Solar&Planetary LtE Now for CMO/ISMO #99 (CMO #473)

Solar & Planetary LtE Now for CMO/ISMO #99 (CMO #473)

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¤·····Subject: Mars 31 July 2018 2016UT RGB and IR.

Received: 1 August 2018 at 16:35 JST

Hi, all

Mars RGB and IR from yesterday evening shortly after closest approach.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180731/CFs31nJuly18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars: July 31, 2018

Received: 1 August 2018 at 11:02 JST

Hi ,

I have attached my my images of Mars July 31, 2018.

Thanks,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180731/FMl31July18.png

Frank J MELILLO (Holtsville, NY)

¤·····Subject: Mars 31 July

Received: 1 August 2018 at 07:37 JST

Please find attached images of Mars on 31 July.

Regards

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180731/BAd31July18.png

Barry ADCOCK (Melbourne, AUSTRALIA)

¤·····Subject: Mars images - July 31

Received: 1 August 2018 at 01:39 JST

Gentlemen,

Mars is at its closest to Earth. Seeing was poor and transparency was poor, but I managed to capture this set before Mars completely disappeared.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180731/PGc31July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Mars 30 July 2018 2046UT RGB and IR.

Received: 31 July 2018 at 18:25 JST

Hi all,

Mars earlier this morning. Conditions were very poor, but I wanted to check what was happening with the latest Solis Lacus storm. It appears to still be active but may be reducing rather than increasing. Other observations required to confirm.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180731/CFs31July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 30 July 2018 2046UT RGB and IR.

Received: 31 July 2018 at 18:25 JST

Hi all,

Mars image set from yesterday evening. Provided conditions are reasonable this evening, this will be one of two sets of images straddling Mars’ closest approach.

S Sabeaus/S Meridiani showing some, albeit slow, return towards normality, but the Margarifiter extension remains affected.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180730/CFs30nJuly18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 2018/07/27-Kumamori

Received: 31 July 2018 at 18:04 JST

Mars images on 27 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180727/Km27July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars 2018/07/26-Kumamori

Received: 31 July 2018 at 15:29 JST

Mars images on 26 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/Km26July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars on 28 July 2018 from Hidetoshi Kudo

Received: 31 July 2018 at 13:00 JST

Dear Minami-sama,

Please find attached my latest Mars images.
I put 3 images in one file. I hope the presentation is acceptable.
If there are any issues please let me know, I can easily fix it.
Kind regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180728/Kd28July18.png

Hidetoshi KUDOH (Cairns, QLD, AUSTRALIA)

¤·····Subject: Mars: July 30, 2018

Received: 31 July 2018 at 11:18 JST

Hi,

I have attached my latest image of Mars July 30th, 2018 at 4:07 UT.

Thanks,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180730/FMl30July18.png

Frank J MELILLO (Holtsville, NY)

¤·····Subject: Mars images - July 30

Received: 31 July 2018 at 09:02 JST

Gentlemen,

Seeing was poor and transparency was poor. I should consider myself lucky that I got as much detail as I did.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180730/PGc30July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Mars images on26 & 29 July

Received: 31 July 2018 at 06:23 JST

Mars images on 26 & 29 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/Ak26July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180729/Ak29July18.png

Tomio AKUTSU (Ibaraki, JAPAN)

¤·····Subject: Mars M180729 ishibashi

Received: 30 July 2018 at 21:22 JST

Mars images on 29 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180729/Is29July18.png

Tutomu ISHIBASHI (Kanagawa, JAPAN)

¤·····Subject: Additional Mars image from Robert Heffner - 07/29 16:16:57 UT

Received: 30 July 2018 at 20:53 JST

Dear CMO
Here is a an additional Mars image from 07/29 16:16:57 UT

Comments:
Here is a second image of three captures derotated in Winjupos

best regards,
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180729/RHf29July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Mars 29 July 2018 2007UT RGB and IR

Received: 30 July 2018 at 20:28 JST

Hi all,

Late evening conditions have not been bad, and enabled me to capture the region that Hubble had imaged on 18 July. Always an exciting exercise to compare.

S Meridiani looks like it is at last slowly recovering.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180729/CFs29July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 2018/07/25-Kumamori

Received: 30 July 2018 at 19:45 JST

Mars images on 25 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180725/Km25July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars image from Robert Heffner - 07/29 16:27:48 UT

Received: 30 July 2018 at 15:33 JST

Dear CMO
Here is a Mars image from 07/29 16:27:48 UT

Comments:
Here is a Mars image from the southern Yaeyama islands in Japan.
Difference of only 10 deg. from my location but a significant improvement
visually in the telescope when observing Mars.
It seems the shape of Hellas has changed from the dust storm

best regards,
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180729/RHf29July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Jupiter 2018.07.17

Received: 30 July 2018 at 13:44 JST

Dears,

Jupiter under not so good conditions, with Io transiting and GRS rising.

RGB: http://astrosurf.com/delcroix/images/planches/j2018-07-17_21-38-12_rgb_md.png

Infrared: http://astrosurf.com/delcroix/images/planches/j2018-07-17_21-33-36_ir685_md.png

In methane absorption band: http://astrosurf.com/delcroix/images/planches/j2018-07-17_22-07-45_ch4_md.png

Steady skies,

Marc DELCROIX (Tournefeuille, FRANCE)

http://astrosurf.com/delcroix

¤·····Subject: Mars 30 July 2018 0056UT RGB and IR. Yet another dust storm in Solis Lacus region

Received: 30 July 2018 at 13:16 JST

Hi all,

RGB and IR image set from early this morning with the new dust outbreak just north of Solis Lacus.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180730/CFs30July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 2018_ 29 July Image_CM 120

Received: 30 July 2018 at 12:14 JST

Seeing little better than 27 July but maybe better image processing.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180729/GWk29July18.png

Gary WALKER (Macon, GA)

¤·····Subject: Mars 30 July 2018 0052UT IR Yet another dust storm in Solis Lacus region

Received: 30 July 2018 at 12:01 JST

Hi all,

A further IR capture of the new dust outbreak north of Solis Lacus. I have seen an image by Conrado Serodio indicating that the storm initiated over 24h ago(but I have not seen it on any images before that as yet)

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180730/CFs30July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 2018/07/24-Kumamori

Received: 30 July 2018 at 11:08 JST

Mars images on 24 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180724/Km24July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars 30 July 2018 0006UT IR Yet another dust storm in Solis Lacus region

Received: 30 July 2018 at 09:38 JST

Hi all,

A quick process from half an hour ago- Looks like a new dust outbreak in the Solis Lacus region.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180730/CFs30July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Jupiter images (May 6th.)

