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Jupiter with 20" Planewave DK

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#1 Paul G. Abel

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Posted 27 January 2014 - 03:15 PM

Greetings all,

Please find attached a drawing made last night using the University of Leicester's 20" Planewave DK. Seeing was a little variable but we had a number of good stready moments which revealed many fine details on the disk, low passing cloud was a nuisance from time to time. Points of interest are as follows:

GRS quite prominent, it's colour was very noticeable. In good conditions it seemed that a darker core was present.
The STropZ seemed to contain some faint greyish features surrounding the GRS. At times one had the impression that the RSH completely surrounded the spot.
SEB around the GRS showed a number of interesting features. The bright wedge section just proc. the GRS was rather bright and seems to be growing in longitude. Immediately to the south is a dark brownish section which curves under the GRS.
The SEB fol. the GRS has the appearance of being 'churned up'
Lots of festoons present in the EZ, all bluish in colour. There also seemed to be a number of brighter regions inside the festoons- contrast effect?
The festoons seemed to connect at the equator in a loose EB.
NEB a thin belt containing a number of darker and lighter sections.
NTB contained a number of dark irregular sections along the northern edge.

By 0042UT, seeing was rather poor so we decided to close for the evening.
Best wishes,
-Paul

PS Congratulations to those of you who have made drawings of S2014J- alas it is has been cloudy here except last night when I found the dome obscured that part of Ursa Major!

Posted Image

#2 niteskystargazer

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Posted 27 January 2014 - 04:50 PM

Paul,

Good sketch of Jupiter :).

CS,KLU,

:thanx:,

Tom

#3 Tommy5

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Posted 27 January 2014 - 06:44 PM

Wow ,really great detail in those clouds on Jup.

#4 Andrev

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Posted 27 January 2014 - 07:56 PM

Wow Paul, you had the chance to see and try a planewave scope ! Lucky you. Beautiful sketch.

Andre

#5 kenrenard

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Posted 27 January 2014 - 09:05 PM

Paul,
This is just superb! I especially love the festoons and the GRS close up.

Fine work as usual.

Even with the poor weather I think we all got some great views of Jupiter this year! Which for that I am extremely grateful not only to see Jove myself but view the great sketches in this forum.

Ken

#6 Chopin

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Posted 27 January 2014 - 10:03 PM

I'm jealous that we're able to use such a scope. At any rate, nice sketch.

#7 Paul G. Abel

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Posted 28 January 2014 - 11:16 AM

Thanks all! The close up drawings are called strip maps, they are done when you want to examine a particular region of a planet, perhaps in a filter or at higher power. You guys might want to try making your own of the GRS to see how it varies over the apparition.

Also, I'm wondering how many of you are members of the British Astronomical Association? It would be great to have you as members and you can submit your work to the various planetary sections where it will be used in a scientific program of study which the BAA has been engaged in since it's creation in 1890. I attach a link here for those who are interested:

http://britastro.org/baa/

Best wishes,
-Pau

#8 Asbytec

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Posted 28 January 2014 - 11:22 AM

Paul, that's just gotta be nice. I note you saw a darker feature looping south of the GRS. I didn't see it directly, but trailing the GRS the STrZ and STeZ were distinctly brighter - almost white. Almost like a cocoon of white cloud embracing the GRS. Interesting.

#9 kenrenard

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Posted 28 January 2014 - 01:56 PM

Paul,
Can US folks join?

Ken

#10 Paul G. Abel

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Posted 29 January 2014 - 05:36 AM

Asbytec- yes that's the impression I am getting with my 8" telescope at home.

Kenrenard- yes US folks are more than welcome to join- you don't need to be British :)

#11 Dean Norris

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Posted 29 January 2014 - 03:52 PM

Paul,

Many interesting details in your sketch. The NTB seems to be very active. The dark sections on it have been interesting to follow lately. I note the LRS north of the NNTB in your sketch on the preceding limb. Beautiful colors in your fine sketch.

Dean






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