The loose open star cluster Collinder 140 in southern Canis Major, a zig-zag line of stars (which looks like a letter J visually through binoculars) just left of centre here. The orientation is along the Milky Way here, so north is at right, not at top. This is a stack of five 2-minute exposures with the Canon L-series 135mm lens at f/2.8 and Canon 7D at ISO 1250. The field simulates a binocular field of roughly 7°.
This is a wide-field framing of the heart of the Coma-Virgo cluster of galaxies in the northern spring sky, with galaxies galore in the frame, including a dozen Messier objects. The field is 7.5° by 5°, so similar to binoculars. The faintest galaxies here are about 12th magnitude. Just below the centre is the Marakarian's Chain of galaxies including the Messier galaxies M84 and M86. The giant elliptical M87 (famous for having its central black hole imaged) is below and to the left of the Chain. There are many other Messier objects in the field — At top right around the blue star 6 Comae is the trio of M98 (at the far edge), M99 (below and right of 6 Comae) and M100 (at top). At left are M88, M91, M90 amd M89. At bottom left is M58 and M59. M60 just squeaks onto the frame. This is a stack of 10 x 6 minute exposures with the SharpStar 61 EDPH II refractor at f/4.5 and the Canon EOS Ra at ISO 100. This is a single framing, not a mosaic. Taken from home April 24, 2022. Haze moving in spoiled exposures taken after this set. Dithered with MGEN3 autoguider; no darks applied.
