This is a combination of 51 images, each of 30 seconds. The images were taken with a Alta-U16MD7D9 attached to an OGS 20” F/8.1 telescope. This used 2x2 binning. Each of the images was corrected with a dark frame and a flat field.
An STV was atttached to a Televue 85 for guiding.
Click here for the full resolution image