July - Monthly Observing Challenge

[iceman]

Hi all.

It's a new month, time for a new monthly observing challenge. We hope you take the time to participate, observe these objects, do some reports and sketches, and generally discuss these objects on the forums.

I'll make 1 sticky instead of 6, and link to the 6 threads here:

Galaxy - NGC5128 (Centaurus A) (http://www.iceinspace.com.au/forum/showthread.php?t=2694)
Open Cluster - M6 (Butteryfly Cluster) (http://www.iceinspace.com.au/forum/showthread.php?t=2696)
Globular Cluster - M22 (http://www.iceinspace.com.au/forum/showthread.php?t=2697)
Nebula - M20 (Trifid Nebula) (http://www.iceinspace.com.au/forum/showthread.php?t=2698)
Planetary Nebula - NGC3918 (Blue Planetary) (http://www.iceinspace.com.au/forum/showthread.php?t=2699)
Multiple Star - HN40 (http://www.iceinspace.com.au/forum/showthread.php?t=2700)

For deep-space images of these objects, please see the sticky thread in the Deep Space Astrophotography (http://www.iceinspace.com.au/forum/forumdisplay.php?f=7) forum.

Thanks to John and Andrew as usual for their great work in helping me compile and writeup these objects.