Tonight, July 1/2 Comet 65P/Gunn grazes the northern edge of the
globular star cluster M70 in Sagittarius, presenting an opportunity
for astro-imagers and photographers worldwide! Wait until local
midnight for Sagittarius to rise above the horizon murk and zero in
on the base of the Teapot asterism to the location of M70. You'll
probably need an 8-inch telescope to find the small, roundish blob
that is the comet, predicted to be glowing at 12th magnitude. Bump
the power past 100x to darken the sky background and enlarge the
apparent size of the comet. Bare in mind that you're unlikely to even
see comet Gunn from the city.
A greater challenge will be to grab a shot on the 10th, when the
comet passes close to the globular NGC 6652, because the bright Moon
will be near.
Here is an ephemeris for the positions of the comet in July:
July 1 18h40.3m -32deg.15'
July 6 18h39.0m -32deg.40'
July 11 18h35.1m -33deg.00'
July 16 18h31.5m -33deg.18'
July 21 18h28.3m -33deg.31'
July 26 18h25.7m -33deg.41'
July 31 18h23.7m -33deg.48'
The next decent comet astronomers are aware of, is the periodic comet
2P/Encke, which will brighten into a nice evening object in late
October and November. For news flashes on all the latest comets,
Good Luck! And Clear Skies Everyone!