The Silver Coin Galaxy, NGC 253, in Sculptor with globular cluster NGC 288 near South Galactic Pole. Taken from Timor Cottage, Coonabarabran, NSW, Australia, December 12, 2010. This is a stack of 4 x 8 minute exposures at ISO 1600 with Canon 5D MkII camera on 105mm Astro-Physics Traveler apo refractor at f/5.8 with 6x7 field flattener. Taken under partly moonlit skies and with object getting low in west.
This is a pair of colourful nebulas in Cassiopeia. The Pacman Nebula, NGC 281, is at bottom near the stars Alpha Cassiopeiae, aka Schedar (or Schedir) at right, and eta Cas, aka Achird (above NGC 281). At top are the largely blue or magenta reflection nebulas IC 59 and IC 63 adjacent to the blue star Gamma Cassiopeiae, aka Navi. The tiny blue dot of the planetary nebula Abell 2 is just right of Achird. North is at top in the porttrait format image. This is a stack of 8 x 8-minute exposures through the Borg 77mm f/4 astrograph and with the Canon EOS Ra red-sensitive mirrorless camera, at ISO 800. Stacked, aligned and processed in Adobe Camera Raw and Photoshop 2020. No nebula or light pollution reduction filter was employed in taking the images. I shot this from home November 25, 2019 on a very fine if frosty autumn night. The Dew Destroyer heater coil from David Lane wrapped around the front objective nicely kept off the frost.
NGC 281 in Cassiopeia, with 5-inch AP apo refractor at f/6, and Canon Digital Rebel camera for stack of two 10 minute exposures at ISO 400. Taken from home Nov. 11, 2004.
