December: Test shots with new scopes/mounts
Dec 21: TMB 80/480 Arrives!
Dec 3: AP1200 Arrives!
Nov 30: TMB 152/1200 Arrives!
This is M109, a Barred Spiral Galaxy in the constellation of Ursa Major. This is also First Light for my new Hutech Hα Front Filter (HA-FF). For this image, I captured 6.4 hours of Hα over two nights, and 2.8 hours of RGB data on a third night. Not sure it was worth it.
The Hα regions, such that they are, appear as the small, cherry-red regions in the spiral arms of the galaxy (see the full-resolution image). M109 turned out to be a poor choice of target for testing the Hα filter. This is because the Hα regions in M109 are very small; i.e., not easily resolved, even at the reasonably long focal length of my Newtonian (1000mm). Of course, using a DSLR doesn't help, since the Bayer matrix permits only one in every four sensor locations to record the Hα wavelength. M101 and M51 are in my cross-hairs while I wait for the summer Milky Way objects to be well placed at my site (namely, West of the Meridian early at night).
The image above is a slight crop of the full field. A full-resolution image is also available. North is up.