TECHNICAL DETAILS ICAL DETAILS

OBJECT DATA: B33, The Horsehead nebula (Orion). Distance: 1.600 light years , Angular size: 6'
CATEGORY: Dark nebula
OPTICS: Takahashi FSQ 106 mm f/5
MOUNT: Losmandy GM-8
CAMERA: Modified Canon 350D (with Baader IR filter) @ 800 ISO
FILTERS:none
DATE: February 21, 2009
LOCATION & CONDITIONS: La Aldehuela (Jaén) - Spain. 5 ºC
EXPOSURE: 25 X 300 sec. (Total: 125 min.)
CALIBRATION FRAMES: 24 darks, 26 flats
AQUISITION & PROCESSING: MaxIm DL, Images Plus, Photoshop CS3
COMMENTS: The red glow originates from hydrogen gas predominantly behind the nebula (IC434) , ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust. Also visible is the Flame nebula NGC2024 (bottom left, below the 1.7 magnitude star Alnitak).

TECHNICAL DETAILS ICAL DETAILS

OBJECT DATA: B33, The Horsehead nebula (Orion). Distance: 1.600 light years , Angular size: 6'
CATEGORY: Dark nebula
OPTICS: William Optics Megrez 90 APO f/6.2
MOUNT: Losmandy GM-8
CAMERA: Modified Canon 350D (with Baader IR filter) @ 400 ISO
FILTERS: Lumicon Deep Sky
DATE: March 1, 2008
LOCATION & CONDITIONS: Las Rozas (Madrid) - Spain. 8ºC
EXPOSURE: 25 X 300 sec. (Total: 125 min.)
CALIBRATION FRAMES: 24 darks, 26 flats
AQUISITION & PROCESSING: MaxIm DL, Images Plus, Photoshop CS3
COMMENTS:

TECHNICAL DETAILS ICAL DETAILS

OBJECT DATA: B33, The Horsehead nebula (Orion). Distance: 1.600 light years , Angular size: 6 "
CATEGORY: Dark nebula
OPTICS: William Optics Megrez 90 APO f/6.2
MOUNT: Losmandy GM-8
CAMERA: Modified Canon 350D (with Baader IR filter) @ 800 ISO
FILTERS: Baader H alpha, 7 nm
DATE: February 8, 2008
LOCATION & CONDITIONS: Las Rozas (Madrid) - Spain. 5 ºC
EXPOSURE: 2 X 1.200 sec. (Total: 40 min.)
CALIBRATION FRAMES: 7 darks, 0 flats
AQUISITION & PROCESSING: MaxIm DL, Images Plus, Photoshop CS3
COMMENTS: Narrow band imaging with an H alpha filter eliminates most light pollution enabling longer exposures from heavily light polluted suburban skies (like those of my location).