Solar&Planetary LtE Now for CMO/ISMO in April 2023

Solar & Planetary LtE Now in April 2023

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LtE in March 2023

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¤••••• Subject: Venus 2023 April 29

Received: 2 May 2023 at 10:11 JST

Here are some images of Venus approaching dichotomy.

As the contrasts are always very slight in IR, R and B, these images sharpened to the level where the bright limb is burned out. It is seen that the detail in R is similar to that in IR, and in B similar to UV.

As the UV image is always very blurred with my system, I thought I would concentrate on the others, and make an experimental RGB false-colour composite using IR, R and B respectively. The IR/R-bright areas look yellow in this.

Yours,

David ARDITTI (Edgware, Middx., the UK)

¤••••• Subject: Venus 2023-04-28

Received: 29 April 2023 at 17:39 JST

Venus images on 28 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Re:New spectra of Venus - 2023/04/17

Received: 29 April 2023 at 17:06 JST

Very interesting! I have been doing observations at IR and UV wavelengths so this will help me sort out which filters might be best.

-Rik

Richard HILL (Tucson. AZ)

¤••••• Subject: New spectra of Venus - 2023/04/17

Received: 29 April 2023 at 15:04 JST

Hi all,
In 2020 I had used the crescent phase of the planet as a pseudo-slit to get some first spectra of the planet with the Star Analyzer. But now I made them with the Alpy600 and the results are much more resolved.

The conclusions remained the same however. The UV absorber is well detected in UV, but is identified as active as well in the deep blue part of the spectrum, in coherence with details obtained with such filters as the W47.

Although I did observed a solar-like star to correct the spectra (Lambda Aurigae), I have prefered to make profit of the solar spectrum contained inside the blue sky spectrum, which has been observed just before Venus at the same airmass. This allowed me, for pedagogical purposes, to correct the profile up to 360 nm, when the Alpy600 becomes completely blind.

Best regards,

Christophe PELLIER (Nantes, FRANCE)

¤••••• Subject: Venus 2023-04-27

Received: 29 April 2023 at 01:21 JST

Venus images on 27 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars M230427 ishibashi

Received: 28 April 2023 at 09:10 JST

Mars Image on 27 April 2023

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230427/Is27Apr23.png

Best regards,

Tsutomu ISHIBASHI (Kanagawa, JAPAN)

¤••••• Subject: Mars Sketch 26 April 2023

Received: 27 April 2023 at 11:17 JST

Hello,

I have attached my recent sketch.

-------------------------------------------

2023/04/26 0125 UT

CM: 332.4 Ls: 56 De: 8.5 Dia: 5.5"

35cm SCT f/11 @ 488x Filters: W23A, 80A, 11, 21, and IL

S: 7-8/10 P T: 4/6

-------------------------------------------

Thank you,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230426/MRs26Apr23.png

Michael ROSOLINA (Friars Hill, WV)

¤••••• Subject: Mars: April 25, 2023

Received: 26 April 2023 at 09:54 JST

Hi,

I have attached my image of Mars April 25, 2023 at 00:58 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230425/FMl25Apr23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars - April 22nd

Received: 25 April 2023 at 02:39 JST

Hi To All!,

Here are my latest sessions of Mars and Venus.

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230422/EMr22Apr23.png

Venus images on 22 Aprril 2023.

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤••••• Subject: Saturn 2023-04-23

Received: 24 April 2023 at 23:57 JST

Saturn images on 23 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars 2023/03/22 & 26 & 29

Received: 23 April 2023 at 19:14 JST

Hello, here are some delayed obs from late March :

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230322/MKd22Mar23.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230326/MKd26Mar23.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230329/MKd29Mar23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Mars 2023/04/20

Received: 23 April 2023 at 03:53 JST

Hello, here is my latest obs of tiny Mars :

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230420/MKd20Apr23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Saturn 2023-04-18

Received: 22 April 2023 at 12:50 JST

Saturn image on 18 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars: April 21, 2023

Received: 22 April 2023 at 10:44 JST

Hi,

I have attached my image of Mars April 21, 2023 at 00:11 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230421/FMl21Apr23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars Sketch 20 April 2023

Received: 21 April 2023 at 17:36 JST

Hello,

With Mars so small now, the main reason I was able to make this observation was due to the very good seeing.

I did not see any bright areas using the red (23A) filter, so I don't think there is much dust currently. I did see bright clouds on the p. limb in integrated light (IL) and blue light, which would indicate atmospheric clouds (water ice or CO2 ice). There was also a bright patch over Solis Lacus/Ganges on the f. limb which I found very interesting.

Mare Erythraeum to the south and Mare Acidalium to the north were both fairly dark--Meridiani not so much. The NPC was narrow and bright with a dark collar. There was also a bright spot in the south polar region.

--------------------------------------------------------------

2023/04/20 0210 UT

CM: 41 Ls: 53 De: 7.1 Dia: 5.7"

35cm SCT f/11 @ 326x Filters: W23A and IL

S: 8/10 P T: 5/6

--------------------------------------------------------------

Thank you,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230420/MRs20Apr23.png

Michael ROSOLINA (Friars Hill, WV)

¤••••• Subject: Mars 2022-11-15，2022-12-11，2022-12-12

Received: 21 April 2023 at 16:35 JST

Mars images in November and December 2022.

