Craters Theophilus, Cyrillus, Catharina




Date: 12 February 2008
Location: My back garden in suburban London
Exposure: 100 frames of 0.2sec
Telescope: Celestron C11 at F10 on Skywatcher EQ6 mount.
Camera: Philips SPC900 webcam at prime focus.
Processing: 100 frames of 0.2sec stacked in Registax with mild wavelet processing
Comments: The camera was piggybacked on an unguided scope.
Unfortunately, at F1.8, the lens shows significant aberrations towards the corners giving very misshapen stars!
The Orion, Horsehead and Flame nebulae are quite visible and there is just a hint of Barnard's Loop over to the left.