Received: 30 July 2018 at 03:44 JST

Hi all,

Some periods of excellent seeing this night. The GRS and surroundings are nicely on view.

http://www.damianpeach.com/barbados18/2018-05-06-RGBdp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Jupiter images July 25th 2018

Received: 29 July 2018 at 18:18 JST

Hi all,
Some views on the GRS a few days ago. Nice seeing, elevation 25°.

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤·····Subject: Mars. July 28 #2 RGB

Received: 29 July 2018 at 13:03 JST

Hi all, apologies for not including this image in the earlier email.
This is an image of Mars taken this morning using Astrodon RGB filters to give a realistic idea of how it appearances in the eyepiece.

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180728-140818/m20180728-140818utc.png

regards, Anthony

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180728/AWs28July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars Sketch 28 July 2018

Received: 29 July 2018 at 10:26 JST

Hello,

Clouds for the last 9 days have prevented me from observing the Red, Dusty Planet. Finally a break in the weather.

Mars 2018.07.28 0550 UT

35cm SCT f/11 @ 230x

Filters: W25, 23A, 56, 80A, & IL

CM: 145.6 Ls: 219.5 De: -11.0 Dia: 24.3"

Best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180728/MRs28July18.png

Michael ROSOLINA (Friars Hill, WV)

¤·····Subject: Mars images

Received: 29 July 2018 at 09:23 JST

Dear Sirs,
Please find the attached Mars image set from 20-Jul-18.
Best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/MJs20July18.png

Mark JUSTICE (Melbourne, AUSTRALIA)

¤·····Subject: Mars, July 28

Received: 29 July 2018 at 07:54 JST

Hi all, here's an image of Mars from this morning in variable conditions. Once again a 750nm longpass IR filter was used. Hellas Basin is still very bright in the lower part of this image, and some hints of internal structure can be seen. To it's north we see Syrtis Major.

regards, Anthony

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180728-135736/m20180728-135736utc.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180728/AWs28July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Saturn images 22 / 25 July 2018

Received: 28 July 2018 at 20:19 JST

Hi all,
Some recent Saturn images, showing the polar storm, as well as a bright wave in EZ (see animation)

Regards,

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤·····Subject: Mars images 25 and 26 July 2018

Received: 28 July 2018 at 18:51 JST

Hi guys
My two latest sets of Mars images, showing the transient dust cloud in
Solis Lacus.
http://www.astrosurf.com/uploads/monthly_2018_07/M2018_07_25-CPE.png.906d261c3a9902286e8aeca102c06bc4.png

http://www.astrosurf.com/uploads/monthly_2018_07/M2018_07_26-CPE.png.09edcea335f7dcf77592c58f0123dcbb.png

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/CPl26July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180725/CPl25July18.png

Christophe PELLIER (Nantes, FRANCE)

¤·····Subject: Mars 27 July 2018 2115UT RGB and IR

Received: 28 July 2018 at 18:06 JST

Hi all,

Mars at opposition. Things could have been so different, with the high expectations prior to the dust storm, but it has nonetheless been fascinating watching as things unfolded. Even the recent Hubble image seemed somewhat subdued. My respect to those fellow imagers that have conscientiously followed the amazing planetary trilogy over these last months. Even with my unplanned and enforced layoff for a month, I feel like I have run a few marathons. And there's still plenty to do in the coming months......

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180727/CFs27July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars images - July 27

Received: 28 July 2018 at 11:44 JST

Gentlemen,

Seeing was average, at best. There was a moderate jet stream over my location. Transparency was variable with some passing fog. High humidity. Today is opposition.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180727/PGc27July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Mars, July 27

Received: 28 July 2018 at 07:43 JST

Hi all, here's an image of Mars from this morning through a 750nm longpass IR filter. Seeing was not very good, strong jetstream here for most of the session with brief periods of improved seeing. Mars is close to opposition now, in this image we can see a very bright Hellas Basin at lower centre with the dark pattern of Syrtis Major to its north.

Link:

http://www.acquerra.com.au/astro/gallery/mars/20180727-152630/m20180727-152630utc.png

regards, Anthony

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180727/AWs27July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars images 27 July 2018

Received: 28 July 2018 at 06:14 JST

Unfortunately, poor seeing for opposition night.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180727/GWk27July18.png

Gary WALKER (Macon, GA)

¤·····Subject: Mars: July 27, 2018

Received: 28 July 2018 at 02:02 JST

Hi ,

Happy Mars Opposition!

I have attached my latest image of Mars July 27, 2018 between 4:20 UT and 4:43 UT.

Thanks,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180727/FMl27July18.png

Frank J MELILLO (Holtsville, NY)

¤·····Subject: Mars 26 July 2018 2207UT RGB and IR

Received: 27 July 2018 at 16:56 JST

Hi all,

I was pretty much set up for an all-nighter last night, having seen a recent general trend of improved seeing from about 21.00 local time through to midnight. Unfortunately conditions started as very poor at about 21.00 and I only got very slight improvement over the next few hours. I stayed at it until I was able to confirm the reduction of the small storm near Solis Lacus rather than an increase in intensity, and then called it a night. Although it could still be seen, it looked greatly reduced in intensity.

