crescent027_StdDev32.jpg by adam stuart

adam stuart | all galleries >> Galleries >> nebulae_in_hydrogen_alpha_and_oiii > crescent027_StdDev32.jpg


07.16.09	adam stuart

crescent027_StdDev32.jpg

Miami, FL

Crescent Nebula
Polar alignment not that bad: over 6 hours of guiding by SBIG STV, 0 pixel drift in y-axis and 50 pixel drift in x-axis (8.3 pixels/hour).

125% Resampled

SXV-H9,2.75 arc-sec/pixel
Stellarvue Nighthawk piggybacked on STV-guided LX200 at 1,575 mm, Astronomik 13 nm H-alpha filter,
28 x 760 seconds = 5.9 hours, unbinned 1x1. Acquired in Astroart 3.0, aligned in AIP4WIN, and sigma combined in Ray Gralak's pre-beta 11. Darks, Bias and Flats used. full exif

other sizes: small medium large original auto

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