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Dimensions1024 x 768
Original file size188 KB
Image typeJPEG
Date modified28-Feb-10 05:11
NCG3718  Galaxy Ursa Major

NCG3718 Galaxy Ursa Major

Date: 2010-02-02
Optics: Meade LX90 LNT 8" Schmidt-Cassegrain
Mount: Standard Wedge, LX90 fork, LX200 tripod
Reducer: Alan Gee II, f/5.6
Guide: Meade 60mm F300mm, Orion Starshoot Autoguider, PHD.
Filter: None.
Camera: Canon XSi/450D modified with Baader UV/IR filter, internally cooled with CO2 gas to 28-37 degF.
Exposure 4-6min x 7 ISO400 (0.5hr), 3 x 92 ISO1600 (4.6hr).
Stacking: DSS KappaSigmaMedian, 60x2 flats, 30x2 bias, no darks.
Post: Photoshop CS3, ImagesPlus, NoiseNinja.