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Sh2-126 - huge, faint, and underrated

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#1 gatsbyiv

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Posted 16 September 2020 - 08:06 AM

I haven't posted an image on here is a long time, but I thought this one was interesting enough to warrant it.  This is Sh2-126, a huge and faint nebula in Lacerta.  The field of view here is 6x7 degrees, and it barely fits.  That probably explains why it isn't imaged often.  This image is Ha+LRGB.  The L was used to bring out the faint molecular clouds in the foreground.  Someone with darker skies than mine could probably bring them out a lot more.  Total exposure time is 8h 23m, with just over 6 hours of H-alpha.  All of this was at f/2.8, indicating just how faint it is.

 

Personally, I think it looks like a big (scarlet) letter A.  This is an underrated object, and a great use of the excellent Rokinon/Samyang 135 mm lens.  

 

A full-sized version, a starless H-alpha version, and technical details are at https://digitalstars...arlet-letter-a/

Attached Thumbnails

  • Sh2-126 Charles Bracken 25pct.jpg

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#2 vakulenko_sergiy

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Posted 16 September 2020 - 08:47 AM

Great image! Interesting combination of dust and Ha emission.

 

Indeed SH2-129 is not popular target. I imaged it with 135 mm lens in Ha only, but now I see that was a wrong decision, L channel bring great dust nebulosity into the picture.



#3 Gipht

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Posted 16 September 2020 - 09:18 AM

Very beautiful image!  You should post more.  To me this also looks like the  symbol for pi, or even an extracted molar.



#4 gatsbyiv

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Posted 16 September 2020 - 10:04 AM

...or even an extracted molar.

I can see it now in future atlases:  "The Extracted Molar Nebula."  smile.gif



#5 Mert

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Posted 16 September 2020 - 12:24 PM

Absolutely impressive image, great job.

#6 H-Alfa

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Posted 16 September 2020 - 12:52 PM

Great target and result. Thanks for sharing!

Enviado desde mi Mi 9 Lite mediante Tapatalk

#7 Jim Thommes

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Posted 16 September 2020 - 01:39 PM

Great image Charlie! I like the way you blended the Ha and Lum to bring out the dust. Well done.

 

Sharpless has the diameter as 160 arcmin and Lynds has it at 110x30. They seem to refer to the core area, but you captured the faint nebulosity in the surrounding area. I don't think I have seen a wide field composition like this (other than DSS images). Even in the DSS images, the faint surrounding nebulosity does not stand out well.

 

Bravo.



#8 PhotonHunter1

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Posted 18 September 2020 - 08:41 AM

Wonderful target, I know I’ve never seen an image of it before, let alone even knew it existed. Great job in the capture and processing!



#9 lucam

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Posted 18 September 2020 - 09:32 AM

That's a great image! I see the gecko nebula (LBN-437) as part of this large complex nebula. Thanks for posting!



#10 R Botero

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Posted 19 September 2020 - 02:47 AM

Great image of a rare object. cool.gif bow.gif  It’s huge. 

 

Roberto



#11 Chanctonbury

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Posted 19 September 2020 - 06:14 AM

Very nice indeed and a relatively large field of view too.



#12 outters

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Posted 19 September 2020 - 10:29 AM

impressive size and nice nebulae, I didn't know it. Thank to share it.




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