All in all, rather frustrating, but will try again tonight and hopefully enjoy the adjacent lunar eclipse.

At least I got a reasonable IR capture and the limb brightening was again detected, although limited in B.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/CFs26July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 2018 July 24 & 26

Received: 27 July 2018 at 11:02 JST

Seeing was better on the 26th. A condensed bright patch of dust is evident in the middle of Solis Lacus.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180724/DAr24July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/DAr26July18.png

David ARDITTI (Edgware, Middx., the UK)

¤·····Subject: Saturn, storm & satellites 2018.07.18-19 (C14 @ Pic du Midi)

Received: 27 July 2018 at 07:05 JST

Dears,

These Saturn images show pieces of the polar storm (4 on the infrared images). Images do not look so got, but the clouds are resolved.

RGB: http://astrosurf.com/delcroix/images/planches/s2018-07-18_23-49-54_rgb_md.png

Infrared: http://astrosurf.com/delcroix/images/planches/s2018-07-19_00-12-24_r610_md.png

Steady skies,

Marc DELCROIX (Tournefeuille, FRANCE)

http://astrosurf.com/delcroix

¤·····Subject: Mars images (July 26th) - additional.

Received: 27 July 2018 at 06:16 JST

Another image from July 26th.

http://www.damianpeach.com/mars2018/m2018_07_26Adp.jpg

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/DPc26July18.png

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars images (July 26th.)

Received: 27 July 2018 at 05:28 JST

Hi all,

Some images from this morning. Strong jetstream is unfortunately limiting what can be done of late.

A bright new dust cloud is visible over Solis Lacus. A very dark albedo feature has appeared across Phasis-Daedalia which was not present before this storm (though has appeared before following large dust storms.)

http://www.damianpeach.com/mars2018/m2018_07_26dp.jpg

Best Wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180726/DPc26July18.png

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mo July10～14 (L)　2018

Received: 27 July 2018 at 01:38 JST

Mars L images on 10~14 July 2018

Yukio MORITA (Hiroshia, JAPAN)

¤·····Subject: Mars image on 25 July 2018

Received: 26 July 2018 at 22:15 JST

Mars images on 25 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180725/Ak25July18.png

Tomio AKUTSU (Ibaraki, JAPAN)

¤·····Subject: Mars 25 July 2018 2109UT RGB and IR

Received: 26 July 2018 at 18:47 JST

Hi, all

The full image set from yesterday evening.

Other than the small outbreak in the Solis Lacus region, a few other things I note:

a) The limb brightening continues and appears to also have a G component.

b) M Acidalium is showing as very dark

c) The NPH(I hope that is accurate), in the last few days seems to have significantly reduced in brightness, and it appears that some structure may be detected as a dark area in the R image

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180725/CFs25July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 25 July 2018 2113UT IR -new dust storm Solis Lacus/Daedalia region

Received: 26 July 2018 at 15:48 JST

Hi all,

I captured a fair bit of data last night, but with Nick Haigh reporting an outbreak in Daedalia, I did a very quick process of my last capture of the evening and it indeed shows the storm in the Solis Lacus/Daedalia region at upper right. This region has been very active throughout the duration of the main storm.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180725/CFs25July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars July 25

Received: 26 July 2018 at 07:24 JST

Hi Everyone,
Not much of a change on Mars. Sending an IR image for today.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180725/TWl25July18.png

Tim WILSON (Jefferson City, MO)

¤·····Subject: Mars 24 July 2018 1928UT RGB and IR

Received: 25 July 2018 at 21:19 JST

Hi all,

Mars 3 days before opposition. I had suspected some limb softening yesterday, but today there appears to be a significant limb brightening around the planet, most noticeable in the B image. I don’t recall anything similar in 2016- possibly due to the dust ?

S Meridiani starting to be a bit more obvious in visual wavelengths.

I will try and do a bit more work on it, but I did a quick comparison of the IR’s from yesterday and today, specifically looking at the bright regions just south of Meridiani and Margaritifer. My initial conclusion was that there was limited significant changes- possibly pointing to the bright regions being settled on the surface? Comments welcome.

Subtle light cloud can be seen extending off the NP region in the B image

On a lighter note, it almost appears as if the northern section of Margaritifer has detached and moved north during the storm.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180724/CFs24July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 2018/07/19-Kumamori

Received: 25 July 2018 at 17:13 JST

Mars images on 19 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/Km19July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars 24 July

Received: 25 July 2018 at 08:29 JST

Hello,

Attached is a series of images of Mars taken on 24 July at marked wavelengths.

Best Regards

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180724/BAd24July18.png

Barry ADCOCK (Melbourne, AUSTRALIA)

¤·····Subject: Mars July 24

Received: 25 July 2018 at 08:29 JST

Hi Everyone,
Visually Mars appears no different somewhat reminiscent of images of Titan. Vaguely make out the SPC and some dark Southern Markings. Otherwise, here is an IR image from this morning.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180724/TWl24July18.png

Tim WILSON (Jefferson City, MO)

¤·····Subject: Saturn, July 23

Received: 25 July 2018 at 07:12 JST

Hi all, here's an image of Saturn from July 23 using a red filter to enhance the visibility of any storms. Two things of interest are visible - the north polar storm can be seen at top, and also the bright equatorial zone spot just right of centre close to the rings.

regards, Anthony

Link:
http://www.acquerra.com.au/astro/gallery/saturn/20180723-111212/s20180723-111212utc.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Jupiter & Io 2018.07.18 (C14 @ Pic du Midi)

Received: 25 July 2018 at 06:04 JST

Dears,

No miracle here, Jupiter was very low (between 18° and 13°) at acquisition. What surprised me is that founs the 13° image is the best (probably because of the narrow infrared bandwidth for this methane absorption band image).
Oval BA is setting preceded by 3 white features, 3 white ovals visible in the SSTB, the wavy north edge of the NEB is visible, and a curious shape of a feston in EZ.

