Sharpless 140 in Cepheus
with 10" f/3.9 Astrograph
Uploaded 12/15/23

 
Here
            is Sharpless 2-140,a very seldom imaged nebulosity in the constellation
            of Cepheus. The field here is about a degree and a half, and
            is centered on a V shaped cluster of hot blue stars which illuminate
            this region. It is a very peculiar looking object indeed - The
            mix of blue and yellow dust with the reds and pinks makes for
            quite a color play in this image. Look to the lower left along
            the bottom and you will see a tiny blue reflection nebula. This
            is DG183/LBN508. The huge contorted cloud to the upper left is
            Sh2-145 and has some dark lanes and globules within. All stars
            are G2V calibrated. Technical Data:10" f/3.9 GSO astrograph
            + MPCC,Atik 16200 CCD,7h total.

            
Select an image size for a larger view:

1600 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI290  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  7 hours HaRGB
Astronomik  RGB Combine Ratio:  1: 1.05: 1.5
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 3 arcsec , Transparency 9/10
Outside Temperature:  35 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL6:  Calibration, PixInsight:  All Remaining processing, Photoshop CS2: Production finishing 

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