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Contains:  IC 1318, NGC 6910, The star Sadr (γCyg), gamma Cyg nebula
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Gamma Cygni Nebula (IC1318) in H-alpha, 



    
        

            JDJ
Gamma Cygni Nebula (IC1318) in H-alpha
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Gamma Cygni Nebula (IC1318) in H-alpha

Technical card


Dates:Oct. 14, 2019Oct. 15, 2019

Frames:Optolong L-eNhance 2": 40x360" ISO400

Integration: 4.0 hours

Darks: ~25

Flats: ~15

Bias: ~25

Avg. Moon age: 15.78 days

Avg. Moon phase: 98.59%


Basic astrometry details

Astrometry.net job: 3043735

RA center: 20h 25' 26"

DEC center: +40° 17' 56"

Pixel scale: 2.082 arcsec/pixel

Orientation: 274.290 degrees

Field radius: 1.972 degrees


Resolution: 5702x3738

Locations: Home, Silver Spring, Maryland, United States

Data source: Backyard

Description

Continuing my tour of the Cyngus region this fall, here is a narrowband H-alpha image of the Gamma Cygni Nebula (IC1318). The bright star is Sadr.

Imaged with WO GT81 at F4.7 (382 mm focal length) using Flat6A II field flattener/0.8x reducer, Optolong L-Enhance dual narrowband filter, and full spectrum modified Nikon D5300.

Pre-processed using PixInsight Batch Pre-Processing (BPP) script. Images calibrated using darks, bias, and flats. Extracted red/green/blue channels using BatchChannelExtraction script. Registered and stacked using StarAlighment and Integration. Total integration time of ~4 hours using 40 subs at ISO400x360 sec. Post-processed in Pixinsight: Cropped, gradient removal with ABE, MLT for noise reduction, stretched using STF settings in Histogram Transformation Tool, Curves Transformation, TGVDenoise for noise reduction, HDR transform, Local histogram transform.

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Author

JDJ
JDJ
License: None (All rights reserved)
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Gamma Cygni Nebula (IC1318) in H-alpha, 



    
        

            JDJ