The Soap Nebula, PN G75.5+1.7, was discovered by the amateur astronomer Dave Jurasevich back in 2008. This faint nebula can be detected using narrow band filters with long integration times. We can find it near the popular Crescent Nebula, NGC6888.
Both nebulae are 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.
NGC 6888 is located some 5,000 light-years away from Earth.
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).