August 8, 2010
Pietrabbondante
Crescent Nebula or an error after another ....
haste and superficiality over moisture ... these are the two words to characterize the shooting summer .. pity a few more minutes spent in planning would have improved the results ...
here is a raw of the evening ..
using the flattener has a total increased undersampling worse picture: the main subject of the photo, the crescent is a small portion of the field, the internal structures of the nebula are not resolved, this lightly .. the choice of setup has also added a listing Focus approximate quick'n'dirty ...
however rich area of \u200b\u200bthe swan of his h-alpha emission fills the bottom of shades ...
800IS Canon EOS 1000D
focus of sw 80ed, WO flattener
TypeII
Focal length: 480mm f / 6 on
HEQ5 guided sw70/500 spc900nc and GuideMaster (EOS USB plug-in)
focus with Hartmann mask
focus of sw 80ed, WO flattener
TypeII
Focal length: 480mm f / 6 on
HEQ5 guided sw70/500 spc900nc and GuideMaster (EOS USB plug-in)
focus with Hartmann mask
light frame 17 x 420 / 2 (sum)
for a total of about 2h 15
dark (median)
flat 9 (median)
for a total of about 2h 15
dark (median)
flat 9 (median)
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