Methane absorption band: http://astrosurf.com/delcroix/images/planches/j2018-07-18_22-37-24_ch4_md.png

In infrared: http://astrosurf.com/delcroix/images/planches/j2018-07-18_22-08-54_ir685_md.png

RGB: http://astrosurf.com/delcroix/images/planches/j2018-07-18_22-23-18_rgb_md.png

Steady skies;

Marc DELCROIX (Tournefeuille, FRANCE)

http://astrosurf.com/delcroix

¤·····Subject: Saturn image (May 6th.)

Received: 25 July 2018 at 05:32 JST

Hi all,

Here is an image from May 6th. Average seeing. A bright area can be seen in the EZ on the left side.

http://www.damianpeach.com/barbados18/s2018-05-06-0728_1-RGBdp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Jupiter images 8 and 9 July 2018

Received: 25 July 2018 at 05:06 JST

Hi all,
Here are some Jupiter from early July.
Regards

Christophe PELLIER (Nantes, FRANCE)

Planetary astronomy and imaging

¤·····Subject: Mars 18 July and 20 July 2018

Received: 25 July 2018 at 03:29 JST

Dear Masatsugu and Masami,

Attached are some images of Mars taken on July 18th and 20th .

Although I understand the dust storms have now subsided, there still appears to be a lot of dust in Mar’s atmosphere.

Observing visually I had a really tough time making out any of the darker albedo features. Even though Syrtis Major was in good position on these two mornings it only showed as some slight mottling through the eyepiece.

The bright poles and Hellas were visible but that was about the only things that were clearly showing through the eyepiece.

I was glad that on the morning of the 20th I had one my friends, who is a very experienced visual observer, join me and confirm my visual observations.

Best wishes,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/WFl20July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180718/WFl18July18.png

Bill FLANAGAN (Houston, TX)

¤·····Subject: Mars 23 July 2018 2046UT RGB and IR

Received: 24 July 2018 at 21:49 JST

Hi all,

Mars image set from yesterday evening.

The SPC remains complex in IR and R. Argyre at upper centre and Valles Marineris stretches across the centre of the image.

Out of interest, almost the whole session last night was done by remote operation of the observatory from my study. It was all a bit more comfortable than normal!

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180723/CFs23July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars image from 07/23/2018 15:35:51 UT

Received: 24 July 2018 at 19:44 JST

Dear CMO,
Here is a Mars image from 07/23/2018 15:35:51 UT

Comments:
Not the greatest conditions but can see what is going on this side of Mars in the image.
The dark hole in the SPC on the far side is prominent, and the SPC area adjacent to Hellas seems still covered in dust.

best regards,
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180723/RHf23July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Mars, July 23

Received: 24 July 2018 at 08:39 JST

Hi all, here's an IR image of Mars from this morning. There was a short period of reasonable seeing when this data was captured, 3 runs derotated and merged in WinJupos.

Hellas Basin at lower right is extremely bright in IR, due to dust I guess.

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180723-142642/m20180723-142642utc.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180723/AWs23July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars images - July 21

Received: 24 July 2018 at 02:04 JST

Gentlemen,

Above average seeing for these images. Transparency started good but then quickly turned to poor (passing thin clouds), making for a short session.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/PGc21July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Mars

Received: 24 July 2018 at 01:24 JST

Hi to All!, Here is my session from the 22nd of july under poor conditions.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180722/EMr22July18.png

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤·····Subject: Mars images July 23 2018

Received: 24 July 2018 at 00:54 JST

Hi all, some excellent seeing last night despite elevation of 18 to 16° only. While the storms are clearly over now, the constrast in visible wavelengths remains weak, and visually, I did not see any difference from the past weeks. Only the new dark Daedalia/Araxas marking could be glimpsed.

I have added images taken with narrow B bandpass filters in order to try to detect auroras. None is seen here certainly but the filters prove very effective for subtle white clouds detection especially the 425.

Regards

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180723/CPl23July18.png

Christophe PELLIER (Nantes, FRANCE)

¤·····Subject: Mars

Received: 23 July 2018 at 23:22 JST

Hi to All!, Hers are my latest sessions of Mars.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/EMr20July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/EMr19July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180718/EMr18July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180717/EMr17July18.png

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤·····Subject: Mars 20th July 2018 UT RGB

Received: 23 July 2018 at 22:29 JST

Hello all

Attached are some images of Mars taken on the 20th July 2018 UT in good seeing.

Best wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/MVl20July18.png

Maurice VALIMBERTI (Melbourne, AUSTRALIA)

¤·····Subject: Mars image from 07/22/2018 16:12:10 UT

Received: 23 July 2018 at 17:55 JST

Dear CMO,
Here is a Mars image from 07/22/2018 16:12:10 UT

Comments:
Passing clouds again for the 4th straight imaging session, will keep at it for the capture and processing practice and hope for better conditions soon.

best regards,
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180722/RHf22July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Saturn, July 22

Received: 23 July 2018 at 15:21 JST

Hi all, here's an image of Saturn from last night showing the north
polar storm. A red filter was used to increase the visibility.

cheers, Anthony

Link:
http://www.acquerra.com.au/astro/gallery/saturn/20180722-121006/s20180722-121006utc.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars 22 July 2018 2005UT IR

Received: 23 July 2018 at 14:29 JST

Hi, all

Didn’t have much time last night, so a quick monitoring IR only under rather poor conditions and quite heavily processed.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180722/CFs22July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars July 22

Received: 23 July 2018 at 09:45 JST

Hi Everyone,
Seeing was decent last night. The lifesaver effect is very obvious in the SPC.
Visually not much to see yet. Though the IR is getting though the dust.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180722/TWl22July18.png

Tim WILSON (Jefferson City, MO)

¤·····Subject: Mars, July 22

Received: 23 July 2018 at 09:40 JST

Hi all, some good seeing on Mars at times this morning, once again only the IR filter shows much detail apart from the poles. Here's an image using a 750nm longpass IR filter combining data captured over a 20 minute period. Hellas basin is the bright dust-filled circular feature at lower right, with a distinct halo of dust outside as well. Syrtis Major is faintly visible to it's north.

