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Jupiter and Io last night.

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#1 Paul G. Abel

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Posted 29 June 2019 - 08:06 AM

Hi all,

 

Please find attached a drawing of Jupiter I made last night with my 8 inch Newtonian in my home observatory.  I have to say, I was quite impressed with image quality- the details on the disk were easier to see despite the low altitude of the planet.  The main feature was the dark and turbulent SEB(s), and the start of the STropB in the South Tropical Zone.  The EZ was rather active as was the NEB, the NTB and NNTB contained darker sections.  Io is shown in the drawing and was probably the strongest colour I have ever seen, no doubt this is due to the low altitude.

 

Best wishes,

-Paul

 

Jupiter_2019-06-29-0012UT_visual_PAbel.png


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#2 Uwe Pilz

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Posted 29 June 2019 - 09:12 AM

I observed Jupiter last night too, around 22°° h UT. The planet is quite low here, but yesterday the air was steady enough to see some detail.

 

The most impressive thing is the yellow-bron equator zone, which is normally bright. It's brightness arises form NH4 crystals. From time to time they evaporate and open the view to the lower regions which consists of iron and sulphur. Very interesting!

 

(4 inch refractor, mirror reversed)

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  • 1906282200Jupiter_RApo_123.jpg

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#3 Paul G. Abel

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Posted 29 June 2019 - 09:33 AM

Hi Uwe,

 

Yes the EZ is unusual, however it has done this before.  In 1964 the EZ also marked considerably- perhaps more so than at the moment.  While it is agreed the ammonia ice crystals give rise to the bright zones, there is still some debate over the exact chemistry involved with the darker colours.  Undoubtedly hydrogen sulphide plays apart but there are probably other organic molecules present too.

 

Cheers,

-Paul



#4 alvarete

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Posted 29 June 2019 - 09:45 AM

Paul Uwe excellent drawings and info.
Txs
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#5 Special Ed

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Posted 29 June 2019 - 09:56 AM

Nice drawings, Paul and Uwe.  smile.gif   I looked at Jupiter too at ~0330 UT 29 June  through a friend's 8" SCT with very good seeing and we could see the South Tropical Belt, too.


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#6 Aquarellia

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Posted 30 June 2019 - 09:19 AM

Nice drawings, Paul and Uwe. As Michael I looked at Jupiter too, that was during a public session yesterday June 29th from 20h to 22h UTC

 

Here the quick sketch I shared with the public to show them what they have to discover through the EP ...

201906292300-jupiter_l.jpg

 

And here the coffee watercolor souvenir I did just before the session:

 

Rians-2019-orig_l.jpg

 

Clear sky

Michel


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#7 niteskystargazer

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Posted 01 July 2019 - 11:14 AM

Paul

 

Good sketch of  Jupiter and Io last night. smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#8 Paul G. Abel

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Posted 06 July 2019 - 10:52 AM

Hi all, some nice drawings there- @Aquarellia I particularly like the watercolour of everyone observing!  



#9 Roragi

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Posted 09 July 2019 - 01:44 PM

What a collection of great sketches, congratulations to all.

 

Roberto.


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