AstroFest saw me treating myself to something I’ve wanted for some time, an AstroTrac. Sunday evening was clear and frosty so I set the unit up on the top of a tripod on the path in front of my house. Leaving the Canon kit 18-55 lens on the 350D I took 10 3 minute exposures of Cassiopia at ISO 400 with the lens set at about 40mm. This produces a huge field of view that takes in the whole constellation down to the Double Cluster in Perseus (lower left of frame) and across to NCG 7789 (mid right).
Categories