Solar
& Planetary LtE Now for CMO/ISMO #63 (CMO
#437)
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¤····Subject: SOLAR
IMAGES 19-21-25-2015
Received:
Hi Guys , rather a
lot of images but the file sizes are not too big. Sit back and have a full
screen slide show.
You might like to
read this web page http://astrogeo.oxfordjournals.org/content/45/4/4.14.full
related
to “sun2015Jul21_dbvt-Progress-ar2387”, which shows convection cells in the
umbra and light bridge as described in the text.
The shocked looking
prom is a composite of two prom images an one for the surface. The extensions
were very faint, but a lot of the best ones are.
Both AR 2389 and 2390
appear to be made up totally of solar pores, i.e. spots with no penumbra. I see
2390 went on to grow penumbra, whereas 2389 currently seems to be fading away.
Best wishes
Dave TYLER (Bucks, the
www.david-tyler.com
Ham call G4PIE
¤····Subject: Saturn,
July 25
Received:
Hi all, some
reasonable seeing last night for a while on Saturn, I think all the interesting
stuff is on the other hemisphere...
cheers, Anthony
Link:
http://www.acquerra.com.au/astro/gallery/saturn/20150725-115606/s20150725-115606utc.png
Anthony WESLEY (
¤····Subject: Uranus
& satellites 2015.07.2015
Received:
Dears,
I finish this rather rich astronomy week for me (3 observations sessions from
the middle of the night to dawn ,with each time good seeing), with my first
Uranus this year, made with the new cam. Got lucky on that one, I spent more
than half an hour trying to aim the scope to Uranus - not easy when the sky
does not let you see stars fainter than mag 4/4.5 and when you have a Dobson
and Telrad without any coordinate circles. I could do a single 15min run, with
the same focal length as the one I use for Saturn (!), and only 120ms exposures
....
http://www.astrosurf.com/delcroix/images/uranus_20150724_MDe_full.jpg
With the details: http://www.astrosurf.com/delcroix/images/planches/u20150724i-03h54.7UT-MDe.jpg
Despite the clear sky
before sunrise, I think the result is really good, we can see clearly a white
band near the North pole. This sensor allows me really to make significant
progress in planetary faint light infrared imaging (CH4, Uranus, Neptune).
Clear skies,
Marc DELCROIX (
¤····Subject: Neptune
& Triton 2015.07.24
Received:
Dears,
From July 24th, 3rd
These are "potential" spots - I believe that to be sure we need other
observations.
http://www.astrosurf.com/delcroix/images/planches/n20150724i-01h45.4UT-MDe.jpg
With three
observations from the middle of the night to dawn in 5 days, I guess deserve
some sleep now ...
I will post shortly a Uranus from the same night before.
Steady skies,
Marc DELCROIX (
¤····Subject: solar
images 11 and
Received:
Hi Guys The centre
third of July has not been as sunny as the first, but in what blue sky there
was, I saw some decent activity. Watching the amazing Pluto images on the sky
at night, one showed large irregular polygons. A guy suggested they may be
convection cells and likened them, to convection cells seen in boiling
porridge. They also remind me of those seen on the sun. I find it fascinating
that such vastly different circumstances can produce such similar effects.
