Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  NGC 6888
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The Crescent Nebula (NGC 6888), 



    
        

            Olivier Ravayrol
The Crescent Nebula (NGC 6888)
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The Crescent Nebula (NGC 6888)

Getting plate-solving status, please wait...
The Crescent Nebula (NGC 6888), 



    
        

            Olivier Ravayrol
The Crescent Nebula (NGC 6888)
Powered byPixInsight

The Crescent Nebula (NGC 6888)

Acquisition details

Dates:
Sept. 12, 2021
Frames:
Astronomik H-alpha CCD 6nm 1.25": 28×480(3h 44′) ISO15 (gain: 75.00) -15°C bin 1×1
Astronomik OIII CCD 6nm 1.25": 26×480(3h 28′) ISO15 (gain: 75.00) -15°C bin 1×1
Integration:
7h 12′
Darks:
29
Flats:
20
Bias:
100
Avg. Moon age:
5.92 days
Avg. Moon phase:
34.65%
Bortle Dark-Sky Scale:
5.00
Mean FWHM:
5.55
Temperature:
20.00

Basic astrometry details

Astrometry.net job: 5289086

RA center: 20h12m00s.7

DEC center: +38°2100

Pixel scale: 0.778 arcsec/pixel

Orientation: 283.926 degrees

Field radius: 0.620 degrees

Resolution: 4613x3411

File size: 8.9 MB

Locations: Observatoire personnel, Tournefeuille, Haute-Garonne, France

Data source: Backyard

Description

HO-HOO (6nm narrow band filters)
Bin1x1 Ha:3h44, OIII:3h28mn exposure time
200/1000 mm Newtonian telescope
Camera ZWO ASI1600MM Pro
Guiding with AOG and ZWO ASI1174MM mini camera using PHD2
Automatic acquisitions with APT
Preprocessing with SIRIL
Image processing with Photoshop
Final touch with Lightroom

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