About image
This faint nebula in Cassiopeia constellation is also called "The Phantom of the Opera"; the name derives from its resemblance to a theatrical mask.
Physically this is a HII region with a diameter of 77 light years, located at about 2700 parsec (about 8800 light years) away.
Technical data
Optic Tecnosky Apo Refractor LT 130 - 910mm f/7
Mount 10Micron GM2000 HPSII
Camera Moravian G3-16200 with external filter wheel 7 positions
Filters Baader RGB 50.8 unmounted
Guiding system OAG Moravian M68 with guide camera Moravian G1-0301
Exposure details Ha 20x1200" bin1 -20C
R 14x300" bin1 -20C
G 14x300" bin1 -20C
B 18x300" bin1 -20C
Total integration 10.5h
Acquisition Voyager, PHD2
Processing Pixinsight 1.8, Photoshop CS5
SQM-L 20.68 (Moon in the sky)
Location Promiod (Aosta Valley, Italy), own remote observatory
Date 19/20 September 2018