best wishes
Dave TYLER (Bucks, the
www.david-tyler.com
Ham call G4PIE
¤····Subject: Neptune
& Triton 2015.07.21
Received:
Dears,
Another night with good seeing,
http://www.astrosurf.com/delcroix/images/planches/n20150721i-02h52.3UT-MDe.jpg
Steady skies,
Marc DELCROIX (
¤····Subject: Neptune
& Triton 2015.07.20 with bright spot
Received:
Dears,
First try to catch the bright spot on
http://www.astrosurf.com/delcroix/images/planches/n20150720i-02h32.5UT-MDe.jpg
That
camera works quite well in infrared, I even imaged the faint
I could update the ephemeris for the brightest spot transit:
WinJUPOS 10.2.0 (Neptune), C.M. transit times, 2015/07/20 18:31
Object longitude: L = 222,4° + 23,3313°/d * (T - 2015 Jul 16,5)
Time interval: 2015 Jul 12,0 ... 2015 Sep 01,0
Output format: Date UT (C.M. of System 1)
------------------------------------------------------------------------------
2015 Jul 12 09:49 ( 127°)
2015 Jul 13 02:39 ( 143°) 19:29 ( 160°)
19:30 ( 160°)
2015 Jul 14 12:20 ( 176°)
2015 Jul 15 05:10 ( 192°) 22:01 ( 209°)
2015 Jul 16 14:51 ( 225°)
2015 Jul 17 07:42 ( 242°)
2015 Jul 18 00:32 ( 258°) 17:23 ( 274°)
2015 Jul 19 10:13 ( 291°)
2015 Jul 20 03:04 ( 307°) 19:54 ( 323°)
2015 Jul 21 12:44 ( 340°) 12:45 ( 340°)
2015 Jul 22 05:35 ( 356°) 22:25 ( 12°)
2015 Jul 23 15:16 ( 29°)
2015 Jul 24 08:06 ( 45°)
2015 Jul 25 00:57 ( 62°) 17:47 ( 78°)
2015 Jul 26 10:38 ( 94°)
2015 Jul 27 03:28 ( 111°) 20:19 ( 127°)
2015 Jul 28 13:09 ( 143°)
2015 Jul 29 05:59 ( 160°) 06:00 ( 160°)
22:50 ( 176°)
2015 Jul 30 15:40 ( 192°)
2015 Jul 31 08:31 ( 209°)
2015 Aug 01 01:21 ( 225°) 18:12 ( 242°)
2015 Aug 02 11:02 ( 258°)
2015 Aug 03 03:53 ( 275°) 20:43 ( 291°)
2015 Aug 04 13:34 ( 307°)
2015 Aug 05 06:24 ( 324°) 23:15 ( 340°)
2015 Aug 06 16:05 ( 356°)
2015 Aug 07 08:56 ( 13°)
2015 Aug 08 01:46 ( 29°) 18:36 (
45°) 18:37 ( 46°)
2015 Aug 09 11:27 ( 62°)
2015 Aug 10 04:17 ( 78°) 21:08 ( 95°)
2015 Aug 11 13:58 ( 111°)
2015 Aug 12 06:49 ( 127°) 23:39 ( 144°)
2015 Aug 13 16:30 ( 160°)
2015 Aug 14 09:20 ( 176°)
2015 Aug 15 02:11 ( 193°) 19:01 ( 209°)
2015 Aug 16 11:52 ( 226°)
2015 Aug 17 04:42 ( 242°) 21:33 ( 258°)
2015 Aug 18 14:23 ( 275°)
2015 Aug 19 07:14 ( 291°)
2015 Aug 20 00:04 ( 307°) 16:55 ( 324°)
2015 Aug 21 09:45 ( 340°)
2015 Aug 22 02:36 ( 357°) 19:26 ( 13°)
2015 Aug 23 12:17 ( 29°)
2015 Aug 24 05:07 ( 46°) 21:58 ( 62°)
2015 Aug 25 14:48 ( 78°)
2015 Aug 26 07:38 ( 95°) 07:39 ( 95°)
2015 Aug 27 00:29 ( 111°) 17:19 ( 127°)
17:20 ( 128°)
2015 Aug 28 10:10 ( 144°)
2015 Aug 29 03:00 ( 160°) 03:01 ( 160°)
19:51 ( 177°)
2015 Aug 30 12:41 ( 193°) 12:42 ( 193°)
2015 Aug 31 05:32 ( 209°) 22:22 ( 226°)
22:23 ( 226°)
------------------------------------------------------------------------------
Good luck!
Marc DELCROIX (
¤····Subject: Saturn
2015.07.15
Received:
Dears,
Under correct
conditions, no visible details (observable formations being on the other side
of the globe).
In infrared: http://www.astrosurf.com/delcroix/images/planches/s20150715i-21h40.7UT-MDe.jpg
In color: http://www.astrosurf.com/delcroix/images/planches/s20150715-21h13.7UT-MDe.jpg
Steady skies,
Marc DELCROIX (
¤····Subject: solar
images 7-9-10-July-2015
Received:
Hi Guys More progress
of the magnificent AR2381 making its way to the off limb. Also a couple of
shots of the newer spot ar2384 from the 9th and 10th, when it was sporting a small
flare at 07:54ut.
