Thursday, December 27, 2007

Comet 8P/Tuttle

Tonight I did some test imaging of Comter Tuttle through the 400mm lens with a 2X teleconverter making it a 800mm F/5.6 system. Continous 1 minute exposures were made from 01:54 UT to 02:35 UT on December 27th. Below is the sum of thirty seven one minute exposures. The comet is moving quite rapidly in dec (about 7 arcseconds per minute) thus the image of the comet is trailed against the stellar background.


Details: 37 minutes (effective) @ ISO 1600 | F/5.6 | 800mm | Takahashi EM200 Mount


Details: Comet centered sum of 37 images.


Details: Cropped and inverted version of comet centered image

3 comments:

Jim said...

Nice image! I wonder what the comet would look like if you coadded them shifted to stack the comet up? Now you make me want to go buy one of the 400mm L-glass lenses.... Well, that and a Takahoshi mount. Ok, and a 1D camera..... Got about $20K I can use?

David A. Harvey said...

Thanks Jim - You got here too early - the summed comet centered images I posted just after you commented. Great minds think alike :)

Tuguldur said...

beautiful work David!