That 2nd URL should have been http://users.wirelessbeehive.com/~paw/temp/C_2012_K5.2012JAN05.JPG On 05 Jan 2013, at 00:58, Wiggins Patrick wrote:
I got another couple of shots of C/2012 S1 ((ISON) tonight. Still not much to look at. But I'm still hopeful that it will become the great comet some people are thinking it might.
Here are both shots side-by-side. The comet is the tiny fuzz ball right in the center of each shot.
http://users.wirelessbeehive.com/~paw/temp/C_2012_S1.2012JAN05.JPG
30 second exposures.
Since they were taken 10 minutes apart the comet moved a bit between images so use the cross-eye method to see the comet in pseudo 3D against the background star field.
Kurt suggested I also try for C/2012 K5 ((LINEAR). Thanks for the suggestion Kurt.
Much bigger and brighter. Here is a montage of 4 images with 15, 30 & 60 second exposures shot with the mount set to sidereal rate (followed the stars) and one 120 second exposure with the mount programmed to follow the comet. Note the first three were taken just before the comet transited while the latter was taken just after transit (and rotated to match the others).
http://users.wirelessbeehive.com/~paw/temp/C_2012_S1.2012JAN05.JPG
I don't think I'll do much with K5 but I am going to try working S1 every clear night with the same exposures for as long as it's visible. Maybe in the end I'll have a fair collection of images showing the comet growing bigger and brighter.
patrick