C2012/S1 ISON in Leo, on Sept 28 5:56am PDT (Sept. 28, 12:56UT). The brightest star to the left of
the frame is 3UC 217-106310 at a magnitude of about 13.6 and the brightest star to the right of the
frame is 3UC 217-106367 with a magnitude of 13.3. Imaged with CCD Lab’s Q285M camera and a Celestron
EdgeHD 9.25 at f10, on a Losmandy G11/Gemini mount. The field of view is approximately 13 x 10 arc
minutes. The subframes were 1 minute for a total exposure of 51 minutes (from 5:02 am to 5:56 am).
Captured with Nebulosity, calibrated and combined in Iris with other processing using
PixInsight LE and Photoshop CS. North is up and East is to the left.