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Old 10-02-2022, 07:18 PM
AdamJL
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Mono First Light - Carina + RGB stars

Hi all

Decided to jump into mono, and gave Carina a go first because it's nice and bright (and the Dolphin is too low to image for long periods during these cloudy conditions).
Also tried to use the mono camera and shoot RGB stars, but due to a filter wheel issue, I had to use the 2600MC (thankfully has the same sensor) instead.

Anyway, here's my first mono image. I'm more happy that it's "done" for now, and will think about if it needs re-editing later on. Learned a lot on this project, and excited to try some of the targets that will pop up in the next few months, especially the Dragons

Details for those interested

Camera: QHY268M (Ha/OIII/SII) + 2600MC (RGB stars)
Filters: Antlia 3nm pro
Scope: Esprit 120 + 0.77x reducer (might try this at 1x instead one day)

Ha: 26 x 300 seconds, Gain 56 offset 25, High Gain mode
OIII: 21 x 300 seconds, Gain 56 offset 25, High Gain mode
SII: 26 x 300 seconds, Gain 56 offset 25, High Gain mode
RGB: 86 x 60 seconds + 70 x 90 seconds, Gain 0, Offset 50

Stacked in DSS (still not sure how to stack mono in PI), edited in PixInsight
Weird colour combination, mostly SHO but also something else, but it's false colour so I thought I'd experiment and have fun.

Still have star elongation issues to sort out on the 268M, but the 2600 is very close now, maybe another 0.5mm to go. Maybe not entirely happy with the star colour and saturation (a bit blown?), but will keep working on the concept over the coming years!

Link to a larger image, warts and all

Happy for honest criticism and critique.
Thanks
Adam
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  #2  
Old 10-02-2022, 11:42 PM
AdamJL
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I'm looking at that image and not liking it at all! So ignore that image!

Now working on V2

Here's a current Starless version. The detail coming through is exciting.

Now just have to figure out how to get some decent stars back in...
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  #3  
Old 12-02-2022, 11:02 AM
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Andy01 (Andy)
My God it's full of stars

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Nice result, well done
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  #4  
Old 19-02-2022, 06:46 PM
AdamJL
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Thanks Andy
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  #5  
Old 19-02-2022, 07:39 PM
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Peter Ward
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As Eta's go, that's not bad.....not bad at all.

Excellent dynamic range. Nicely resolved.

Brighter stars are strangely bloated...possible slight SA of the objective ....but a quibble at best.

Colours are pleasing and map the NB emissions with purpose.

Well done
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  #6  
Old 19-02-2022, 10:47 PM
Startrek (Martin)
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Adam,
A good choice of target , has everything you need to test equipment and post process
A well balanced image with nice depth and colour
Now for those stars
Well done !!
Martin
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  #7  
Old 28-02-2022, 04:08 PM
AdamJL
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Quote:
Originally Posted by Peter Ward View Post
As Eta's go, that's not bad.....not bad at all.

Excellent dynamic range. Nicely resolved.

Brighter stars are strangely bloated...possible slight SA of the objective ....but a quibble at best.

Colours are pleasing and map the NB emissions with purpose.

Well done
Thanks Peter. I guess this wasn't as bad as I thought. As for the stars, well I really don't know what's going on there
Will have to revisit this and maybe take a new batch of exposures for star detail, because I think I stuffed up along the way somewhere. Not happy with the stars on this project.
What did you mean by "SA of the objective" btw?

Quote:
Originally Posted by Startrek View Post
Adam,
A good choice of target , has everything you need to test equipment and post process
A well balanced image with nice depth and colour
Now for those stars
Well done !!
Martin
Thank you, Martin
I'll be reading up on more RGB star tutorials for sure!!
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