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Contains:  IC 4996, Crescent nebula, NGC 6888
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Crescent Nebula (NGC6888) and surroundings on widefield HST  SII/Hα/OIII (Mosaic 2x2), 





    
        

            Jose Carballada
Crescent Nebula (NGC6888) and surroundings on widefield HST  SII/Hα/OIII (Mosaic 2x2)

Crescent Nebula (NGC6888) and surroundings on widefield HST SII/Hα/OIII (Mosaic 2x2)

Technical card

Resolution: 4096x3088

Dates:July 29, 2017Aug. 14, 2017

Frames:
Baader Planetarium Ha 1.25" 7nm: 240x120" (gain: 200.00) -200C bin 1x1
Baader Planetarium OIII 1.25" 8.5nm: 158x60" (gain: 200.00) -20C bin 2x2
Baader Planetarium SII 1.25" 8nm: 160x60" (gain: 200.00) -20C bin 2x2

Integration: 13.3 hours

Avg. Moon age: 13.94 days

Avg. Moon phase: 47.60%

Astrometry.net job: 1691244

RA center: 302.506 degrees

DEC center: 39.284 degrees

Pixel scale: 3.114 arcsec/pixel

Orientation: 89.294 degrees

Field radius: 2.218 degrees

Data source: Backyard

Description

Mosaic of 4 panels, original picture at 8697px x6557px (downsampled and uploaded only in 4k).

Comments

Author

Carballada
Jose Carballada
License: Attribution-NonCommercial-ShareAlike Creative Commons
1822
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Crescent Nebula (NGC6888) and surroundings on widefield HST  SII/Hα/OIII (Mosaic 2x2), 





    
        

            Jose Carballada