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No-filter Simeis 147 (Spaghetti Nebula) from Bortle 6/7 skies

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#1 alan.dang

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Posted 18 December 2020 - 11:35 PM

6.7 hours of exposure from light polluted skies just to get a glimpse of this.

30 seconds unguided subs.

ISO 1250

EOS Ra with VSD100.

No filter.

 

This is definitely something that would benefits from narrowband imaging and auto-guiding (or mount with absolute encoders)...

 

Simeis147-Final Small.jpg


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#2 otocycle

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Posted 18 December 2020 - 11:41 PM

Difficult object with light pollution...well done !


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#3 alan.dang

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Posted 18 December 2020 - 11:45 PM

Here is one with a very aggressive noise reduction.

 

This is definitely one of those times I just wanted to see if it could be done as opposed to should be done.  I imagine it is hard for any unfiltered OSC even from Bortle 1 skies due to the vast number of stars. 
 

That was just with flats and bias.  I didn’t have time to take any darks.

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#4 hyperhugs

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Posted 19 December 2020 - 12:43 PM

Thank you for this post! I found this nebula randomly while scanning around Stellarium one day, and I couldn't for the life of me--either through Stellarium or by googling--find what it was called. Now I know it's name! I'm glad to hear it's a challenge--it's on my short list for this winter. Great picture!



#5 alan.dang

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Posted 19 December 2020 - 12:53 PM

It’s a much harder challenge for broadband color but it is inspiring to think of all the stars that can be found amongst the remnants of a dead star...

Narrowband makes it much more feasible but it is a dim target for sure!


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