NGC7317. Stephans Quintet

This group of galaxies lies in the constellation of Pegasus shining at about magnitude 14.5. I took this image using a ten inch F4.8 reflector , PHD. auto guiding and an Atik mono 383L CCD camera. I captured five minute sub frames with matching dark frames and combined them with flat field frames to reduce the effect of vignetting in the final image . The total exposure times were 50 minutes using a blue filter, 25 minutes using a red filter and 15 minutes using a green filter.

NGC 7331 was included in this composite image: