Propeller Nebula (DWB111, Simeis 57)
with NEXUS coma corrector
with 10" f/3.9 Astrograph @ f/2.9
Uploaded 11/6/24

 
Here
            is DWB111 the Propeller Nebula in Cygnus. The inner spiral has
            intricate details in its arms, and a deceidedly pinkish coloration
            compared to the general web of background nebulosity. Technical
            Data: 10" f/2.8 astrograph, Atik 16200 CCD, HaRGB = 5.6
            hours total, Payson, Az.

            
Select an image size for a larger view:

1400 x 1290


Instrument:  10" f/3.9 Orion Astrograph Newtonian with Nexus 0.75x CC
Mount:  Astrophysics 1200 QMD
CCD Camera:  ATIK 16200 
Guider: ASI290  w/80mm WO Zenithstar 81 piggyback refractor
Exposure:  5.6h  HaRGB
Astronomik  RGB Combine Ratio:  1: .9: 1.6 = G2V  calibrated
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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