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Jupiter: an ode to July

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#1 DMach

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Posted 23 August 2019 - 03:36 AM

Due to a combination of travel and hectic work commitments, I've fallen drastically behind on my image processing. So, to quote a movie lyric by Trey Parker: "we're gonna need a montage!"

 

In the "warts and all" spirit, I have included a mix of imaging conditions and data quality. I have also kept the processing similar between images, so that the differences you see will be primarily data quality.

 

On many of the nights there was a gusty breeze, which is unusual here (unless it's about to rain). For the images in mid to late July, this was causing an extreme amount of image shake and is actually the primary reason for the blurring in these images. I eventually realised the screws for the adapter plate on my iOptron tri-pier had worked themselves slightly loose, compromising the rigidity of the mount assembly. The situation was much improved for the final session in this series.

 

All images taken with my standard setup: C11, CEM60, ASI290MC, PowerMate 2x, UV/IR cut filter, ZWO ADC.

 

Jupiter 2019-07-21 Montage.png

Montage of three imaging sessions
Upon loading the images into Astrobin, I realised I had (quite accidentally) captured almost identical aspects of Jupiter on the 4th, 16th and 21st July. This allowed me to create a montage (and animation below) illustrating the relative motion of Jupiter's cloud formations over that 2.5 week period.

 

 

[to be continued ...]


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#2 DMach

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Posted 23 August 2019 - 03:39 AM

Jupiter 2019-07-21 Animation.gif

Animation of the above montage
For a higher quality animation in the APNG format, click here. Do note APNG is not supported by all browsers (Internet Explorer in particular).

 

Jupiter 2019-07-04 15-11 v7 30pc pd.png

2019-07-04 15:11 UT
Probably the sharpest of the images, taken before my mount shake issue manifested (and before I installed Bob's knobs, which I suspect are causing a separate issue).

I also like the way the two white ovals and dark raft (directly south of the GRS) makes it look like someone is playing a game of "break out" with the clouds in the SEB.

 

[to be continued ...]

 


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#3 DMach

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Posted 23 August 2019 - 03:41 AM

Jupiter 2019-07-07 13-37 v5 30pc.png

2019-07-07 13:37 UT
At the beginning of this session I was only able to complete a handful of 90s runs before clouds moved in. As such, the detail is good but the noise is higher than ideal.

 

Jupiter 2019-07-07 14-40 v5 30pc.png

2019-07-07 14:40 UT
An image from later in the session above, after the worst of the clouds had passed. I was still dodging clouds and transparency was variable, hence the drop in detail.

 

[to be continued ...]


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#4 DMach

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Posted 23 August 2019 - 03:44 AM

Jupiter 2019-07-16 15-04 v5 30pc.png

2019-07-16 15:04 UT
I did already post this image on CN in a separate thread, but including it here for completeness and comparison. This imaging session was memorable due to the dark blue, almost black eddy of clouds in the turbulent wake of the GRS (to the NW of the GRS itself). So dark was this eddy that his feature was immediately obvious in the raw data ... I initially worried it was a big chunk of crud in the imaging chain!

 

Another interesting feature in this image is the combination of clouds that looks for all the world like a lower case letter "a" (in the northern polar region, almost directly north of the GRS).

 

Jupiter 2019-07-19 15-40UT v5 30pc.png

2019-07-19 15:40 UT
Running out of things to say ... lol.

 

[to be continued ...]


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#5 DMach

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Posted 23 August 2019 - 03:46 AM

Jupiter 2019-07-21 14-14 v5 30pc bicubic.png

2019-07-21 14:14 UT
A pleasing amount of detail evident in this image, including a "c" shaped fine line of darker cloud in the GRS.

 

 

Jupiter 2019-07-27 14-33 v5 30pc.png

2019-07-27 14:33 UT
This was the session that was most severely impacted by the mount vibration.

 

 

[to be continued ...]


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#6 DMach

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Posted 23 August 2019 - 03:49 AM

Jupiter 2019-07-29 14-44 v5 30pc.png

2019-07-29 14:44 UT

 

Jupiter 2019-08-01 14-58 v5 30pc.png

2019-08-01 14:58 UT
OK, I snuck one image from August in as well ... wink.gif Nice to capture Oval BA for a change (it's been a while for me) and I had identified and fixed my mount vibration issue by this time.

 

 

Always fade out at the end of a montage ...

 

If you fade out it will seem like more time has passed in a montage ...


Edited by DMach, 23 August 2019 - 04:55 AM.

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#7 Lacaille

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Posted 23 August 2019 - 04:15 AM

Superb work! Really pushing the envelope for a C11!

Good that you are also exposing us to your "auteur" montage philosophy!

Mark

#8 Foc

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Posted 23 August 2019 - 04:47 AM

Something for everyone in that Jupiter collection!  Lots of terrific images. It is good to enjoy more of your 2019 work. With your work here and Daryl's recent  it feels like an official toast has been raised to the season.   However some more good images are still coming in. 



#9 DMach

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Posted 23 August 2019 - 05:02 AM

Superb work! Really pushing the envelope for a C11!

Good that you are also exposing us to your "auteur" montage philosophy!

Mark

Thanks Mark ... I can't take credit for the "montage philosophy" though, that's a direct quote from the movie/song I'm referencing.  :)

 

Something for everyone in that Jupiter collection!  Lots of terrific images. It is good to enjoy more of your 2019 work. With your work here and Daryl's recent  it feels like an official toast has been raised to the season.   However some more good images are still coming in. 

Couldn't agree more - Jupiter is clearly not done with 2019 yet!



#10 Kokatha man

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Posted 23 August 2019 - 07:27 PM

...truly an "ode" Darren..! waytogo.gif waytogo.gif waytogo.gif waytogo.gif

 

Now all you have to do it rescale those images equally in the animation from the 4th, 16th & 21st to put the cherry on top of the final layer of cream on the cake..! :lol: 


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#11 Tulloch

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Posted 23 August 2019 - 07:53 PM

Fantastic set of images, thanks for posting.



#12 DMach

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Posted 23 August 2019 - 10:24 PM

...truly an "ode" Darren..! waytogo.gif waytogo.gif waytogo.gif waytogo.gif

 

Now all you have to do it rescale those images equally in the animation from the 4th, 16th & 21st to put the cherry on top of the final layer of cream on the cake..! lol.gif

Thanks Darryl! Yes, I got a bit lazy there ... have a mountain (well, small hill) of Saturn data to get through as well, but might come back to it. My excuse for now: it demonstrates the change in apparent size over that period as well lol.

 

Fantastic set of images, thanks for posting.

Thanks Andrew.  :)



#13 Tom Glenn

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Posted 24 August 2019 - 01:00 AM

Really fantastic images, Darren.  You've outdone yourself this season!  



#14 DMach

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Posted 24 August 2019 - 02:17 AM

Really fantastic images, Darren. You've outdone yourself this season!


Thanks Tom, appreciate the kind words ... nearly doubling the aperture of my 'scope has certainly helped lol.

#15 DMach

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Posted 24 August 2019 - 07:22 PM

Now all you have to do it rescale those images equally in the animation from the 4th, 16th & 21st to put the cherry on top of the final layer of cream on the cake..! lol.gif

OK here's the "size normalised" version:

 

Jupiter 2019-07-21 Animation resized.gif

 

APNG format version can be found here:

 

https://www.cloudyni...724_1391006.png


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