Re: [ap-gto] A Lovely LMC with AP 155 EDIF


Oct 10, 2010

 


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#29512 Oct 10, 2010

It's always nice to get a little clear sky down under, especially when the number of clear nights seems to be at a premium with all this global cooling going on. LOL



Anyway, back to the task at hand, I had a great string of nights a few weeks ago and tried my hand at a little HRGB.



Here's the deal:



4 hours total exposure on the eastern portion of the LMC.



1 hour each channel, H-a, R, B, G



Proline 16803 and the AstroPhysics 155 EDIF at f/5.5 with Roland's great flattener reducer optic.



The resulting exposure sets were combined in MaximDl with a Gaussian stretch appled to each after the combine.



The R and H were combined in Registar and median combined into one HR image, with 1:1 weight applied. The RH, B, and G were then RBG combined.



Color correction was applied in Photoshop. No sharpening as the image is so sharp and so full of tiny stars that it has a beachsand look at full res.



I'm quite pleased with the result. Lots of H-a across the field, with the lovely bluegreen central band. Bit of clipping in the black. A result of the Gaussian stretch.



jpgleason.zenfolio.com/img/s10/v18/p507463507.jpg



Cheers,



jg



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#29516 Oct 11, 2010

John,



Gorgeous result and, as you said, intrinsically sharp everywhere! I am

just curious how it would look if you pull back the blue just a touch so

that the emission nebulosity will be slightly a little more red.



Anthony.



O/H john gleason ......: >

>

> It's always nice to get a little clear sky down under, especially when

> the number of clear nights seems to be at a premium with all this

> global cooling going on. LOL

>

> Anyway, back to the task at hand, I had a great string of nights a few

> weeks ago and tried my hand at a little HRGB.

>

> Here's the deal:

>

> 4 hours total exposure on the eastern portion of the LMC.

>

> 1 hour each channel, H-a, R, B, G

>

> Proline 16803 and the AstroPhysics 155 EDIF at f/5.5 with Roland's

> great flattener reducer optic.

>

> The resulting exposure sets were combined in MaximDl with a Gaussian

> stretch appled to each after the combine.

>

> The R and H were combined in Registar and median combined into one HR

> image, with 1:1 weight applied. The RH, B, and G were then RBG combined.

>

> Color correction was applied in Photoshop. No sharpening as the image

> is so sharp and so full of tiny stars that it has a beachsand look at

> full res.

>

> I'm quite pleased with the result. Lots of H-a across the field, with

> the lovely bluegreen central band. Bit of clipping in the black. A

> result of the Gaussian stretch.

>

> jpgleason.zenfolio.com/img/s10/v18/p507463507.jpg

>

> Cheers,

>

> jg

>

> _



----------------------------

#29520 Oct 11, 2010

Woahhhhh.....



Regards,



Gilles



It's always nice to get a little clear sky down under, especially when the

number of clear nights seems to be at a premium with all this global

cooling going on. LOL



Anyway, back to the task at hand, I had a great string of nights a few

weeks ago and tried my hand at a little HRGB.



Here's the deal:



4 hours total exposure on the eastern portion of the LMC.



1 hour each channel, H-a, R, B, G



Proline 16803 and the AstroPhysics 155 EDIF at f/5.5 with Roland's great

flattener reducer optic.



The resulting exposure sets were combined in MaximDl with a Gaussian

stretch appled to each after the combine.



The R and H were combined in Registar and median combined into one HR

image, with 1:1 weight applied. The RH, B, and G were then RBG combined.



Color correction was applied in Photoshop. No sharpening as the image is

so sharp and so full of tiny stars that it has a beachsand look at full res.



I'm quite pleased with the result. Lots of H-a across the field, with the

lovely bluegreen central band. Bit of clipping in the black. A result of

the Gaussian stretch.



_jpgleason.zenfolio.com/img/s10/v18/p507463507.jpg_

(jpgleason.zenfolio.com/img/s10/v18/p507463507.jpg)



Cheers,



jg











[Non-text portions of this message have been removed]



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