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Hemisphere:  Northern  ·  Contains:  Crescent Nebula, NGC 6888
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Crescent Nebula (Caldwell 27), 


            Henning Schmidt
Crescent Nebula (Caldwell 27)
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Crescent Nebula (Caldwell 27)

Technical card

Imaging telescopes or lenses: SkyWatcher Esprit 80ED

Imaging cameras: QHYCCD QHY 183M  ·  QHYCCD QHY 183C

Mounts: SkyWatcher EQ8 Pro

Software: Adobe PS CS2  ·  PixInsight

Filters: Baader Planetarium H 1.25", Ha 7nm  ·  Hutech IDAS 1.25" LPS P2

Accessory: Lacerta Mgen

Dates:Sept. 21, 2019Sept. 22, 2019

Baader Planetarium H 1.25", Ha 7nm: 21x600" (gain: 20.00) -30C
Hutech IDAS 1.25" LPS P2: 76x120" (gain: 20.00) -25C

Integration: 6.0 hours

Darks: ~100

Bias: ~200

Avg. Moon age: 22.04 days

Avg. Moon phase: 51.16%

Basic astrometry details job: 3598362

RA center: 20h 12' 10"

DEC center: +38° 21' 25"

Pixel scale: 1.202 arcsec/pixel

Orientation: 340.626 degrees

Field radius: 0.751 degrees

Resolution: 3678x2586

Locations: Home observatory, Rostock, Mecklenburg-Vorpommern, Germany

Data source: Backyard


Crescent Nebula (Caldwell 27) - Composite with Halpha (QHY 183M, 24x 600 sec, Gain 20, Offset 30, cooled: -30°C) from 21.09.2019 and RGB (QHY 183C, 76x 120 sec, Gain 20, Offset 30, cooled: -25°C) from 22.09.2019; objective: Skywatcher Esprit-80ED.



Henning Schmidt
License: None (All rights reserved)

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Crescent Nebula (Caldwell 27), 


            Henning Schmidt