Antares to M4 nebulosities
with 10" f/2.9 Astrograph
Uploaded 6/11/23

 
This
            week I would like to share with you our first official posting
            of a color image with our new Starizona Nexus 0.75x Coma corrector,
            and our 10 inch f/3.9 and Atik 16200 CCD here in Arizona. It
            is a one hour RGB set with an effective focal ratio of f/2.9
            and a field of 2.5 degrees. The Nexus is only designed to cover
            APS size chips, but by extremely accurate collimation of the
            10 inch, we were able to successfully cover the full 36mm diagonal.
            The subject of course is Antares with its yellow reflection nebula,
            M4, NGC6144, and loads of background dust everywhere. We look
            forward in the future of sharing more work with this amazing
            accessory, and perhaps encourage some of you to take a close
            look at this product. Thanks for looking!

            
Select an image size for a larger view:

1600 x 1200


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Nexus 0.75x CC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI120  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  60m
Astronomik  RGB Combine Ratio:  1: .9: 1.5
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  45 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Production finishing: Photoshop CS2

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