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IC405 without colors

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#1 tommymark

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Posted 10 March 2019 - 10:28 AM

Hi everyone,

 

I hope I can collect a bit of RGB too... but the weather... so just simple plain H-alpha.

 

I still like the ASI183, I just need more clear skies for the small pixels grin.gif

I have a feeling I could collect more photons to get better details in the outer parts. But did I mention the weather?

 

40327648673_c34ced6c04_b.jpg

IC 405 (Flaming-Star-Nebula) by TommyMarkus, on Flickr

 

CS

Thomas


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#2 BenKolt

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Posted 10 March 2019 - 03:08 PM

That's beautifully done.  I do hope you get the chance to add color soon.  But your monochrome rendering certainly brings out the unique ripples of this nebula.

 

Ben



#3 tommymark

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Posted 15 March 2019 - 03:53 PM

Thank you Ben.

 

I tried, but unfortunately a "small" problem came up. I managed to take new blue subs but after integration the stars were just a little bit smaller. Actually this was the first time I took RGB subs with my little scope and the reducer: this was mainly my "large emmision nebula setup". Looks to me that I ran into the classic blue bloat problem: I use Baader filters and the blue cuts off somwhere at ~380nm. That's probably to much (or less...) for my scope.


I'm not sure if I end this litte RGB experiment or try an other blue fliter. The Astronomik deep sky blue filter seems to fit better (cut of at ~420nm), but the filter is 1mm thick. This would change my backfocus because the Baaders are 2mm thick. Hmmm.

 

CS

Thomas




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