Images were taken with a Modified
Canon Rebel XSi (450D). Overnight ambient temperatures were
in the teens Fahrenheit during imaging session.
Telescope used for imaging was
an Astro Tech 127mm ED APO Triplet refractor using a Celestron
f/6.3 focal reducer for Schmidt-Cassegrains. The Astro Tech 127
and ED80 refractor guide scope were mounted on an Orion Atlas
EQ-G mount. The EQMOD
ASCOM driver was used to drive the mount directly via an EQDIR
interface module. Image is Full Frame.
Lulin (C/2007 N3) Image
- Full Frame:
138 one-minute exposures at ISO
1600 were combined using DeepSkyStacker
and reduced in size for display (1200X800). The "Comet Stacking"
mode was used with Kappa-Sigma Clipping combine of light frames.
Seeing was bad. Imaging was during glow of the last quarter Moon.
Lulin (C/2007 N3) Video:
200 one-minute exposures were
used for this 1280 X 720 HD video. Images were taken over a 4.5
hour period beginning shortly after midnight 2/17/09. VirtualDub
software was used create the AVI video from individual JPG frames.
The video is posted on YouTube at:
More Comet Lulin Images and Videos at closest
approach to Earth on 2/24/09 can be seen HERE.
UPDATE: I am now providing a low cost modification
service to convert your 450D or 1000D. CLICK
HERE for details.