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From Rho to Zeta Ophiuchi and the Galactic Center

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#1 srosenfraz

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Posted 14 August 2014 - 10:43 PM

From the center of our Milky Way Galaxy in Sagittarius through the constellations of Scorpius and Ophiuchus, this southern field of view contains an assemblage of some of the most colorful nebulae in the sky:

 

ZetaOph-50-6D-NoFilt-200-2014-0504-0620-

 

High Resolution Version, Annotated Version and more image information available at http://www.astronome....php?c=17&p=540.

 

This image was captured with a Hutech modified Canon 6D using an 50mm f/1.8 Olympus Zuiko prime lens at f/4. The camera and lens were piggybacked on a Celestron C-8 guiding with a Lodestar autoguider using Phd Guiding. The image is made from 55 RGB subs of 600 sec @ ISO 200 (9+ hours) plus 47 subs of 600 sec @ ISO 1600 (8 hours) using an Astronomik 6nm Ha full frame clip filter (17 hours total exposure time).

 

Thanks for looking!


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#2 Tassydevil

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Posted 15 August 2014 - 12:12 AM

That is pretty sweet :waytogo:



#3 Jerry Lodriguss

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Posted 15 August 2014 - 01:37 AM

Hi Scott,

 

That is really nice!

 

Jerry



#4 fco_star

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Posted 15 August 2014 - 06:24 AM

Amazing image Scott!  :bow: :bow: :bow:

 

Francisco



#5 dc_robert

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Posted 15 August 2014 - 08:52 AM

FANTASTIC image!  It shows how colorful the night sky really is.



#6 mikewayne3

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Posted 15 August 2014 - 09:36 AM

:jawdrop:  WoW :drool5:

 

:waytogo:

 

GREAT IMAGE!!!!



#7 AstroScience

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Posted 15 August 2014 - 10:04 AM

Scott, what can I say? I have a weak spot for widefield imaging, it's beautiful. Well framed and processed, great image!



#8 SunBlack

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Posted 15 August 2014 - 10:47 AM

Exc++



#9 zjc26138

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Posted 15 August 2014 - 11:04 AM

Awesome image Scott!



#10 G. Hatfield

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Posted 15 August 2014 - 11:48 AM

Yes, another great image Scott!  No substitute for exposure time.

 

Have you had an problems with the Ha areas taking on a bluish tint?  It is probably my processing, but images from my modified 6D typically have a less red and more blueish color for the emission nebula.  

 

George 



#11 bouffetout

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Posted 15 August 2014 - 03:03 PM

Congratulations !!!   It's a fantastic shot !!!



#12 astrovirus

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Posted 15 August 2014 - 03:34 PM

That's another stunning result Scott.



#13 SKYGZR

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Posted 15 August 2014 - 04:02 PM

Outstanding...............wish I could image this region from my obsv location, yet hedge and skyglow prevent it....



#14 17.5Dob

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Posted 15 August 2014 - 04:40 PM

Since all of the other adjectives have been used, I'm going with "Incredible, breath taking ! "


Edited by 17.5Dob, 15 August 2014 - 04:41 PM.


#15 powerstroke01

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Posted 17 August 2014 - 09:14 AM

Thanks for another great background pic for my obs pc. :D



#16 srosenfraz

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Posted 17 August 2014 - 02:08 PM

Thank you very much, everyone for your very kind comments!  I was pretty excited with this image, as I was able to capture the very faint and large Ha nebula Sh2-27 (the large red "blob" towards the right side of the image - sometimes called the Zeta Ophiuchi Nebula).  Its often overlooked - probably because its huge (about 10 by 13 degrees), so you can't image it with anything less than about 135mm on a full frame camera or about 80mm on an APS-C chip.  You also almost have to use an Ha filter, as its just about invisible in the RGB only image.  Fun target, though!

 

@George - I haven't really seen any bluish tint with the 6D.  I usually use Gradient Xterminator early in my processing and typically check the "Balance Background Color" box.  Most of the time when I do this, I don't see any dramatic color casts.  With this image, its difficult to tell, because almost all of the red in the Ha comes from the narrowband data and I effectively "choose" that color when I set the Hue on the clipping mask for the lighten layer.  But, in the RGB only, the red Ha doesn't look bluish to me.  Wish I could give you a better hint.

 

@Jarrod - I'm flattered to know that one of my images has made it to the honored position of Ahwahnee Hills Observatory PC background!

 

 

 

 



#17 ScottP

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Posted 18 August 2014 - 08:33 PM

That is a drop dead GORGEOUS picture :eyecrazy: . If I am EVER able to take something even close to that quality I am going to have it professionally printed and framed and hung in my office......

 

 

:thinking: mmmmmmm..... now that I think about it... no one would ever know at my office that I didn't take that picture.... :lol: ..... NOT!!!



#18 srosenfraz

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Posted 20 August 2014 - 11:06 AM

Hee Hee - thank you very much for the high praise, Scott!



#19 Nils_Lars

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Posted 20 August 2014 - 10:08 PM

An epic shot here Scott , some serious dedication pays off once again for you.








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