Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888
NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7), 



    
        

            Mike Oates
NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7)
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NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7)

NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7), 



    
        

            Mike Oates
NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7)
Powered byPixInsight

NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7)

Acquisition details

Dates:
May 21, 2019
Frames:
Astrodon 3nm OIII: 15×600(2h 30′) bin 2×2
Astrodon 3nm OIII: 8×120(16′) bin 4×4
Astrodon 3nm OIII: 6×180(18′) bin 4×4
Astrodon 3nm OIII: 1×300(5′) bin 4×4
Astrodon 3nm SII: 14×600(2h 20′) bin 2×2
Astrodon 3nm SII: 8×120(16′) bin 4×4
Astrodon 3nm SII: 1×300(5′) bin 4×4
Astrodon 3nm SII: 6×360(36′) bin 4×4
Blue: 4×60(4′) bin 1×1
Blue: 17×30(8′ 30″) bin 2×2
Green: 5×60(5′) bin 1×1
Green: 18×30(9′) bin 2×2
Ha 3nm: 15×600(2h 30′) bin 2×2
Ha 3nm: 8×120(16′) bin 4×4
Ha 3nm: 7×300(35′) bin 4×4
Red: 5×60(5′) bin 1×1
Red: 18×30(9′) bin 2×2
Integration:
10h 27′ 30″
Avg. Moon age:
17.39 days
Avg. Moon phase:
92.40%
Bortle Dark-Sky Scale:
8.00
Mean SQM:
18.50

Basic astrometry details

Astrometry.net job: 2721298

RA center: 20h13m53s.0

DEC center: +38°0852

Pixel scale: 1.942 arcsec/pixel

Orientation: 359.747 degrees

Field radius: 0.880 degrees

Resolution: 2478x2122

File size: 2.8 MB

Locations: The Hills Observatory, Manchester, United Kingdom

Data source: Backyard

Description

Not a high resolution image as I chose to take this at bin 4x4 and 2x2 to speed up the image acquisition and I really wanted to get the Soap Bubble Nebula and with the shorter lighter nights approaching I did not want to let this one run till next year.

Narrowband images taken as bins 4x4 and 2x2 and stars taken at bin 2x2 and a few at 1x1. Narrowband data processed after star removal with Starnet++ and RGB stars added back.

Starnet++ removed all the stars and I did not need to do any manual touching up, a fantastic program.

Imaged over 6 nights May 11-21 2019

Comments

Sky plot

Sky plot

Histogram

NGC 6888 (Crescent Nebula) & Soap Bubble (PN G75.5+1.7), 



    
        

            Mike Oates

In these public groups

Broadband under Bortle 7/8/9