Images of M51 and its supernova taken of 4 June, left image taken with GRAS-05 1x120 second exposure with a clear filter, right image taken with GRAS-07 1x300 second luminance exposure (click to embiggen).
The stand-out target for June is of course M51. The supernova detected in it is of course a key reason for this. As of writing the supernova is still bright seven days out from the original detection, and there is a need for long term follow-up of this supernova (and I repeat my call for images of M51 in the critical period when it was first detected, and Rochester Astronomy is also looking for submissions).
However, M51 – the whirlpool galaxy, is a classic and beautiful target in its own right. Colour images of this galaxy are particularly nice.
While there are an abundance of comets about, most are below magnitude 13. 2011 C1 McNaught is relatively bright, but does not rise above 20 degrees above the horizon before astronomical twilight. 2009 P1 Garrad is around magnitude 10, and is above 20 degrees at astronomical twilight.
On the border between Pisces and Aquarius, it is within GRAS-05 range of the 13th magnitude galaxyNGC 7428 on July 15. Unfortunately, the nearly full Moon is still up (although close to the western horizon).
On the 23rd and 24th it is within GRAS-05 range of a group of small galaxies the brightest being magnitude 13 NGC 7396. Howevere at this time the last quarter Moon is high in the sky.
You can download the MPEC elements or use the one-line elements below.
CK09P010 2011 12 23.6711 1.550503 1.001071 90.7477 325.9975 106.1778 20111225 4.0 4.0 C/2009 P1 (Garradd)