Best wishes
Dave TYLER (Bucks, the
www.david-tyler.com
Ham call G4PIE
¤····Subject: Saturn
July 13, 63N and EZ storms
Received:
Hi all, some
reasonable seeing last night on Saturn for a while with the two major storm
systems both visible. The +63N storm is resolved as a small oval shaped dark
spot, and the equatorial bright storm shows some structure - several bright
nucleii either side of a band of darker material. I see two bright spots above
(just north of the equator), closely spaced, and a bright spot south of the
equator, just above the ring shadow.
The north polar hex and its central storm are also visible through this filter
(685nm longpass). This image is a combination of 3 images in WinJupos.
Link:
http://www.acquerra.com.au/astro/gallery/saturn/20150713-121830/s20150713-121830utc.png
regards,
Anthony
Anthony WESLEY (
¤····Subject: solar
images 3-4-6-July-2015
Received:
Hi Guys here are some
solar scenes from 3-4-6-July-2015. Star of the show for me on the 3rd, was
AR2373 captured at 09:18ut during a brief moment of excellent “wow-type”
seeing. This was quickly replaced by the magnificent AR2381, that was actually
quite humble on the 4th, but an attention seeking beast of a spot by the 6th.
Best wishes
Dave TYLER (Bucks, the
www.david-tyler.com
Ham call G4PIE
¤····Subject: An
Historic Encounter with Pluto ... Up Ahead!
Received:
Dear Friends and Colleagues,
An historic moment is nearly upon us.
In only two more days, and after a long journey of nine years, the New Horizons
spacecraft will make its highly anticipated flight past Pluto and its five
moons. With scientific sensors on alert, the spacecraft will
silently and quickly go about athering precious bits of insight into what
prevails on and around this body, more than 30 times farther from the Sun than
is the Earth. Its arrival at Pluto marks the start of our official exploration
of the Kuiper Belt ... that distant realm beyond
Already, strange features are seen on Pluto's surface (see attached 2 recent
images of Pluto). Might they be as strange as the structures
Voyager found in 1989 on
I would say so.
Accordingly, in preparation for our grand entrance into the Kuiper Belt in two
days' time, and in anticipation of that moment when we come face to face for the
first time with its most renowned member, gaze upon the phenomenal discoveries
Voyager made at Triton 26 years ago, seen here in this large mosaic of Voyager
images ...
http://www.ciclops.org/view_media/18314/Global-Color-Mosaic-of-Triton
... and wonder.
And allow next Tuesday to remind you that you have been blessed to live in
extraordinary times.
(Mosaic
caption here: http://www.ciclops.org/view.php?id=3580
;
More
Triton images can be found at http://t.co/NLj3N1pQzu )
Enjoy!
Carolyn PORCO (Boulder, CO)
Cassini Imaging Team leader
Director, CICLOPS, Space Science Institute, Boulder, CO
Visiting Scholar, UC Berkeley, CA
Fellow, California Academy of Sciences
¤····Subject: Saturn
& satellites 2015.07.09, my 1st with new ZWO224MC
Received:
Dears,
I test the new color
camera from ZWO, ASI224MC ( http://astronomy-imaging-camera.com/products/usb-3-0/asi224mc/
) :
An average result
first, I am not good anymore at direct color imaging :
http://www.astrosurf.com/delcroix/images/planches/s20150709-21h21.3UT-MDe.jpg
But
some others get excellent color images with this camera, and this was my first
trial ... ;)
With specific
filters, this sounds very promising for my first test in infrared :
http://www.astrosurf.com/delcroix/images/planches/s20150709i-22h59.6UT-MDe.jpg
With the same gain as
with my ASI174MM which gives me excellent results (despite Saturn being less
than 28属 high) since the beginning of this apparition, I here expose twice
faster, and the image is really clean - very low noise in faint lights, the
satellites here looks really nice, this is the best I did this year. And there
is still room for improvement with the gain setup moderate.
Note on this image
the perturbed polar area rising top left of the globe.
And the best for me
is that somehow magic image of Saturn in methane absorption band, the best one
I ever got, with nice bands and relatively low noise (for an image in that
wavelength).
http://www.astrosurf.com/delcroix/images/planches/s20150709c-22h26.2UT-MDe.jpg
Again, large room for
improvement: that image was made without binning (it's not resized, anyway no
binning on that camera but it looks like it's not a problem :) ), with an
exposure time about twice shorter than with the monochrome ASI120MM, and gain
not setup to the maximum ...
