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Contains:  Crescent Nebula, IC 4996, NGC 6871, NGC 6888, The star 27Cyg, The star 28Cyg, The star 29Cyg, The star 34Cyg, The star 36Cyg
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Crescent and surrounding Nebulae

Technical card



Basic astrometry details

Astrometry.net job: 3626298

RA center: 20h 11' 52"

DEC center: +38° 21' 46"

Pixel scale: 7.201 arcsec/pixel

Orientation: 100.341 degrees

Field radius: 3.344 degrees


Resolution: 2622x2076

Locations: Home Observatory, SE London, Kent, United Kingdom

Data source: Backyard

Description

Taken over 2 short nights during nautical twilight in SE London.
SHO palette with added RGB stars

Atik 460EX, Samyang 135mm F2 lens @ F2.8
Guided on HEQ5
Ha 15 x 600secs (2 1/2 hours)
Oiii 7 x 600 secs (1 hour 10 mins)
Sii 8 x 600secs (1 hour 20mins)
RGB 3 x 150secs Each 22.5 mins

Total 5 hours 22.5 mins

Comments

Author

carastro
Carastro
License: None (All rights reserved)
3073
Like

Revisions

B

Description: Gradient improved

Sky plot

Sky plot

Histogram

Crescent and surrounding Nebulae, 



    
        

            Carastro