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/221115/Ak15Nov22.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/221211/Ak11Dec22.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/221212/Ak12Dec22.png

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Patial Solar Eclipse

Received: 21 April 2023 at 12:45 JST

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars: April 20, 2023

Received: 21 April 2023 at 11:03 JST

Hi,

I have attached my Mars image April 20, 2023 at 00:46 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230420/FMl20Apr23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars 2023/04/14 & 15 & 18

Received: 20 April 2023 at 05:16 JST

Hello, here are my latest obs of tiny Mars :

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230414/MKd14Apr23.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230415/MKd15Apr23.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230418/MKd18Apr23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Venus 23-04-14

Received: 16 April 2023 at 10:15 JST

Venus images on 14 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars 2023/04/11 & 12 & 13

Received: 15 April 2023 at 16:07 JST

Hello, here is a set of tiny Mars in poor daylight conditions:

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230411/MKd11Apr23.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230412/MKd12Apr23.png

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230411/MKd11Apr23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Mars: April 14, 2023

Received: 15 April 2023 at 10:31 JST

Hi,

I have attached my Mars image April 14, 2023 at 00:33 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230414/FMl14Apr23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars image 2023/02/06

Received: 14 April 2023 at 13:02 JST

Dear Mr. Murakami,

This is a RGB color image of Mars from 06-Feb-2023, under average seeing:

»»»»»»»»»»»»»»»»»»»»

Mars

2023/02/06 (UT) 00:30:25

CM= 351.1°

SCT LX200UHTC 0.25m + Barlow 2x + ASI290MM + RGB Filters @ 0.09”/pixel (f/27)

RGB: 5382/4044/4333 frames @ 218/217/153 fps @ 180sec

S: 3/10 – T: 3/5 – Alt: 71°

»»»»»»»»»»»»»»»»»»»»

Best regards,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230206/CTr06Feb23.png

Charles TRIANA (Bogotá, COLOMBIA)

AstroExplor Observatory

www.astroexplor.org

¤••••• Subject: Saturn 2023-04-12

Received: 13 April 2023 at 14:40 JST

Saturn images on 12 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars - April 10th

Received: 13 April 2023 at 05:49 JST

Hi To All!,

Here are my latest sessions

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230410/EMr10Apr23.png

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤••••• Subject: Mars: April 11, 2023

Received: 12 April 2023 at 09:51 JST

Hi,

I have attached my Mars images April 11, 2023 at 00:18 UT and 00:47 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230411/FMl11Apr23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars image 2023/01/24

Received: 10 April 2023 at 20:42 JST

Dear Mr. Murakami,

This is a LRGB color image of Mars from 24-Jan-2023, under average seeing:

»»»»»»»»»»»»»»»»»»»»

Mars

2023/01/24 (UT) 03:43:06

CM= 159.0°

SCT LX200UHTC 0.25m + Barlow 2x + ASI290MM + LRGB Filters @ 0.09”/pixel (f/27)

LRGB: 7343/6691/5120/2398 frames @ 218/218/218/153 fps @ 240sec

S: 4/10 – T: 3/5 – Alt: 48°

»»»»»»»»»»»»»»»»»»»»

Best regards,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230124/CTr24Jan23.png

Charles TRIANA (Bogotá, COLOMBIA)

AstroExplor Observatory

www.astroexplor.org

¤••••• Subject: Mars M230409 ishibashi

Received: 9 April 2023 at 22:55 JST

Mars Images on 9 April 2023

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230409/Is09Apr23.png

Best regards,

Tsutomu ISHIBASHI (Kanagawa, JAPAN)

¤••••• Subject: Mars image 2023/01/23

Received: 9 April 2023 at 21:15 JST

Dear Mr. Murakami,

This is a LRGB color image of Mars from 23-Jan-2023, under average seeing:

»»»»»»»»»»»»»»»»»»»»

Mars

2023/01/23 (UT) 03:16:18

CM= 161.7°

SCT LX200UHTC 0.25m + Barlow 2x + ASI290MM + LRGB Filters @ 0.09”/pixel (f/27)

LRGB: 4987/7218/8007/2951 frames @ 218/218/218/153 fps @ 240sec

S: 3/10 – T: 3/5 – Alt: 55°

»»»»»»»»»»»»»»»»»»»»

Best regards,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230123/CTr23Jan23.png

Charles TRIANA (Bogotá, COLOMBIA)

AstroExplor Observatory

www.astroexplor.org

¤••••• Subject: Mars 2023/04/08

Received: 9 April 2023 at 18:04 JST

Hello, here is a set of tiny Mars in poor conditions and thin clouds:

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230408/MKd08Apr23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Mars 2023/04/05

Received: 8 April 2023 at 18:28 JST

Hello, here is a set of Mars in poor conditions

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230405/MKd05Apr23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Saturn 2023-04-07

Received: 8 April 2023 at 14:29 JST

Saturn images on 7 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Re: Mars 2023/04/07

Received: 8 April 2023 at 12:17 JST

Manos --
It sounds as though you may have preserved enough channel data for me to analyze. I am planning on analyzing all of Greg Shanos's images later this year, and if you have a good number of them, they might contribute significantly to the study. I'd be pleased to see receive all of them.

