Celestial hemisphere:  Northern  ·  Constellation: Cygnus (Cyg)  ·  Contains:  Crescent Nebula  ·  LBN 193  ·  LBN 203  ·  LBN 208  ·  NGC 6888  ·  Sh2-105
crescent nebula in SHO with 45 min exposure time, Thomas
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crescent nebula in SHO with 45 min exposure time

crescent nebula in SHO with 45 min exposure time, Thomas
Powered byPixInsight

crescent nebula in SHO with 45 min exposure time

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Description

crescent nebula with only 15 subs (again because of massive mount problems with DEC axis); actually I wanted to throw away all subs of last night, but it was such a beautiful sky last night that I at least wanted to have a short look; no usage of any calibration data (no darks/flats/bias); I was wondering how it could have that less vignetting without any flats; however, the amount of noise is of course terrible and the DEC axis distortion is destructive

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crescent nebula in SHO with 45 min exposure time, Thomas