UGC 7321, Superthin Spiral Galaxy, type Sd, in Coma Berenices. Taken on the nights of May 7 and
May 8 2007, with a DSI Pro II and Outback Cooler on a C8NGT (8" Newtonian f5). All subframes were
180 sec. The RGB subframes were also used to make synthetic L subframes (sL), which were then
used in the stack of images to create the final L image. The resulting total exposures were
(L+sL):R:G:B = (123+66):78:75:66. Color balance was achieved via numerically scaled channels.
Captured with Envisage, calibrated and sigma combined in Iris with other processing using FITZ,
PixInsight LE and Photoshop CS. North is up.