This first test
really satisfies me, I still need to optimize the parameters - not tonight,
wind is back unfortunately ....
Steady skies,
Marc DELCROIX (
¤····Subject: RE:
solar images 29_30-7-2015 and
Received:
Hello Dave (and other
solar observers),
Herewith also some
recent observations. Imaging done in the focal plane of my 25 cm f/30 Cassegrain
telescope, using a redfilter and a webcam DMK31AU03.
Zonnevlek AR2373 1
Juli 2015 9h56 UT RGB def
Zonnevlek AR2373 1
Juli 2015 10h15 UT roodfilter b,
Zonnevlek AR2373 4 Juli 2015 10h37 UT roodfilter
Best regards.
Leo AERTS (
¤····Subject: Saturn,
July 6
Received:
Hi all, here is a
low-res colour image of Saturn from two nights ago. No storms or fine detail
are visible but the image does show the changing colouration of the various
zones in Saturns north.
regards, Anthony
Link:
http://www.acquerra.com.au/astro/gallery/saturn/20150706-113839/s20150706-113839utc.png
Anthony WESLEY (
¤····Subject: solar
images 29_30-6-2015 and
Received:
Hi Guys Cloud
gaps allowed me to follow the changes in AR2376 and AR2373 over 3 days in white
light and two days in Ha.
Best wishes
Dave TYLER (Bucks, the
www.david-tyler.com
Ham call G4PIE
¤····Subject: Gigantic
Received:
Dear Bill,
I believe you are now awfully busy in the Plutonic ore fascination. When I was
enjoying the "textbooky" animation showing the mutually tidally
locked Pluto/Sharon system's rotation/revolution(just like a hammer throwing
performance!)...
http://www.nasa.gov/nh/pluto-charon-surfaces-in-color
I noticed a huge quasi-circular lighter
area on the "hammer thrower's back of the head", the antipodal region
of the sub-Charon point on Pluto；what on Pluto is
that!? An upper limit size Gigantic impact basin, one third across
of the main body, like the
Please take good care of yourself in this special period!
PS: My wife Reiko is well for now, we will be
visiting
enjoy Gion-Matsuri, one of the most famous festivals in
Reiichi KONNAÏ (
¤····Subject: Saturn
and satellites 2015.06.28
Received:
Dears,
Under average
conditions, the result look good to me nonetheless (bear in mind it's only at
28°
elevation), probably thanks to the ASI174MM camera.
No details visible as both the EZ spot and the polar perturbation were on the
other side of the globe. No impact detected with DeTeCt.
In infrared:
http://www.astrosurf.com/delcroix/images/planches/s20150628i-21h06.2UT-MDe.jpg
In LRGB:
http://www.astrosurf.com/delcroix/images/planches/s20150628-21h30.8UT-MDe.jpg
I also have
individual color layers, but they don't bring much more:
L: http://www.astrosurf.com/delcroix/images/planches/s20150628l-21h30.8UT-MDe.jpg
R: http://www.astrosurf.com/delcroix/images/planches/s20150628r-21h37.2UT-MDe.jpg
G: http://www.astrosurf.com/delcroix/images/planches/s20150628g-21h35.0UT-MDe.jpg
B: http://www.astrosurf.com/delcroix/images/planches/s20150628b-21h36.4UT-MDe.jpg
Steady skies,
Marc DELCROIX (
¤····Subject: Venus/Jupiter
conjunction
Received:
Hi, all
My attempt at capturing
the conjunction this evening.
Wide field image was
taken with my Williams Optics 72mm to obtain positions.
Planetary images
taken with my 355mm SCT and copied and pasted onto widefield view.
Best regards,
¤····Subject: Rolling
and Leaping proms sketch June 28th - Bray Co Wicklow
Received:
Rolling and Leaping
proms east solar limb sketch -
Pastels and Conte on black paper - in cloud gap
Best regards to all
Deirdre
Deirdre KELLEGHAM (Bray, Co
Astronomer
Artist
Educator
Website http://deirdrekelleghan.net