Jupiter 2 Nov
#1
Posted 03 November 2012 - 04:39 AM
Okay, so Jupiter just seems to freeze and a ton of small detail features become crystal clear during the steadiest moments. We all know the experience, and last night was better than average. Still a few bits of blurred seeing, but more often than not pretty darn nice.
The NTB was clearly bifurcated with the darker feature exhibiting some darker knots. The NEB had several brighter rifts running through it. This is nearly the same CM as a few nights ago, so I looked for similar rift features. They did appear somewhat changed from a previous observation. Either that, or the CM was about 10 degrees off. Still, searching for familiar features was difficult. Makes me wonder if they have changed a bit or whether they moved along the system I.
The long festoon on the meridian is the longest festoon I have personally witnessed. It was long, thin, and very apparent. It almost appeared to reach out for the SEB. A not so faint EZ was seen, too.
The SEB was definitely multi toned with a darker center almost sweeping upward toward the preceding limb. In fact, it had a thinner darker feature running up it's length. The northern edge of the SEB was a bit lighter with very definite brighter spots and a molted appearance. The southern edge of the SEB near the trailing edge was also a bit lighter. I am not sure I have ever seen the SEB this well.
The NPR had two fairly faint bands near the meridian (they are too dark in the sketch.) The SPR had a band stretching across the disc. It varied in tone as shown. A fainter band was briefly seen just below on the preceding edge. Now, remarkably, there was a faint band in the Southern tropical zone on the trailing edge. I believe this is also a first for me.
Now, the night was so good, I decided to include some features I thought I glimpsed. It seems a waste not to go out on a limb to include them when conditions were so good and the adrenaline flowing.
I actually might have glimpsed some ovals in the SPR. Their placement is a bit odd, but I did glimpse something as shown or close to it. And also, one brighter spot in the NPR? Really not sure it's there, but hey...I thought I saw it and am hanging out on that limb, here. And I am pretty sure there is a bright knot on the SEB along it's longitudinal axis near the trailing edge. Two darker spots along the SEB's southern edge seemed to pop up periodically, so they got sketched, too. I am dying to study a current image of this CM to verify some of those more difficult observations.
Anyway, observation began about 2 Nov 1600UT and lasted for an hour and a half. Beginning CM I:170 II:14 III:62, seeing (9/10) and transparency very good with the moon nearby.
Wonderful night when Jupiter just "pops" like that...thanks for sharing. (Pete, nailed "The Paw" last night, too. )
#2
Posted 03 November 2012 - 10:01 AM
That's a great sketch Nofme and I've studied the nuances in spots and belts and such. The Paw by the way can u make sketch of it? Is it seen as one unifying structhre or are the individual craters noted?
Sounds like an unforgettable night.
Pete
#3
Posted 03 November 2012 - 10:06 AM
Pete
#4
Posted 03 November 2012 - 10:08 AM
Pete
#5
Posted 03 November 2012 - 10:34 AM
Yes, individual craters in crater form. Was curious if it could be done soon after full moon. Sabine C and the Paw were pretty easy at times. Small, but definitely in crater form.
Not sure what you mean by unifying structure, but they are there along one arm of a lighter "X" shaped albedo feature just south of Aldrin and Collins. I did make a sketch last year, but never posted it. Even thought to map smaller craters that night. I might still have the sketch, lemme check. There is a bright rill running south, no? I did see that last night and should have sketched it.
Pete, either I am gaining experience with observing Jupiter or the scope is just performing well even without the baffle. But, last night was just stellar. Man, how I wish you would grab your 6" or 8" and see the same. A pleasure shared is a pleasure doubled.
I am EAGER for you, too. Jupiter is just killing me. Tonight I went drinking, but so tempted to take the scope out, again. Better not...better sleep it off.
Edit: Ooops, just checked, maybe the Paw was the third crater and unseen. I saw two last night, Sabine C was one and the other might not have been the Paw. But, I have seen them, all three...last night just two. *BLEEP*, maybe I did not observe the Paw, after all.
#6
Posted 05 November 2012 - 06:13 PM
Very good sketch of Jupiter .
CS,KLU,
Tom
#7
Posted 05 November 2012 - 09:06 PM
Ed D
#8
Posted 05 November 2012 - 10:26 PM
Thank both of you.
#9
Posted 06 November 2012 - 09:43 AM
#10
Posted 06 November 2012 - 09:58 AM
#11
Posted 06 November 2012 - 10:24 AM
yes, jupiter takes time to let the details sink in. and if seeing is that good, you're in a hurry as well to get everything on paper because of it's fast rotation
#12
Posted 06 November 2012 - 10:26 AM
#13
Posted 06 November 2012 - 11:44 AM
Kris, absolutely, always racing the rotation. About an hour is pushing it for me, but always need more time. At times, the rotation has been reflected in the sketch with the northern hemisphere rotated 10 degrees more than the south. Man, if you get behind the power curve, it can get hard to place features accurately.
#14
Posted 06 November 2012 - 01:12 PM
Beautifully done. You are picking up very fine detail in this Jupiter sketch.
Almost got to make a sketch a couple of days back, scope set up, waiting for a cool down - then heavy cloud cover for the remainder of the night.
I'm enjoying Jupiter through sketches by others especially yours.
Frank
#15
Posted 06 November 2012 - 01:53 PM
I cannot wait until you get some sketches up, Frank. It was quite enjoyable seeing your work during the Mars fly by. I'd almost bet Jupiter will excite many of us this season. I cannot wait for you to see what's there to be seen, too. And I feel your pain on the clouds, same happened tonight.
#16
Posted 06 November 2012 - 05:30 PM
#17
Posted 06 November 2012 - 09:59 PM
Keep drawing! GW
#18
Posted 06 November 2012 - 10:08 PM
Thank you, Glen. Oh yes, planetary sketching is what reinvigorated my love for observing.
#19
Posted 06 November 2012 - 10:11 PM
#20
Posted 06 November 2012 - 10:38 PM