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180722-143948/m20180722-143948utc.png
regards, Anthony

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180722/AWs22July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars images - July 19

Received: 23 July 2018 at 06:23 JST

Gentlemen,

Here's a set of images from July 19. The seeing was below average and the transparency was good.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/PGc19July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Mars images (May 6th.)

Received: 23 July 2018 at 05:21 JST

Hi all,

Here are some pre-storm images from May 6th. Very good seeing. Syrtis Major/Mare Cimmerium are well seen.

http://www.damianpeach.com/barbados18/m2018_05_06dp.jpg

Best Wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180506/DPc06May18.png

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars 21 July 2018 1947UT RGB and IR

Received: 23 July 2018 at 01:21 JST

Hi all,

Mars image set from yesterday evening.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/CFs21July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars images (July 21st.)

Received: 23 July 2018 at 00:29 JST

Hi all,

Here is an image from yesterday. Poor seeing but some features are starting to become visible again (although contrast is still very washed out.)

http://www.damianpeach.com/mars2018/m2018_07_21dp.jpg

Best Wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/DPc21July18.png

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars images on 21 July

Received: 22 July 2018 at 23:22 JST

Mars images on 21 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/Ak21July18.png

Tomio AKUTSU (Ibaraki, JAPAN)

¤·····Subject: Mars image 20180720

Received: 22 July 2018 at 21:21 JST

Hello everyone,

Please find attached a Mars image captured in very ordinary seeing.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/SBd20July18.png

Stefan BUDA (Melbourne, AUSTRALIA)

¤·····Subject: Mars 2018/07/16-Kumamori

Received: 22 July 2018 at 19:28 JST

Mars images on 16 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180716/Km16July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars 20th July UT IR images

Received: 22 July 2018 at 17:51 JST

Hello all,

Attached are some IR images of Mars taken on the 20th July 2018 UT in good seeing conditions.
Some RGB data to follow for the same session soon.
Starting to look like a familiar Mars again....

Best Wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/MVl20July18.png

Maurice VALIMBERTI (Melbourne, AUSTRALIA)

¤·····Subject: Mars image from 07/21/2018 15:23:35 UT

Received: 22 July 2018 at 15:34 JST

Dear CMO,
Here is a Mars image from 07/21/2018 15:23:35 UT

Comments:
The major Martian features are mostly all able to be imaged now but still have a "washed out" or hazy look to them from the remnants of the dust storm.
Jagged irregularities becoming more prominent in the SPC as it recedes with the changing Martian seasons.

best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/RHf21July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Mars images - July 20

Received: 22 July 2018 at 12:52 JST

Gentlemen,

Seeing started very good, then turned excellent. It was so good that Gomer Sinus was clearly visible in the live IR capture video. Transparency was also very good. These were probably the best conditions I had this season!

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/PGc20July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Mars: July 21, 2018

Received: 22 July 2018 at 11:12 JST

Hi ,

I have attached my image of Mars July 21, 2018 at 4:37 UT.

Thanks,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/FMl21July18.png

Frank J MELILLO (Holtsville, NY)

¤·····Subject: Mars images on 20 July

Received: 22 July 2018 at 10:33 JST

Mars images on 20 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/Ak20July18.png

Tomio AKUTSU (Ibaraki, JAPAN)

¤·····Subject: Mars, July 21

Received: 22 July 2018 at 10:26 JST

Hi all, here's an image of Mars from this morning through a 750nm longpass filter. Seeing was variable, this image was made by merging data captured over 15 minutes in WinJupos. Hellas Basin can be seen at lower right, very bright with a diffuse outer halo presumably of dust still very active in that area.

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180721-155042/m20180721-155042utc.png

regards, Anthony

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180721/AWs21July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars spectro-photometry - July 16th 2018

Received: 22 July 2018 at 00:16 JST

Hi all,
After weeks of work, here are some first results using a Star Analyser 100 on Mars. The idea is not to identify chemical elements, as we do in spectroscopy usually, but to produce a color photometry work on planets using this low res spectrograph, in order to detect if possible color changes on planets.

This month was a superb occasion to test the idea on the martian global dust storm. As expected, the result show a very red spectrum, with almost no blue recorded. I hope to detect changes when the atmosphere will be completely clear in 2/3 months.

But right now, a notable difference can be recorded when focusing on the south polar cap. Although affected as well by the dust, the cap remains less red than the rest of the disk. Let's see how the spectrum will change when it clear as well from dust.

The data has been corrected both for instrument response and atmospheric extinction using nearby solar-like star Omega Sagittari (G5IV)

Best regards,

Christophe PELLIER (Nantes, FRANCE)

¤·····Subject: Mars 2018.07.19 (C14 @ Pic du Midi)

Received: 21 July 2018 at 21:55 JST

Dears,

Images taken at Pic du Midi (acquisition by Emil Kraaikamp, I ama sure he will process later the data better than this) with a C14 (probably with a non optimal optical setup) at a mere 21° elevation.
Mars with its relief rather well visible now, Mare Cimmerum and Sirenum at meridian, Olympus Mons and the three Tharsis volcanoes setting. South polar cap is still covered partially by dust. Here are the infrared and RGB images:

Infrared:

http://astrosurf.com/delcroix/images/planches/m2018-07-19_01-41-48_ir685_md.png

http://astrosurf.com/delcroix/images/planches/m2018-07-19_01-41-48_ir685-anim_md.gif

RGB:

http://astrosurf.com/delcroix/images/planches/m2018-07-19_01-33-06_rgb_md.png

http://astrosurf.com/delcroix/images/planches/m2018-07-19_01-33-06_rgb-anim_md.gif

Mix between IR and RGB: http://astrosurf.com/delcroix/images/planches/m2018-07-19_01-41-48_irrgb_md.png

Way more to come later ...

