TECHNICAL DETAILS ICAL DETAILS

OBJECT DATA: NGC 281(Cassiopeia). Distance: 9,500 light years. Angular size: '35
CATEGORY: Emission nebula
OPTICS: Takahashi FSQ f/5
MOUNT: Losmandy GM-8
CAMERA: Modified Canon 350D (with Baader IR filter) @ 800 ISO
FILTERS: Baader 7 nm H alpha filter
DATE: October 4 and 5, 2008
LOCATION & CONDITIONS: Atienza Observatory (Las Rozas, Madrid) - Spain. 11-15 ºC
EXPOSURE: 15 X 900 sec. (Total: 3.75 hrs.)
CALIBRATION FRAMES: 12 darks, 20 flats
AQUISITION & PROCESSING: MaxIm DL, Images Plus, Photoshop CS3
COMMENTS: The Pacman Nebula is an H II region in the constellation of Cassiopeia and part of the Perseus Spiral Arm.
Prominent Bok Globules are visible in the central portion of the image.