Saturday, 17 January 2015

Ha Full Disk Offband 17th January

With temperatures at or around freezing this morning it was not helping the tilt tune etalon system on my Coronado DS40, for an even disk it was off band, however if I tilted the etalon to nearer on band then the image was plagued with uneven banding and illumination artifacts.  So, in the end I just settled for an off band disk.  Taken with the DS40 at f10 with the DMK31 camera.