Date Taken: 01/28/2016
Location: Cheyenne, WY
Mount: Orion Sirius EQ-G Computerized GoTo Telescope Mount
Camera: Nikon d7100 with Nikkor 180 ED f/2.8 Lens @ f/5.0
Processing: PixInsight, Photoshop CS6
Exposure: 306x77 sec average over several nights
Notes:

Orion Sirius equatorial mount offers great stability for unguided corrected images up to 180 secs in most wind conditions.