The Crescent Nebula, NGC 6888, is located some 5,000 light-years away from Earth.
It is surrounded by huge clouds of gas and dust in the constellation of Cygnus. NGC 6888’s central star is classified as a Wolf-Rayet star (WR 136). This star will become a supernovae in the near future.
To capture this image I used Hα and [OIII] narrow band filters in order to capture the faint details of this amazing deep sky structure.
Image Details
Hα: 126×300″
[OIII]: 50×300″
L: 40×120″
RGB: (20×120″)x3All images at 120Gain -15ºC bin2
Calibrated with 50 flats, 50 darks, 50 biasTotal exposure: 18h
Average darkness: 21 mag/arcsec2
Image resolution: 2.12”/pixel
Equipment
FSQ85ED telescope
Mesu200 mount
ASI294MM Pro camera with ZWO EFW 8 pos
Guiding with ASI174MC and ZWO OAG
Baader filters
Software
SGP, PHD2, APP, PIX, LR, PS, TPZ.
Aleix Roig, July 2021.
Prades (Tarragona, Catalonia – Spain).