Steady skies

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/MDc19July18.png

Marc DELCROIX (Tournefeuille, FRANCE)

http://astrosurf.com/delcroix

¤·····Subject: Mars images, July 16th 2018

Received: 21 July 2018 at 19:28 JST

Hi all,
My latest images from a few days ago. The storms are clearly subsiding
in IR, even if opacity is still strong in RGB.

Regards
http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180716/CPl16July18.png

Christophe PELLIER (Nantes, FRANCE)

¤·····Subject: Mars 2018/07/15-Kumamori

Received: 21 July 2018 at 19:25 JST

Mars images on 15 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180715/Km15July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars 20 July 2018 1956UT RGB and IR

Received: 21 July 2018 at 18:29 JST

HI all,

Mars image set from last night, looking down onto Valles Marineris. I believe we are definitely starting to see some familiar details reappearing in some areas in the recent RGB images.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/CFs20nJuly18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars images on 19 July

Received: 21 July 2018 at 17:33 JST

Mars images on 19 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/Ak19July18.png

Tomio AKUTSU (Ibaraki, JAPAN)

¤·····Subject: Mars: July 20, 2018

Received: 21 July 2018 at 10:49 JST

Hi ,

I have attached my latest image of Mars July 20, 2018 from 4:40 UT to 4:57 UT.

Thanks,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/FMl20July18.png

Frank J MELILLO (Holtsville, NY)

¤·····Subject: Mars image from 07/18/2018

Received: 21 July 2018 at 10:42 JST

Dear CMO
Here is a Mars image from 07/18/2018 15:59:54 UT

Some nearby heavy air conditioning plumes (hot summer here now!) made the capture session "interesting" and I will try to get a better image of this side this week..

best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180718/RHf18July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Mars on 19 July 2018 from Hidetoshi Kudo

Received: 21 July 2018 at 08:30 JST

Dear Minami-sama,

Please find attached my latest Mars image.
In tropical Cairns, some farmers burn cane field before harvesting.
Despite the poor clearance of the sky, I had some good results.

Kind regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/Kd19July18.png

Hidetoshi KUDOH (Cairns, QLD, AUSTRALIA)

¤·····Subject: Jupiter images (May 5th.)

Received: 21 July 2018 at 06:58 JST

Hi all,

Good seeing for this session on May 5th. Several good images were obtained.

http://www.damianpeach.com/barbados18/2018-05-05-RGB01dp.jpg

http://www.damianpeach.com/barbados18/2018-05-05-RGB02dp.jpg

http://www.damianpeach.com/barbados18/2018-05-05-RGB03dp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars images (July 13th.)

Received: 21 July 2018 at 03:43 JST

Hi all,

Here are images from July 13th.

http://www.damianpeach.com/mars2018/m2018_07_13dp.jpg

Best Wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180713/DPc13July18.png

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars 19 July 2018 2014UT IR

Received: 20 July 2018 at 17:30 JST

Hi all,

The best I could get out of Jetstream and poor seeing conditions last night. RGB data was too poor.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/CFs19July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 20 July 2018 0222UT IR

Received: 20 July 2018 at 15:17 JST

Hi, all

Up early this morning, but met by terrible seeing, and rather cool, 1 deg, weather.

Despite the low resolution, I am circulating, as this view shows the dark “hole” in the SPC quite nicely.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180720/CFs20July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars, July 19

Received: 20 July 2018 at 09:41 JST

Here's an IR image of Mars from this morning in reasonable seeing.
Valles Marineris is the bright horizontal feature rising at left, South polar region at bottom.

The visible features appear pretty much identical to yesterdays image in the same IR channel.

The seeing today was perhaps slightly worse.

regards, Anthony

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180719-162748/m20180719-162748utc.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/AWs19July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars 14 July

Received: 20 July 2018 at 07:34 JST

Hello,

Attached is a set of images of Mars taken on 14 July.

The telescope is a 245mm apochromatic refractor and the camera is an
ASI224MC.

The filters are band pass filters with a FWHM of 40nm. The 889nm filter is a methane bandpass filter 8nm wide.

The images were taken from Melbourne Australia.

Regards

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180714/BAd14July18.png

Barry ADCOCK (Melbourne, AUSTRALIA)

¤·····Subject: Mars 2018 July 15 & 19

Received: 20 July 2018 at 05:37 JST

I am using an 805nm filter now on Mars, a slightly longer wavelength than I was using before.

On the 15th, the central meridian corresponds to a dark patch known as Laestrygonium Sinus. In the north are the light-coloured plains of Elysium and Amazonis.

On the 19th, Mare Sirenum is the dark area in the middle south, but the area now doesn’t look like it does on maps at all. Olympus Mons in the N looks dark.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180715/DAr15July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180719/DAr19July18.png

David ARDITTI (Edgware, Middx., the UK)

¤·····Subject: Re: Mars 17 July 2018 2102UT RGB and IR

Received: 20 July 2018 at 03:21 JST

Thanks for this, Clyde.

I agree that there are some active, dense, dust cores that are shown in your image.

