[OzEclipse (Joe Cali)]

Hi Mark,

I wouldn't say I'm a regular comet chaser but I have done some. The full moon will make an Anzac capture difficult. It's just southwest of a 3.5% waxing crescent tonight. I'm running a nightscape photography workshop this month and the field trip is tonight near Boorowa. I'm going to have them have a go at it as one project. We're fighting twilight tonight. So we'll see. 12P has a steep orbital inclination (i=74 deg) so it follows the twilight band and doesn't climb high out of the twilight even into May. This means you will always be battling quite short observing windows. A short exposure time capture strategy might be best

The exposure sequencing and processing strategy depends entirely upon the motion of the comet relative to background stars, how long the observing window is, background light from LP or twilight.

Comet Leonard was a similar total magnitude but bigger angular area so I'd expect 12P to have a higher surface brightness. Here are some photos with exposures embedded on the images. Leonard also had a short window but each night after Christmas I had about 1 hr of dark sky capture time.

Joe