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Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing

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bunyon
Post Laureate
*****

Reged: 10/23/10

Loc: Winston-Salem, NC
Pleiades and Rossette new
      #5657712 - 02/02/13 08:52 AM

It wasn't a bad night but clouds rolled in and cut me off on the Rosette, but I'm happy with how these turned out.

Cheers.






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jambroseus
professor emeritus


Reged: 04/05/07

Loc: Mount Laurel, New Jersey
Re: Pleiades and Rossette new [Re: bunyon]
      #5657849 - 02/02/13 10:16 AM

Good Rose, sharp focus and great depth. M45 seems a bit off in color. Did you neutralize the background in these?

Give us some details...

John


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bunyon
Post Laureate
*****

Reged: 10/23/10

Loc: Winston-Salem, NC
Re: Pleiades and Rossette new [Re: jambroseus]
      #5658061 - 02/02/13 12:42 PM

On this computer it looks a little red. That's what I get for late night processing.

Details are on the astrobin site. No color correction was made except by eye as I processed. I really should shoot a gray card with the modded cam.


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terry59
Post Laureate
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Reged: 07/18/11

Loc: Colorado, USA
Re: Pleiades and Rossette new [Re: bunyon]
      #5658807 - 02/02/13 07:50 PM Attachment (7 downloads)

Quote:

On this computer it looks a little red. That's what I get for late night processing.

Details are on the astrobin site. No color correction was made except by eye as I processed. I really should shoot a gray card with the modded cam.




Start by aligning the R, G and B channels

Edited by terry59 (02/02/13 07:57 PM)


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bunyon
Post Laureate
*****

Reged: 10/23/10

Loc: Winston-Salem, NC
Re: Pleiades and Rossette new [Re: terry59]
      #5658929 - 02/02/13 09:06 PM

Terry, what software do you use to do that? I'm playing with channels in photoshop but I can't tell they're off - for what it's worth, the shorttube I image with focuses R and B at very different places.

Here is a revision which is much more blue and I've done a star reduction.



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carlstronomy
super member


Reged: 06/03/12

Loc: Brisbane, QLD, Australia
Re: Pleiades and Rossette [Re: bunyon]
      #5658944 - 02/02/13 09:19 PM

Paul nice images, Rossette looks mighty fine and the re process on the colours for Pleides looks much better,

Carl


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NeilMac
Carpal Tunnel


Reged: 09/25/10

Loc: MedHat, AB, Canada
Re: Pleiades and Rossette new [Re: carlstronomy]
      #5659126 - 02/02/13 11:35 PM

What EP/magnification is being used for these pics?

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terry59
Post Laureate
*****

Reged: 07/18/11

Loc: Colorado, USA
Re: Pleiades and Rossette new [Re: bunyon]
      #5659470 - 02/03/13 07:44 AM

I ran a Dynamic Bakground Extraction on it using PixInsight

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bunyon
Post Laureate
*****

Reged: 10/23/10

Loc: Winston-Salem, NC
Re: Pleiades and Rossette new [Re: terry59]
      #5659519 - 02/03/13 08:44 AM

I need to get PixInsight. Seems the answer to every other question I ask lately. Thanks.


NeilMac: both images are prime focus (f/5) with an Orion short tube. No eyepieces or other mag. The st80 is 400mm focal length, 80mm aperture.


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SKYGZR
scholastic sledgehammer
*****

Reged: 08/14/09

Loc: Planet Earth, Milky Way Galaxy...
Re: Pleiades and Rossette new [Re: bunyon]
      #5661020 - 02/04/13 01:04 AM

A minus violet filter may help when using the ST80. (not the best little refractor for AP), better for guiding. An AT 72 will be better color corrected.

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darbyvet
scholastic sledgehammer


Reged: 10/19/10

Loc: Seneca Falls, New York
Re: Pleiades and Rossette new [Re: bunyon]
      #5661437 - 02/04/13 10:18 AM Attachment (4 downloads)

Quote:

On this computer it looks a little red. That's what I get for late night processing.

Details are on the astrobin site. No color correction was made except by eye as I processed. I really should shoot a gray card with the modded cam.




I had a terrible time trying to get the red out of my m45 until I used a grey card shot to balance my modded camera. After applying the custom white balance I could finally get some blue.You can correct the color balance in your image after the fact by using a grey card photo and PS.


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