Jupiter & Saturn, ZWO ASI120MC

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turfpit
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Jupiter & Saturn, ZWO ASI120MC

Post by turfpit » Sun Jun 28, 2020 7:11 pm

Captured June 24, 2020 around 01:30. Planets at 15°elevation, seeing=shocking (2x Barlow a waste of time). A session to test out my WinJupos workflow (to compensate for Jupiter 10 hour rotation). Sets of 10 videos captured between 00:45 and 01:45, last set nearest meridian used as planets brightest then.

Jupiter-Saturn.JPG
Jupiter-Saturn.JPG (16.02 KiB) Viewed 152 times


Equipment: Celestron AVX mount, Celestron C8 SCT, IR cut filter, ZWO ASI120MC (USB2)

Capture:
  • Enable WinJupos filenames in SharpCap settings
  • Set Brightness=0
  • Set gain=70 (out of 100)
  • Adjust exposure (0.007s) until histogram ~70% saturation
  • Capture a sequence of 10 x45s SER videos @ 100fps (gives 5000 frames per video)
2020-06-24-0036_6.CameraSettings.txt
(747 Bytes) Downloaded 5 times

Process:
  • Autostakkert!3, stack 10 videos, each best 25% of 5000 frames
  • Registax6, auto RGB balance, mild sharpening
  • WinJupos, align 10 images and combine to single image
  • Registax, sharpen + contrast + brightness

Capture in progress:

capture-in-progress.JPG
capture-in-progress.JPG (82.4 KiB) Viewed 152 times


Unprocessed capture video played back in SER Player:

unprocessed-video.JPG
unprocessed-video.JPG (41.32 KiB) Viewed 152 times


I will keep practising https://apod.nasa.gov/apod/ap200628.html, thanks for that link Brian :)

[EDIT]
The left hand image is a single video processed with Autostakkert!3 and Registax 6.
The right hand image is the result of combining 10 processed videos with WinJupos.

single-versus-10stack.JPG
single-versus-10stack.JPG (12.93 KiB) Viewed 125 times


Dave

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oopfan
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Re: Jupiter & Saturn, ZWO ASI120MC

Post by oopfan » Sun Jun 28, 2020 7:20 pm

Dave,

You're welcome, Hotshot :-)

I love that name: WinJupos

Brian

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turfpit
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Re: Jupiter & Saturn, ZWO ASI120MC

Post by turfpit » Sun Jun 28, 2020 7:29 pm

Brian

An interesting piece of software - WinJupos site http://jupos.org

Dave

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Re: Jupiter & Saturn, ZWO ASI120MC

Post by umasscrew39 » Sun Jun 28, 2020 7:46 pm

Beautiful, Dave. Yet another clever software I never heard of......sigh.

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turfpit
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Re: Jupiter & Saturn, ZWO ASI120MC

Post by turfpit » Sun Jun 28, 2020 8:07 pm

Thanks Bruce. Because of Jupiter's fast rotation (I think it is around 0.6° per minute), long videos do not help as the result would be a smearing of the detail. WinJupos allows for several shorter videos to be combined with the software compensating for the fast rotation. The realistic limit seems to be around 15 minutes elapsed time for a video set for Jupiter with Saturn slightly longer. Hence the need for high fps captures.

At least I understand now why my 2017 Jupiter videos (at much higher elevation) never had any detail.

Dave

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Re: Jupiter & Saturn, ZWO ASI120MC

Post by turfpit » Mon Jun 29, 2020 7:05 am

I have edited the first post to show a comparison between a single processed video and 10 processed videos combined with WinJupos.

Dave

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