January 31, 1999 01:31UT
This is a combination of four eight minute images taken with a Pictor 416XT. The Pictor was attached to an LX200 10" F/6.3 telescope. A focal reducer was used to make this system an F/4 system (focal length = 1000mm). A Meade ETX was mounted on the telescope and a Pictor 201XT was attached to the ETX for autoguiding. Each of the four images was corrected with a dark frame and a flat field. After combining, the image was logarithmically stretched.
The flat field used was for the regular F/6.3 telescope. The moon was 44 degrees away and 16 hours before full. A bilinear correction was made to account for variations in background brightness.