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My first ever Jupiter and Saturn (23 July 2021)

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#1 Sualocin

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Posted 26 July 2021 - 12:28 PM

Hi folks,

 

I don't usally post pictures on CN because I am a very beginner, and It already takes me a lot of time to set up everything, capture and process images; moreover, I am doing more EAA than Hi-res. Anyway, three nights ago I tried for the first time my new planetary imaging setup, consisting of an ASI 290MM, an Explore Scientific Focal Extender (2X), a ZWO EFW and the Baader RGB filters (I didn't use the Luminance filter). So, these are my very first images of Jupiter and Saturn, taken on 23 July from a pretty dark location on a high hill in Sicily.

 

I've surely made a lot of mistakes, but I must confess that I'm not unhappy with the results! I used Firecapture, then processed the three .ser videos with AS!, improved each channel separately with Registax, and finally composed the RGB images in GIMP.

 

Regarding exposure and gain, I set 33,3 msec. with 170-180 gain for Jupiter, and 100-130 ms and 230-260 gain for Saturn. What do you think about that? Maybe the gain for Saturn was a bit too high, the image looks noisy (and I probably failed to perfectly align the three channels in GIMP...).

 

I'm totally open to criticism, advices, and any other kind of comment. Tonight I'm setting up everything again, even if there's a bit of saharan dust in the sky, brought by the wind.

Attached Thumbnails

  • Primo Giove -3.jpeg
  • Saturn RGB.jpeg

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#2 Supernova74

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Posted 26 July 2021 - 12:49 PM

that’s very impressive well done.


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#3 KiwiRay

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Posted 26 July 2021 - 01:05 PM

These are very good, Sualocin! Lots of fine cloud details on Jupiter, and very clear banding on Saturn. I'd encourage you to post your images here more often! My only suggestion would be to work a little on the colour balance for Jupiter, which looks very pink, even in cloud bands that should look white. That should be easy to fix, though.


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#4 hornjs

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Posted 26 July 2021 - 01:13 PM

Really great Sualocin!  Would you mind sharing a picture of your imaging train on the back of your SCT?  Thanks.  



#5 Supernova74

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Posted 26 July 2021 - 01:19 PM

Really great Sualocin!  Would you mind sharing a picture of your imaging train on the back of your SCT?  Thanks.  

Lol wouldn’t that be a trade secret?



#6 Tulloch

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Posted 26 July 2021 - 05:56 PM

Truly excellent for a first go, much better than my first attempt! :)

 

A couple of pointers, you can capture at much higher gains and much faster framerates, for instance I use a gain around 280, shutter speed of 6.66ms to give me 150 fps on Jupiter, gain 370, shutter speed 10 ms to give me 100 fps on Saturn. The more frames you capture, the better stacking works and the lower the final noise. Yes, it will look quite noisy on the screen during capture, but the stacking process takes care of all that.

 

Keep posting please!

 

Andrew


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#7 Tim J Fowler

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Posted 26 July 2021 - 07:21 PM

That's really nice for a first, or any other, capture! As Ray said, the only criticism to me would be color balance, but I would be happy with the detail you have captured.

Tim


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#8 Sualocin

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Posted 27 July 2021 - 02:32 AM

Thank you KiwiRay, Tulloch and Tim J Fowler for your advices and thanks all of you for the encouragement! My Jupiter was definitively too pink, so I prepared another version: maybe still too reddish - comparing to other pics I see on CN and elsewhere - but it seemed to me that most of the data were in the red channel... Anyway, I think I need to improve the whole post processing!

Attached Thumbnails

  • RGB.jpeg

Edited by Sualocin, 27 July 2021 - 02:35 AM.

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#9 Sualocin

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Posted 28 July 2021 - 05:47 AM

Really great Sualocin!  Would you mind sharing a picture of your imaging train on the back of your SCT?  Thanks.  

Sure, here it is

Attached Thumbnails

  • IMG_20210727_211713 (2).jpg


#10 moonwatching ferret

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Posted 28 July 2021 - 06:26 AM

that Jupiter blows away many from my ten foot long 16 incher



#11 Sualocin

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Posted 28 July 2021 - 08:14 AM

Yesterday I worked on another set of RGB frames taken the same night, with a 33.3ms exposure. I paid more attention to the color balance, thanks to your advices, but I guess I should better study post-processing techniques.

Next time I will try different exp./gain settings, as well as a Luminance filter.

Attached Thumbnails

  • Jupiter 23 July.jpg

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#12 happylimpet

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Posted 28 July 2021 - 08:28 AM

Those are absurdly good first images. Well done!



#13 KiwiRay

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Posted 28 July 2021 - 01:30 PM

That new image is first class - well done!

 

Ray



#14 Googaliser

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Posted 01 August 2021 - 12:59 AM

Amazing image - congratulations !




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