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Astrophotography and Sketching >> Sketching

Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Jupiter 18 Dec 2012
      12/18/12 11:10 AM Attachment (45 downloads)

It appeared Jupiter might be a bit boring tonight. I was wrong. Seeing and transparency were descent, but it did give me a chance to really reach down and try to see more color.

Jupiter's hues were not bombastic, like last night, but they were there. Also, the real lack of large swaths of color for comparison made the chore more difficult. That's okay, though, it just meant trying harder. So, here's my best attempt at it.

The SEB is particularly interesting. It did seem lined on both edges by "not brown" hues. The southern edge appeared to be pretty dark, maybe dark gray. It seemed to stretch the length of the belt in varying shades. Across the northern edge, well, it was a bit lighter. In fact, maybe blue-gray. Interestingly, I got some flashes of festoon blue, too. Weird.

Anyway, one thing stunned me were some tiny protrusions popping north into the south EZ. They very faintly hinted blue. Truthfully, not sure they are really there or how many, but I am reasonably confident I saw about three.

Oh, two white ovals tonight. The first one, closest to the meridian is A6, I believe, the one trailing would be A7. Not easy, but they did pop a few times. Also, EWS A/B was pretty apparent along the northern NEB near the trailing limb.

Speaking of the NEB, the rifts were pretty nice. ONe seemed to have a bright knot in it (seen at 240x.) A few gray clouds and some darker brown albedo. The NEB and the SEB appeared basically the same general brownish hue. The NEB was less saturated, weaker tones generally. At times, the NEB has an eerie ruddy glow, other times not. I suspect it's either transparency on different nights or actual changes in hue in different parts of the belt.

The EB was quite prominent, broken, and appeared molted. The festoons were only slightly dark blue-ish. There was some weaker blue hues riding over top of each. No real wisps seen. But, one massivly bright white feature was nestled against the festoon on the meridian and even cut north into the NEB.

The EZ north was generally more Tawney than the EZ south. Same with the STrZ, it was light gray while the STZ was pretty much white. At least a streak of white running along the SSTB. The STB was seen pretty much across the disc with the trailing portion more prominent.

Both northern and southern regions showed some darker and lighter albedo. No real belt seen in the north. I did observe Jupiter for another hour trying to confirm the colors shown.

Many details were pretty easy, however a lot of features seen popped occasionally and took a good long time to tease out. That's part of the challenge, part of the fun, it's the reward. Nope, not boring at all. Plenty to see tonight and a great exercise in trying to really see more color.

Seeing 8/10, transparency 3 to 4/5. Sketch was done at 174x OU HD 18mm Ortho and Celestron 1.6X Shorty. CM I ~155 and CM II ~ 2 degrees.

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Entire thread
Subject Posted by Posted on
* Jupiter 18 Dec 2012 Asbytec 12/18/12 11:10 AM
. * Re: Jupiter 18 Dec 2012 niteskystargazer   12/18/12 04:44 PM
. * Re: Jupiter 18 Dec 2012 azure1961p   12/18/12 06:03 PM
. * Re: Jupiter 18 Dec 2012 Andrev   12/18/12 07:33 PM
. * Re: Jupiter 18 Dec 2012 Ed D   12/18/12 07:47 PM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/18/12 10:36 PM
. * Re: Jupiter 18 Dec 2012 azure1961p   12/18/12 11:33 PM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/18/12 11:57 PM
. * Re: Jupiter 18 Dec 2012 frank5817   12/19/12 12:33 AM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/19/12 12:51 AM
. * Re: Jupiter 18 Dec 2012 Heidescoper   12/19/12 02:21 AM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/19/12 03:52 AM
. * Re: Jupiter 18 Dec 2012 stray1   12/19/12 04:09 AM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/19/12 04:12 AM
. * Re: Jupiter 18 Dec 2012 stray1   12/19/12 04:48 AM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/19/12 04:58 AM
. * Re: Jupiter 18 Dec 2012 Chopin   12/19/12 09:56 PM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/19/12 10:18 PM
. * Re: Jupiter 18 Dec 2012 azure1961p   12/20/12 07:58 AM
. * Re: Jupiter 18 Dec 2012 JimPie   12/20/12 04:10 PM
. * Re: Jupiter 18 Dec 2012 Dean Norris   12/20/12 04:32 PM
. * Re: Jupiter 18 Dec 2012 Asbytec   12/20/12 04:34 PM

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