Comet 17P/Holmes from Gurushikhar Observatory




Comet 17P/Holmes observed with the Mt Abu 1.2m telescope with a liquid nitrogen cooled CCD camera mounted at the Cassegrain focus. Single frames of 5sec each in 3 filters color mapped to RGB. Only processing done with iraf is to shift the images to have a common center for the comet. Same image shown with two different scalings. No flat fielding/bias subtraction has been applied. Image spans 6 by 6 arcmin.
Observers: K. S. Baliyan, D. B. Pancholi, S. Ganesh

View with a Canon S2 IS from same location

Integration time is 10sec unguided; image cropped (SG)




Comets studied with the Optical Polarimeter at PRL