You may have noticed the message that I sent to the marsobservers list just now. I emphasized the need to process images the same way every time in order that they may be analyzed, and preferably there should be little or no wavelet use or other contrast enhancements. Often such unprocessed images are not kept, but if you have them, they are the ones that I want.

Thanks for considering this.

Roger VENABLE (Chester, GA )

¤••••• Subject: Mars 2023/04/07

Received: 8 April 2023 at 05:03 JST

Hello, here are two rgb sets of Mars during daylight today.

Channels pesented separated for inspection of the possible blue clearing:

Manos
PS I have many to process from previous months...

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230407/MKd07Apr23.png

Manos KARDASIS (Glyfada-Athens, GREECE)

http://kardasis.weebly.com/mars-2022.html

¤••••• Subject: Mars - April 3rd

Received: 5 April 2023 at 05:20 JST

Hi To All!,

Here are my latest sessions

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230403/EMr03Apr23.png

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤••••• Subject: Mars 2023 April 3 from Lindby

Received: 5 April 2023 at 05:14 JST

Dear all,

Weather has been lousy here for the past few weeks, but last night I unexpectedly encountered a short few minutes with decent seeing while imaging Mars.

The result is attached here, with Pavonis and Ascraeus Mons as dark dots, a pronounced southern cap and Argyre slightly bright on the evening limb.

All the best,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230403/JWr03Apr23.png

Johan WARELL (Skurup, SWEDEN)

¤••••• Subject: Saturn 2023-04-03

Received: 4 April 2023 at 14:03 JST

Saturn images on 3 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars: April 2, 2023

Received: 4 April 2023 at 13:14 JST

Hi，

I have attached my image of Mars April 2, 2023 at 23:36 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230402/FMl02Apr23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars M230403 ishibashi

Received: 4 April 2023 at 08:37 JST

Mars Images on 3 April 2023

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230403/Is03Apr23.png

Best regards,

Tsutomu ISHIBASHI (Kanagawa, JAPAN)

¤••••• Subject: Saturn 2023-04-02

Received: 3 April 2023 at 18:51 JST

Saturn images on 2 April 2023.

Best regards,

Tomio AKUTSU (Cebu, PHLIPPINES)

Cebu Observatory

¤••••• Subject: Mars image 2023/01/22

Received: 2 April 2023 at 23:45 JST

Dear Mr. Murakami,

This is a LRGB color image of Mars from 22-Jan-2023, under average seeing:

»»»»»»»»»»»»»»»»»»»»

Mars

2023/01/22 (UT) 03:06:12

CM= 168.5°

SCT LX200UHTC 0.25m + Barlow 2x + ASI290MM + LRGB Filters @ 0.09”/pixel (f/27)

LRGB: 953/741/700/114 frames @ 176/176/166/95 fps @ 240sec

S: 4/10 – T: 3/5 – Alt: 57°

»»»»»»»»»»»»»»»»»»»»

Best regards,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230122/CTr22Jan23.png

Charles TRIANA (Bogotá, COLOMBIA)

AstroExplor Observatory

www.astroexplor.org

¤••••• Subject: Mars - Mar. 31st

Received: 2 April 2023 at 23:44 JST

Hi To All!, Here are my latest sessions and of Venus.

Venus

Efrain

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230331/EMr31Mar23.png

Efrain MORALES RIVERA (Aguadilla, Puerto Rico)

¤••••• Subject: Mars Sketch 31 March 2023

Received: 2 April 2023 at 01:08 JST

Hello,

I have attached my most recent Mars observation.

I haven't been able to observe Mars for several months, so I was happy to get a chance once more, even though Mars is very small now.

---------------------------------------

2023/03/31 0145 UT

CM: 226.8 Ls: 45 De: 2.4 Dia: 6.5"

35cm SCT f/11 @ 326x Filters: W23A and IL

S: 6/10 P T: 5/6

---------------------------------------

Thank you,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230331/MRs31Mar23.png

Michael ROSOLINA (Friars Hill, WV)

¤••••• Subject: Mars: March 30th and 31st, 2023

Received: 1 April 2023 at 10:13 JST

Hi,

I have two images of Mars March 30, 2023 at 23:40 UT and March 31, 2023 at 1:10 UT.

Thanks,

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230330/FMl30Mar23.png

Frank J MELILLO (Holtsville, NY)

¤••••• Subject: Mars M230331 ishibashi

Received: 1 April 2023 at 06:31 JST

Mars Images on 31 March 2023

https://www.kwasan.kyoto-u.ac.jp/~cmo/cmons/2022/230331/Is31Mar23.png

Best regards,

Tsutomu ISHIBASHI (Kanagawa, JAPAN)

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