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ASTRO: SH2-110 in S2HaO3 @ ~ 10 hours



 
 
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  #1  
Old July 11th 08, 04:52 AM posted to alt.binaries.pictures.astro
Richard Crisp
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Default ASTRO: SH2-110 in S2HaO3 @ ~ 10 hours

I am not as happy with this as I was hoping I would be at this time. I
probably have about 10 hours exposure binned 2x2 at f/12.6

one issue is that I haven't had proper darks and have had to get by. It
makes the image a bit noisier.

another is that I have a peculiar reflection in my [OIII] flat/filter in
this scope that I have not seen in my 400mm camera lens

I suspect that there's something reflecting some light somewhere and is
better at reflecting green than red

I also have a bit of a problem with reflections in my main baffle tube. I
believe those are responsible for the large offset haloes around the bright
stars.

I changed how that was flocked during the spring and now I can see that to
get the results I want I need to further refine that.

all excuses aside here it is.

at this scale it looks better than at full rez :-)







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  #2  
Old July 11th 08, 07:37 AM posted to alt.binaries.pictures.astro
Rick Johnson[_2_]
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Posts: 3,085
Default ASTRO: SH2-110 in S2HaO3 @ ~ 10 hours



Richard Crisp wrote:
I am not as happy with this as I was hoping I would be at this time. I
probably have about 10 hours exposure binned 2x2 at f/12.6

one issue is that I haven't had proper darks and have had to get by. It
makes the image a bit noisier.

another is that I have a peculiar reflection in my [OIII] flat/filter in
this scope that I have not seen in my 400mm camera lens

I suspect that there's something reflecting some light somewhere and is
better at reflecting green than red

I also have a bit of a problem with reflections in my main baffle tube. I
believe those are responsible for the large offset haloes around the bright
stars.

I changed how that was flocked during the spring and now I can see that to
get the results I want I need to further refine that.

all excuses aside here it is.

at this scale it looks better than at full rez :-)


That's a tulip color never seen in Holland! Interesting.

Rick

--
Correct domain name is arvig and it is net not com. Prefix is correct.
Third character is a zero rather than a capital "Oh".

 




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