Since the seasonal SPC should regress more rapidly than usual if the sublimation rate is increased, the way to find out whether the sublimation rate is increased is to observe the regression of the edge of the SPC. Although the warming of the atmosphere by the dust's absorption of sunlight gives us a reason to think the sublimation rate might be increased, it could also be asserted that the dust covering the cap decreased insolation so that the ground is colder and the sublimation rate should be decreased!

Note that the NPH is prominent. I interpret this to mean that it's at a higher altitude than the mixing layer -- i.e., stratospheric -- as the mixing layer is warmed by dust. Maybe I'm wrong about that.

Roger VENABLE ( Chester, GA )

¤·····Subject: Mars 18 July 2018 2059UT RGB and IR

Received: 20 July 2018 at 02:42 JST

Hi all,

Mars on 18 July, looking down on the Tharsis, Solis Lacus and Valles Marineris regions.

To me, it looks like we are seeing more detail starting to show in the RGB images.

The NP region is incredibly bright and difficult to process.

Quite a lot of structure can be seen on the SPC.

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180718/CFs18July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars 17 July 2018 2102UT RGB and IR

Received: 20 July 2018 at 01:17 JST

Hi all,

Trying to catch up on a bit of backlog.

Mars image set from 17th July, centred on Tharsis. It still looks to me that there are active dust regions.

I am not sure whether I am correct or not, but I have noticed that active dust storms seem to show, at least to some extent, in the G channel.

I note that the brilliant blue cloud extending off the SPC on the sunlit limb that has been with us for quite a while is now nearly gone. Does this indicate a reduction in the sublimation rate?

Best regards, Clyde

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180717/CFs17July18.png

Clyde FOSTER (Centurion, SOUTH AFRICA)

¤·····Subject: Mars M180717 ishibashi

Received: 19 July 2018 at 13:15 JST

Mars images on 17 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180717/Is17July18.png

Tutomu ISHIBASHI (Kanagawa, JAPAN)

¤·····Subject: Mars images

Received: 19 July 2018 at 12:08 JST

Dear Sirs,
I have added three further images sets to my single set from the 1^st July 2018.
Please find attached the set of four images that includes my original single set from 14:13UT.
Best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180701/MJs01July18.png

Mark JUSTICE (Melbourne, AUSTRALIA)

¤·····Subject: Mars, July 18

Received: 19 July 2018 at 08:57 JST

Hi all, some reasonable seeing for a short while this morning. Here's an image of Mars through a 750nm longpass filter showing increasing amounts of surface detail as compared to recent weeks so we might hope that the dust is slowly settling.

cheers, Anthony

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180718-161412/m20180718-161412utc.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180718/AWs18July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars 18 July

Received: 19 July 2018 at 07:37 JST

Hello,

Attached is a set of images of Mars taken on 18 July.

The telescope is a 245mm apochromatic refractor and the camera is an ASI224MC.

The filters are band pass filters with a FWHM of 40nm.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180718/BAd18July18.png

Barry ADCOCK (Melbourne, AUSTRALIA)

¤·····Subject: Saturn good seeing (July 13th.)

Received: 19 July 2018 at 04:07 JST

Hi all,

Not quite as good as on the 14th but still a very pleasing result. Little visible across this hemisphere.

http://www.damianpeach.com/sat18/s2018-07-13-0256_0-RGBdp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars images on 16 July

Received: 18 July 2018 at 22:58 JST

Mars images on 16 July 2018.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180716/Ak16July18.png

Tomio AKUTSU (Ibaraki, JAPAN)

¤·····Subject: Second Mars image from 07/16/2018 (16:46 UT)

Received: 18 July 2018 at 12:24 JST

Dear CMO
Here is a second Mars image from 07/16/2018, this one from 16:46 UT
These low altitude captures take more time to process than when Mars is higher, will try to send all images at once next time where possible.
best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180716/RHf16July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Mars July 17

Received: 18 July 2018 at 07:37 JST

Hi Everyone,
Well with Sytris Major and Hellas on the CM I was expecting to　see some detail but visually the planet looked like the dust
had not settled out much at all.. Hellas was a little bit brighter and　SM was still very very vague visually. So here is todays
images sorry no Blue image had trouble with the avi during　processing.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180717/TWl17July18.png

Tim WILSON (Jefferson City, MO)

¤·····Subject: Saturn excellent seeing (July 14th.)

Received: 18 July 2018 at 05:03 JST

Hi all,

We had not intended to observe this night but soon after sunset i noticed the DIMM at the nearby Gemini South Observatory (20km to the NNE) was reading 0.38" seeing - the lowest value i had seen it all year! We quickly opened and took some data, and i am very glad we did as it resulted in our best Saturn imagery this apparition.

The polar storm was not visible but a few other features are visible on the disk, including the EZ bright spot. The Encke division can be seen around the entire ring system.

http://www.damianpeach.com/sat18/s2018-07-14-0134_6-RGBdp.jpg

You really do need very steady seeing conditions for these big apertures to really start performing!

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars

Received: 18 July 2018 at 00:37 JST

Hi to All!, Hers are my latest sessions of Mars.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180715/EMr15July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180713/EMr13July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180712/EMr12July18.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180711/EMr11July18.png

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤·····Subject: Mars image from 07/16/2018 16:18 UT

Received: 17 July 2018 at 17:27 JST

Dear CMO
Here is a Mars image from 07/16/2018 16:18 UT
This was a frustrating session as every time the seeing turned towards excellent strong gust of winds and passing clouds would roll in.
Had to use higher gain setting than I like to usually use.
This side of Mars still looks very dust ridden overall.

best regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180716/RHf16July18.png

Robert HEFFNER (Osaka, JAPAN)

¤·····Subject: Mars 2018/07/14-Kumamori

Received: 17 July 2018 at 14:04 JST

Mars images on 14 July 2018 in Okinawa.

