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The Giant Squid (SH2-129) CDK14 f4.7

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#1 Rouzbeh

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Posted 29 September 2022 - 05:16 PM

The Giant Squid  (SH2-129)

 

Located in Cepheus and some 1300 light years from Earth, this object is relatively dim and proved quite challenging to image despite the faster optical setup at f/4.7 and the 3nm narrowband filters. Overall integration time was high and I would have preferred more Oiii data but the number of clear nights are limited now.

 

The Oiii is very faint and I was on the fence if I should have continued past the first night.

Overall some 33 hours @ f/4.7 and 3x down sampling (quite a fast combo).

 

 

 

Link:

https://www.astrobin.com/j9sy33/

 

 

 

Attached Thumbnails

  • SH2-129 Rouz- CN.jpg

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#2 Rouzbeh

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Posted 29 September 2022 - 05:18 PM

Shown here is Ha-OO mapped to RGB with a slightly modified expression:

 

R: Ha
G: ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii
B: Oiii

 

Below is a starless version emphasizing the nebulosity:

 

 

Attached Thumbnails

  • Starless CN.jpg

Edited by Rouzbeh, 29 September 2022 - 05:26 PM.

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#3 hornjs

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Posted 29 September 2022 - 05:25 PM

Absolutely fantastic!!

 

Would love to see the starless version as well. 


Edited by hornjs, 29 September 2022 - 05:26 PM.

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#4 Rouzbeh

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Posted 29 September 2022 - 05:27 PM

Absolutely fantastic!!

 

Would love to see the starless version as well. 

Thank you!

Sorry, attached the wring file, starless updated.

CS

Rouz


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#5 lucam

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Posted 29 September 2022 - 05:29 PM

Great work, Rouz! The resolution in the bow shock on the Southern tip is fantastic. See this morphological study for comparison (see Figure 6 in particular):

 

https://arxiv.org/pdf/1407.4617.pdf

 

Luca


Edited by lucam, 29 September 2022 - 05:31 PM.

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#6 BKMaynard

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Posted 29 September 2022 - 05:34 PM

Send it to NASA, that'll make a great APOD


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#7 Rouzbeh

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Posted 29 September 2022 - 05:44 PM

Great work, Rouz! The resolution in the bow shock on the Southern tip is fantastic. See this morphological study for comparison (see Figure 6 in particular):

 

https://arxiv.org/pdf/1407.4617.pdf

 

Luca

Thank you Luca, glad you liked it.

Interesting paper, quite scientific, good to learn something!

 

Rouz



#8 Rouzbeh

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Posted 29 September 2022 - 05:45 PM

Send it to NASA, that'll make a great APOD

Thank you for your vote of confidence, Good idea, I'll send it to them!

CS

Rouz



#9 David Rosenthal

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Posted 29 September 2022 - 05:45 PM

Just WOW


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#10 bobzeq25

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Posted 29 September 2022 - 05:51 PM

Best Squid I've ever seen.


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#11 airscottdenning

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Posted 29 September 2022 - 05:58 PM

Absolutely spectacular! What an achievement. Congratulations.


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#12 tkottary

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Posted 29 September 2022 - 06:03 PM

One of the finest squid image . Wow
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#13 ram812

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Posted 29 September 2022 - 06:13 PM

One of the toughest target signals to capture. Outstanding! Surely the finest one I've seen yet.👍

Thanks for sharing, as always....CS,Ralph😁
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#14 Astro_Kennedy

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Posted 29 September 2022 - 06:32 PM

That is absolutely fantastic, I've read posts on various forums talking about how faint this object is, and the challenge involved capturing the OIII data - amazing work.



#15 wb6pco

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Posted 29 September 2022 - 10:03 PM

Gorgeous image. The detail in the Squid is amazing!


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#16 mayhem13

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Posted 29 September 2022 - 10:22 PM

Simply…..WOW!


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#17 Dangerdan

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Posted 29 September 2022 - 10:54 PM

I've heard of it, never seen a picture of it, but that is really an intriguing  and outstanding capture!


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#18 Rouzbeh

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Posted 29 September 2022 - 11:57 PM

Just WOW


Sent from my iPhone using Tapatalk

Thanks David!



#19 Rouzbeh

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Posted 29 September 2022 - 11:59 PM

Best Squid I've ever seen.

Glad you you liked it, wasn't to sure how it was going to turn out.



#20 Rouzbeh

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Posted 29 September 2022 - 11:59 PM

Absolutely spectacular! What an achievement. Congratulations.

Thank you for the kind words!



#21 Rouzbeh

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Posted 30 September 2022 - 12:06 AM

One of the finest squid image . Wow

Thank you for the vote of confidence!

 

 

One of the toughest target signals to capture. Outstanding! Surely the finest one I've seen yet.

Thanks for sharing, as always....CS,Ralph

Thank you Ralph for the kind words.

It was probably the most challenging target yet!

CS

Rouz

 

 

 

That is absolutely fantastic, I've read posts on various forums talking about how faint this object is, and the challenge involved capturing the OIII data - amazing work.

Ye that right, the Oiii data was very faint. The QHY600 is very clean and the f/4.7 helped. Down sampling 3x also boosts the SNR a lot so did the 3nm filters.

 

Gorgeous image. The detail in the Squid is amazing!

Thank you! I was hoping to get a sharper image but that would probably take twice as long!

 

 

I've heard of it, never seen a picture of it, but that is really an intriguing  and outstanding capture!

Thanks, it was my first time imaging SH2-129. Interesting indeed!



#22 Mert

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Posted 30 September 2022 - 02:03 AM

That's certainly the best image of the squid I've seen until now!

Great detail and what a wealth of signal strength!

The bow shock on the southern tip is clearly visible!

Great image!!!



#23 DRK73

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Posted 30 September 2022 - 07:23 AM

Shown here is Ha-OO mapped to RGB with a slightly modified expression:

 

R: Ha
G: ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii
B: Oiii

 

Below is a starless version emphasizing the nebulosity:

Beautiful image! Could you explain what's going on in your G channel? Not knowing any better, I would have just mapped Oiii to Green as well...



#24 rodmichael

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Posted 30 September 2022 - 09:37 AM

Amazing, Rouzbeh. Your Summer must have been very satisfying with the new CDK14.

 

CS, Rod Michael



#25 Rouzbeh

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Posted 30 September 2022 - 10:04 AM

Beautiful image! Could you explain what's going on in your G channel? Not knowing any better, I would have just mapped Oiii to Green as well...

Thanks Dan.

This variant of green is a bit more blue and I noticed the stars looked a bit better.

The difference is minimal and HOO would be similar.

CS

Rouz


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