The Whirlpool Galaxy
Wikipedia: https://en.wikipedia.org/wiki/Whirlpool_Galaxy Photo: 13x30s, ISO12800, f/5.6, Nikon D5 DSLR, Nikkor 300mm 2.8GVRII lens, Avalon Linear mount, IDAS LPS D1 QRO filter.
Galaxies in Leo
D5, 70-200FL at 120mm, f/4
1260mm f/12.6 configuration, Nikon D5, Nikkor TC-1.4EIII extender on FC-100DL APO