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180714/Km14July18.png

Teruaki KUMAMORI (Osaka, JAPAN)

¤·····Subject: Mars dust comparison video July 16

Received: 17 July 2018 at 12:49 JST

Time for another video showing how Mars looks now compared to a dust-free view:

http://www.acquerra.com.au/astro/gallery/mars/20180716-164412/mars-20180716-IR750.mp4

regards,

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Mars, July 16 IR750

Received: 17 July 2018 at 11:59 JST

Hi all, some slightly better seeing this morning on Mars with the IR750 longpass filter showing more detail than before. Maybe some of the obscuration is clearing away?

Valles Marineris is prominent at centre with the South Pole at bottom showing some isolated brighter regions. The three Tharsis volcanoes are faintly visible rising at left.

Link:
http://www.acquerra.com.au/astro/gallery/mars/20180716-164412/m20180716-164412utc.png

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180716/AWs16July18.png

Anthony WESLEY (NSW, AUSTRALIA)

¤·····Subject: Saturn occults a star (July 12th.)

Received: 17 July 2018 at 04:00 JST

Hi all,

Here is an image on July 12th. Poor seeing but a reasonably bright star passed through the ring system and behind the planet (i had no idea this was happening at the time.)

http://www.damianpeach.com/sat18/s2018-07-12-0219_8-RGBdp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mars images - July 16

Received: 17 July 2018 at 01:15 JST

Gentlemen,

I had good seeing last night. Transparency was fair for this set of images but quickly deteriorated thereafter.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180714/PGc14July18.png

Peter GORCZYNSKI (Oxford, CT)

¤·····Subject: Re: Mars 14 July 2018 2106UT RGB and IR

Received: 16 July 2018 at 22:01 JST

We usually think of these global dust storms as being started by the cold winds rushing northward from the SPC, as the exposure of the southern latitudes to sunlight warms the ground in southern spring. The updrafts created by the warmth of the ground enhances the outrush of the SPC winds. Even though this one began in the Northern Hemisphere, it is possible that the winds from the SPC in the usual spring fashion were what magnified the storm so greatly.

I think that it is now a global dust storm, and I think that the usual classification of these events dictates that the only previous global storm on record was that of 1971. I agree with you, Jim, that the poles may be the last areas to be covered in a global storm, although the 1971 development was not well observed, so we don't have anything to compare to the development of the present one. However, I think that, in most planet-encircling storms, the poles were the main areas not covered.

The dust in the atmosphere warms it, as you are pointing out. This effect is greatest in the upper levels of the mixing layer (i.e., troposphere), because the high altitude dust attentuates the insolation to levels below it. As you know, the normal situation in the troposphere is a decrease in temperature with increased altitude. The dust storm reverses that gradient -- a situation called a temperature inversion. Winds are suppressed by the temperature inversion, as the air is very stable. This results in disappearance of dense dust cores, and the dusty haze gradually settles to the ground.

I think that Clyde's July 15th image shows separate dense dust cores over Thaumasia Felix, Aonius Sinus, Sirenum, Phaethontis, and Electris. These dust clouds include powerful updrafts that supply the upper levels of the mixing layer with more dust. Though it has been suggested that some areas are now clearing a bit, it's not clear to me (pun intended.) When the last of the dense cores have disappeared, then I'll expect gradual, global clearing.

That will be 2 cents, please.

Roger VENABLE ( Chester, GA )

¤·····Subject: Saturn images (July 10th.)

Received: 16 July 2018 at 06:23 JST

Hi all,

Here is an image from July 10th. The polar storm is clearly seen.

http://www.damianpeach.com/sat18/s2018-07-10-0431_4-RGBdp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Re: Mars 14 July 2018 2106UT RGB and IR

Received: 16 July 2018 at 05:28 JST

Hi Clyde,

As your images show, the dust cloud activity has expanded to almost cover the entire SPC. My lower resolution image displayed at Mars on July 14, 2018 SPC Dust covered shows the same. I think the poles are the last to succumb to a planet-wide dust storm. They are the coldest regions on Mars. Dust storm expansion requires the temperature of a dust cloud to increase. Apparently the temperature of dust clouds near the South polar region has increased sufficiently to overcome the cold temperature sink of the SPC. Notice also, the NPH is tan shaded now. If dust clouds cover both poles as well as the rest of the planet, then we have a global dust storm versus a planet-wide storm. In the completely dust covered Tharsus region, there is no area to expand to so the temperature of the region may go up without any expansion. I would like here what other people think about the process. Thanks.

Jim MELKA (Chesterfield, MO)

¤·····Subject: Mars images (July 10th.)

Received: 16 July 2018 at 04:01 JST

Hi all,

Here is an image from July 10th. Various vague markings can be seen. The Oxus dark patch is clearly visible in the north.

http://www.damianpeach.com/mars2018/m2018_07_10dp.jpg

Best Wishes

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180710/DPc10July18.png

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Jupiter images (July 10th.)

Received: 16 July 2018 at 01:30 JST

Hi all,

Here is a quick image from July 10th. GRS centre with bright material surrounding. The equatorial zone is looking very dusky and yellow/orange coloured.

http://www.damianpeach.com/jup18/2018-07-10-0242_5-RGBdp.jpg

Best Wishes

Damian PEACH (Selsey, WS, the UK)

Web: http://www.damianpeach.com/

¤·····Subject: Mercury 12-07-2018 742nm IR

Received: 16 July 2018 at 01:00 JST

Hi All,

Mercury again...the apparent size has increased a little (around 8 arcsec) and the phase noticeably narrower as he swings in towards us, starting to close in on the sun. Good but not great conditions for this shot.

All the best

Simon KIDD (Cottered,Herts,the UK)

¤·····Subject: Mars images - July 14

Received: 16 July 2018 at 00:21 JST

Gentlemen,

Seeing was about average and transparency was below average for this set of images.

Regards,

http://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2018/180714/PGc14July18.png

Peter GORCZYNSKI (Oxford, CT)

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