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Squid nebulae or OU4 with my 16" Newton

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#1 outters

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Posted 14 August 2015 - 09:45 AM

Hi all,

 

I had discovered this nebuae since 4 years with my FSQ106 and a SBIG STL6303 and 4 years after with my new biggest toy I will try again this mystery nebuae witch is always non resolved by researchers.

http://adsabs.harvar...RMxAA..48..223A

https://hal.archives...fr/hal-01022286

 

 

Takes patience to get out of such a thing, I think it is above all this which pays!
42 hours with 3 nm OIII filters, RGB and H-alpha 5nm all in 1x1 binning to F3,8.

The Newton with its SkyVision mirror made its job perfectly.
I wanted this more natural final image possible with a tendency to dominate the OIII layer with 107x10 minutes F3,8.

I assembled side processing for luminance the OIII and H-alpha with the script of Laurent Bourgon (Pixinsight Scripts). And always with the same script I assembled my color with:
- Red = H-alpha
- Green = OIII
- Blue = OIII

I then added the RGB channel to compose the color of the stars and part of the sky background in Photoshop with a layer to "color" mode over the other.

The system works well and should serve me for future compositions Ha / OIII / OIII / RGB.
The result is quite attractive I must say.

With theprocess we quickly is "eaten" by the H-alpha  and the difficulty was to find a balance with the OIII layer that was out but without artificial. I let you judge, I hope I have my challenge :)

 

Technical data :

Object: OU4
Common name: The Squid nebulae
Date: 11-07-2015 to 7-08-2015 images
Optics: Newton SV400 F3,8
Mount Paramount ME Number 1
Location: Orange observatory
Seeing: FWHM of 1.88 to 3.57
CCD: Moravian G4
filter wheel: Moravian
filters: Astrodon
Ha OIII3nm RGB +
Focuser: Atlas
Guiding: Atik 314L +
Temp. out: T ° 11-28
Ccd Temp: -25 ° to -20 °

Total exposure: 42h00
while 1x1 binning
Ha 138 x 10 minutes
OIII 107 x 10 minutes
RGB 13 x 1 'x 3

Acquisitions: Maxpilote
Sorting: Maxselector
Pretreatment: PixInsight
PixInsight and Photoshop

 

Situation of OU4 :
http://www.outters.f....Ou4-aladin.jpg

 

Links :
Zoomify of OU4 and link for webpage : http://www.outters.f....-Moravian.html

 

Full : http://www.outters.f...a-OIII-rvb6.jpg

 

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

 

Clic on the picture for the full frame (be carefull it is 17 Mo)
Nicolas Outters
Ou4-Ha-OIII-coul6-30.jpg



#2 psandelle

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Posted 14 August 2015 - 09:56 AM

Very cool! Very squidy! Nicely done!

 

Paul



#3 Footbag

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Posted 14 August 2015 - 11:14 AM

Amazing image!  Thanks for bringing this object to our attention...  Well, everyone's attention. 



#4 dan17

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Posted 14 August 2015 - 12:04 PM

Incredible image. Congratulations on discovery :)



#5 dr.who

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Posted 14 August 2015 - 02:13 PM

Wow! That is amazing!

#6 vpcirc

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Posted 14 August 2015 - 02:26 PM

Way cool!

#7 Jeff2011

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Posted 14 August 2015 - 02:52 PM

An awesome revisit of your discovery Nicolas and we are so fortunate to have you posting here on Cloudy Nights. :bow:



#8 Rick J

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Posted 14 August 2015 - 04:10 PM

Beautiful.  This is amateur imaging at its best!

 

Rick



#9 WesC

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Posted 14 August 2015 - 05:34 PM

42 hours of capture! Awesome, and beautiful! :waytogo:



#10 Alterf

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Posted 14 August 2015 - 10:23 PM

Excellent!  Thanks for letting us look at this.  I really like how you've combined the narrowband and RGB.  Congrats!

 

Thanks also for posting the 100% frame.

 

Val



#11 David Ault

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Posted 14 August 2015 - 11:39 PM

Your original image was great, but this new version is just fantastic!

 

Regards,
David



#12 Nicola

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Posted 15 August 2015 - 04:52 AM

Very good resolution Nicolas



#13 schmeah

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Posted 15 August 2015 - 01:32 PM

Wonderful! Keeps getting better. Stunnung image.



#14 ollypenrice

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Posted 15 August 2015 - 02:28 PM

Very few amateur imagers have done anything so remarkable. World class.

Olly



#15 outters

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Posted 15 August 2015 - 02:32 PM

Thanks to everybody for your kind words.

I am very happy with the result and this discover is a real pleasure to redo 4 years after.

 

It is a good finish for it....let's go for the next target :)



#16 josh smith

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Posted 15 August 2015 - 03:13 PM

Excellent!! Can't wait for more. :)

#17 Guest7564635

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Posted 17 August 2015 - 08:18 AM

Incredible image. :waytogo: :bow:



#18 reiner

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Posted 17 August 2015 - 08:39 AM

Outters 4 by the master himself :grin: !  This is a remarkable image, Nicolas!

 

I am still working hard on getting anything visually of this peculiar object, but this is a real challenge. Sometimes some very, very vague impressions of the brightest filaments, but nothing conclusive. But it will keep on  trying and Ou 4 is always on my list :-)


Edited by reiner, 17 August 2015 - 08:40 AM.


#19 shawnhar

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Posted 17 August 2015 - 09:30 PM

Amazing work, very nicely done!



#20 GB_10D

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Posted 18 August 2015 - 10:13 AM

Hi Nicolas,

 

Very, very impressiv.

 

It is good to see that there is still stuff out there to be discovered by ambitious and dedicated amateurs.

 

Best regards,

Gerhard

 



#21 pesa

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Posted 18 August 2015 - 04:35 PM

awesome, respect!



#22 outters

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Posted 19 August 2015 - 01:07 AM

Thanks to all.

Reiner : visual observing to OU4 is challenging, I imagine the difficulty when I can see the sub frame !!!



#23 elbee

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Posted 19 August 2015 - 01:37 AM

Very nice result, Nicolas!!

 

I have to admit seeing my version of Ou4 displaced as the "headliner" image on your website was a mild disappointment but yours is a most worthy replacement. :-)



#24 Michael Deger

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Posted 20 August 2015 - 02:36 AM

Hi Nicolas,

 

really excellent. Very cool object.

 

All the best

Michael

 

http://www.galaxyphoto.de



#25 Lionel M

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Posted 21 August 2015 - 10:09 AM

Salut Nico,

 

T'es trop fort !

C'est bien du filer du boulot aux chercheurs !

 

Nice image !

 

lionel




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