![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
8 - 10 min. exposures at Gain 1, Offset 100. TEC-140 (980mm, f/7) and no focal reducer, yielding 980mm, f/7 and an image scale of 1.64 arc-seconds/pixel; Q453HR color CCD camera. No darks, no bias frames and no flat frames applied. Post processing: Bad Pixel Map in Nebulosity2; DDP in ImagesPlus 3.75. Color balance and curves in Nebulosity2. Image cropped from 3040 x 2016 to 1277 x 977.
20090427-28_M51-SuperComb-DDP-crv-adjcr.jpg
All images copyright William J. Shaheen, unless otherwise noted. Do not use or distribute without prior consent.