Astronomy, Astro Photography and Landscape Photography
Photographs of Comet C/2011 L4 (PANNSTARRS)
This page contains my photographs of C/2011 L4 (PANNSTARRS), a comet which it is proposed will become very bright (perhaps naked eye visible) in 2013. I say wait and see! But in the mean time I have scheduled photography of the comet in to my nightly script, so intend to build up a history of photographs of the comet over the coming months (which will become more challenging in February-March as the comet moves closer to the sun).
Below is information and photographs from a sequence of photographs I took in January and February, now ended due to horizon limitations and the location of C/2011 L4 PANSTARRS.
All photographs are taken using my 12″ SCT upon Paramount ME with SBIG ST8-XME camera using clear filter. Focal length was approx 2990mm and scale is 1.26 arcsec/pixel but has now changed to 2200mm and 1.69 arcsec/pixel, all at bin 2×2. Times shown are in UT, of the middle exposure of the exposure sequence from the given night/morning.
My last image captured of C/2011 L4 PANSTARRS in the following sequence through my 12″ SCT telescope was on the 15th February 2013. At this time the comet was less than 10 degrees above the horizon when photographed, and getting closer to the horizon by the day. Clouds, wind and the proximity to the horizon have prevented me continuing to photograph the comet since the 19th February which was my last attempt (and was of poor quality due to cloud).
Images below this point were taken at f/10, 2990mm. Since then I have added a focal reducer bringing this down to f/7.4 and 2200mm. Images above this point are taken at the new 2200mm focal length.