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Jupiter's moons 2020-07-04: now you see them, now you don't

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#1 DMach

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Posted 13 July 2020 - 04:33 AM

After 25 straight cloudy nights, it was great to finally see the stars and planets again the night of 4th July. Work has been insanely busy, though, so it has taken quite some time to get through the processing.

 

Seeing was a little challenging, particularly the slow seeing effects (extended periods of blurring, for which I really like Darryl's description of "fizzing"). That made finding focus tricky and time-consuming, but the good news with this kind of seeing is that you can grab some good data during those fleeting moments where things settle down. Total usable frames were a little down however, so the final images have a little more noise than ideal.

 

The results of this session are best expressed by the animation, which first shows Io emerging from behind the sunlight limb and then shows Europa disappearing into Jupiter's umbra. Now you see them, now you don't!

Jupiter-with-Europa-and-Io-2020-07-05-animation-500kb.gif

 

Each frame of the animation was created by de-rotating three individual stacks for Jupiter itself (to control the noise somewhat) and combining this with a single stack at the corresponding time point for the moons.

 

The usual gear: C11, ASI290MC, PowerMate 2x, UV/IR block filter, ADC.

 

Thanks for looking!


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#2 DMach

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Posted 13 July 2020 - 04:34 AM

And here's a still image as Europa was transiting into Jupiter's umbra:

Jupiter 2020-07-04 16-24_4 LD90_wav1_3f 28pc ba.png


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#3 Tulloch

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Posted 13 July 2020 - 04:52 AM

Love the animation!

#4 Foc

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Posted 13 July 2020 - 05:09 AM

What timing!  And despite the more continental  seeing patterns you had to deal with excellent fine detail on Jupiter.



#5 KiwiRay

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Posted 13 July 2020 - 09:45 AM

Looks like a Jovian magic trick - that's a well-timed animation!  And beautiful images of Jupiter as always, Darren.



#6 descott12

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Posted 13 July 2020 - 09:52 AM

Beautiful. How many individual time points?



#7 Billytk

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Posted 13 July 2020 - 03:25 PM

Fantastic!



#8 sunnyday

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Posted 13 July 2020 - 03:27 PM

superb montage , thanks .



#9 DMach

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Posted 13 July 2020 - 09:40 PM

Love the animation!

 

What timing!  And despite the more continental  seeing patterns you had to deal with excellent fine detail on Jupiter.

 

Looks like a Jovian magic trick - that's a well-timed animation!  And beautiful images of Jupiter as always, Darren.

 

Fantastic!

 

superb montage , thanks .

Thank you all for the kind words!


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#10 DMach

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Posted 13 July 2020 - 09:44 PM

Beautiful. How many individual time points?

Thank you!

 

There were 9 captures in total which, using a rolling de-rotation of 3 individual stacks, resulted in 7 frames in the animation.



#11 Kokatha man

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Posted 13 July 2020 - 10:31 PM

Very nice Darren - we've had a few with moons doing a similar performance...& it is rather entertaining! :)



#12 Az Frank

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Posted 13 July 2020 - 10:46 PM

Nicely done animation Darren, it is fun to watch!

#13 dhammy

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Posted 14 July 2020 - 12:26 AM

Very nice detail indeed! Great to see it in an animation! 



#14 DMach

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Posted 14 July 2020 - 05:07 AM

Very nice Darren - we've had a few with moons doing a similar performance...& it is rather entertaining! smile.gif

 

Nicely done animation Darren, it is fun to watch!

 

Very nice detail indeed! Great to see it in an animation! 

Thank you all, glad you enjoyed it  :)




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