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Squid nebulae or OU4 with my 16" Newton

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#26 ToolMayNARD

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Posted 21 August 2015 - 10:47 AM

Fantastic image, Nicolas!

 

Nicolas, is the single calibrated OIII a single frame?!? or is it instead the stack of 107 x 10 minutes? I mean this: 

 

 

 

Single calibrated OIII frame : http://www.outters.f.../Ou4-OIII-1.jpg

 

 

 

 

I tried it under urban sky with an Epsilon 130 F/3.3 paired with a KAF8300 and 3nm Astrodon OIII narrowband filter, 30' subframe . There is just a hint of the OIII shell!!! I collected 4 hours but probably I would need at least 16 hours to get a decent SNR  :gottahurt:

 

Bests

 

Mauro


Edited by ToolMayNARD, 21 August 2015 - 10:49 AM.


#27 outters

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Posted 21 August 2015 - 02:07 PM

Hi Mauro,

 

Sorry for the mistake, it is stack OIII of OU4.

Single is more more invisible :)



#28 JJK

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Posted 21 August 2015 - 02:32 PM

Nice job!



#29 Strongmanmike

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Posted 22 August 2015 - 04:49 AM

Excellent Nic, that's a beauty of an object, the shape of the OIII bubble is amazing, great result  :waytogo:

 

Mike



#30 outters

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Posted 22 August 2015 - 06:15 AM

Thanks Mike !



#31 JWalk

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Posted 22 August 2015 - 06:49 AM

Very Cool!



#32 ToolMayNARD

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Posted 22 August 2015 - 08:46 AM

Hi Mauro,

 

Sorry for the mistake, it is stack OIII of OU4.

Single is more more invisible :)

 

That is good news!  :waytogo:

 

I was concerned about difference in SNR between that image and my single frame. I found then on your web page one single OIII frame and now I understand better, difference are as expected.

My sky is awful  :(



#33 outters

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Posted 22 August 2015 - 11:09 AM

Thanks Jimmy.

Mauro : you can see the single calibrated frame here and can compare with your version :)

 

http://outters.fr/im...4-029o3_cal.jpg




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