Hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent nebula  ·  NGC 6888
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Crescent Nebula - NGC 6888, 


            Chuck's Astrophotography
Crescent Nebula - NGC 6888
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Crescent Nebula - NGC 6888

Technical card

Imaging telescopes or lenses: Explore Scientific ES127mm f/7.5 ED APO triplet

Imaging cameras: ZWO ASI1600MM-Cool

Mounts: Celestron CGX

Guiding telescopes or lenses: Orion ST 80

Guiding cameras: Lodestar X2

Software: Photoshop CS3  ·  PHD2  ·  Sequence Generator Pro  ·  PixInsight

Filters: OIII  ·  Ha

Accessory: ZWO 8x 1.25" Filter Wheel (EFW)  ·  Hotech 2" SCA Self-Centering Field Flattene Hotech SCA Field Flattner  ·  MoonLite 2.5" Focuser with MotorFocus  ·  QHYCCD PoleMaster

Basic astrometry details

Astrometry.net job: 3076373

RA center: 20h 12' 16"

DEC center: +38° 18' 0"

Pixel scale: 0.832 arcsec/pixel

Orientation: 87.855 degrees

Field radius: 0.418 degrees

Resolution: 2888x2184

Data source: Backyard


I put 'Ha' in the Red Channel and 'OIII' in the Green and Blue Channels.

I combined data I captured this month with data I captured last year.

Filter: Astronomik OIII
Subs 2018: 183x120" (gain/offset: 139/21)
Subs 2019: 36x240" (gain/offset: 75/15)

Filter: Astronomik Ha
Subs 2018: 147x180" (gain/offset: 139/21)
Subs 2019: 45x240" (gain/offset: 139/21)

Total hours: 18.85 hours


Sky plot

Sky plot


Crescent Nebula - NGC 6888, 


            Chuck's Astrophotography