Narrowband NGC 281 | Timo-Pekka Metsälä

Photographer
Timo-Pekka Metsälä
Email
timo-pekka.metsala@pp.inet.fi
Location of photo
Espoo, Finland
Date/Time of photo
August 11, 2006
Equipment
Takahashi FS-102NSV refractor on a Takahashi EM-200 German equatorial mount, Atik ATK-16HR CCD camera. True Technology SupaSlim Filter Wheel Astronomik S-II, H-alpha and O-III filters.
Description
"The Pacman Nebula" NGC 281 in Cassiopeia with narrowband emission line filters. The red color represents ionized sulphur (S-II), green is ionized hydrogen (H-alpha), and the blue is doubly ionized oxygen (O-III). The total exposure time is 3 hours.
Website
http://timosastro.1g.fi