The Coathanger asterism of stars, aka Cr399, in Vulpecula, with the small open cluster NGC 6802 at left. I shot this from home on a very clear night on July 31, 2019, using the Astro-Physics Traveler and Hotech f/6 field flattener for a stack of 5 x 8-minute exposures at ISO 800 with the now 10-year-old filter-modified Canon 5D Mark II. Diffraction spikes added with Astronomy Tools actions..
Cr399 Coathanger Cluster or Brocchi's Cluster, with 135mm Canon L-lens at f/2.8 and Canon 20Da camera at ISO 800 for stack of 4 x 3 minute exposures. Taken Sept. 8, 2007; contains NGC 6802 cluster; Glow layer added to emphasize stars.
The waxing crescent Moon in the Hyades star cluster and below reddish Aldebaran in Taurus, on April 18, 2018. Light cloud so often present at such events added the colourful lunar “corona” around the bright crescent, while sunlight reflected off the Earth added the glow of Earthshine to the dark side of the Moon, making it visible. All are set in the deep blue of late evening twilight. There was an occultation of Aldebaran this night but not from my location in Alberta. It was visible from locations far to the north and west in Canada and Russia. This is a 7-exposure stack of images from 1/5-second to 3.2-seconds, bracketed at 2/3-stop intervals, blended with luminosity masks. I neglected to take even shorter exposures for the properly exposed crescent itself. Alas! On the other hand, the overexposed bright crescent goes with the colourful corona, as the bright crescent is its source. All with the 200mm telephoto at f/2.8 and Canon 6D MkII at ISO 400, and tracked on the Sky Watcher Mini tracker.
