Posts Tagged ‘C/2010 G2 Hill’

Comet C/2010 G2 Hill and update on SN 2011fe in M101

September 9, 2011 Leave a comment

During the early morning of 7th and 8th September I attempted to image Comet C/2010 G2 Hill which is very faint at approx mag 11 close to Lynx. On both occasions there were significant guiding errors with GRAS G7 in Spain which produced some very odd star trails. The comet only reaches a sufficient height for imaging on the GRAS telescopes after about 6.00 am Spanish time when the comet reaches 40 degrees above the horizon, so there may be some early twilight effects at play here.  GRAS telescopes generally cannot image below 30-35 degrees and atmospheric aberrations will be high below this level anyway.

The image below has been significantly cleaned up with all of the star trails removed. C/2010 G2 Hill appears as a faint smudge in the centre with a small diffuse coma. The comet is currently slowly brightening and should be visible in telescopes well into next year. GRAS G7 – 600 sec Lum/Deep Space Planewave 17″/FLI ProLine PL11002M

The supernova SN 2011fe in M101 (Pinwheel Galaxy) seems to have reached its maximum magnitude at around 10.0 or 9.9 according to the light curve provided on AAVSO. If you are thinking of imaging the galaxy now would be the best time !  Don’t forget that supernova SN 2011dh is still visible for imaging in M51 (Whirlpool Galaxy) too, but you will need to catch M51 early after sunset as it dips below 30 degrees altitude and into the murk by 10pm in the northern hemisphere. The current magnitude of SN2011dh in M51 is around 14.8

AAVSO light curve for SN 2011fe 9/9/11