NGC 7793 - going deep, 67 hours so far

[g__day (Matthew)]

So I am creating a deep LRGB data set from my Bortle 6 skies using 5 minutes subs mostly on my Williams Optics 132mm FLT - mainly to see how my PI based processing improves over time.

I might take it to 100 hours and re-process the data every 3-6 months - just to see if / how my skill changes with time.

I wanted to see what can having more data and skill do against location and gear limitations!

[Dave882 (David)]

Wow mate that's super deep - some real beautiful detail that you don't normally see. My suggestion would be to go really light on the processing (both colour and stretching) as with that much data you have the unique ability to get that elusive detail and still look very natural. I'd love to see a higher res version too!

[Leo.G (Leo)]

That's beautiful Matthew!
I must really see if any of these nebulae are available to capture form my local. Trees and mountains mean I usually only get to capture objects directly overhead but one day I'll head to a friends place where the trees and mountains don't obstruct my access and see if I can get anything worthwhile. Anything 100th of the quality of what others capture here, detail and sharpness will be a win in my books.

[alpal]

Hi Matthew,
it's good except the black background is at a level of zero out of 255 bits
when a level of between 20 and 30 bits would be more correct.
It means the blacks are clipped in your image.

cheers
Allan

[g__day (Matthew)]

Thanks all - still very much in learning stage - and I totally agree about novice type over-processing; that will come with experience not too over do the blackpoint and use gentle touches on the nebulae.

[Leo.G (Leo)]

That looks amazing Matthew!

[alpal]

Originally Posted by g__day

Thanks all - still very much in learning stage - and I totally agree about novice type over-processing; that will come with experience not too over do the blackpoint and use gentle touches on the nebulae.

Hi Matthew,
You have the most important thing -
67 hours of valuable data -
you can re-process it anytime you want to - even years from now.

cheers
Allan

[g__day (Matthew)]

Hi Allan,


That is my intent! I tried a higher blackpoint of the Master RGB - the nebulae shows detail but the sky is more reddy brown - which is the way most astrophotographers feel it should look - versus inky black.

I get it - but somehow from Lost in Space to Star Wars - I am still conditioned to expect space to be jet black - it's a brain wiring thing I guess. I must remember to not over do it!

Matthew

[alpal]

Originally Posted by g__day

Hi Allan,


That is my intent! I tried a higher blackpoint of the Master RGB - the nebulae shows detail but the sky is more reddy brown - which is the way most astrophotographers feel it should look - versus inky black.

I get it - but somehow from Lost in Space to Star Wars - I am still conditioned to expect space to be jet black - it's a brain wiring thing I guess. I must remember to not over do it!

Matthew

Hi Matthew,
I don't have PixInsight.

For stretching -
you might like to try the free NASA FITS Liberator as per my post 13-08-2024, 02:06 PM here:
https://www.iceinspace.com.au/forum/....php?p=1615328

cheers
Allan