The Tulip Nebula in Cygnus - Sharpless 2-101
with 10" f/3.9 Astrograph
Uploaded 10/14/20

 
This
            nebulous regio near Alberio in the Swan is highlighted by a huge
            number of yellowish dust dimmed stars, much background nebulosity
            and the central D shaped object - the Tulip Nebula. With a size
            of 21 mins long, this is a moderately large object, however combined
            with the background glow, fits well in this 1.5 degree wide field.
            This is a 2h 15 min total integration time, consisting of RGB
            data plus OIII and Halpha data added.

            
Select an image size for a larger view:

1400 x 1290

Instrument:  10" f/3.9 Orion Astrograph Newtonian with Baader MPCC
Mount:  Astrophysics 1200 QMD
Camera:  ZWO ASI071MC Pro Color CMOS
Guider: ZWO ASI mini  w/80mm piggyback refractor
Exposure:  135m
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 2 arcsec , Transparency 9/10
Outside Temperature:  45 F

Image Processing Tools: 
Maxim DL6:  Calibration, Color Conversion, aligning, stacking
PixInsight:  Saturation Curves
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

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