This is a combination of 17 images, each of 5 seconds The images were taken with a SBIG ST-10 3 CCD Camera attached to an OGS 20" F/8.1 telescope. Each of the images was corrected with a dark frame and a flat field.
An STV was atttached to a Televue 85 for guiding.
First obligatory M42 of this season. 17 images just before the clouds rolled in for the evening