Date: 02/14/2010
Description: The Whirlpool Galaxy (also known as Messier 51a, M51a, or NGC 5194) is an interacting[6] grand-design[7] spiral galaxy that is estimated to be 23 ± 4 million light-years from the Milky Way Galaxy[3] in the constellation Canes Venatici. It is one of the most famous galaxies in the sky.[8] The galaxy and its companion (NGC 5195) are easily observed by amateur astronomers, and the two galaxies may even be seen with binoculars.[9] The Whirlpool Galaxy is also a popular target for professional astronomers, who study it to further understand galaxy structure (particularly structure associated with the spiral arms) and galaxy interactions.
Imaging:
Exposure: 90min (9x10min subs) at 2x2bin using CLS Filter
Guiding: 6 sec exp at 2x2 bin
Equipment:
CCD Camera
AT10RC
Clements Focuser & Van Slyke multi-port
Off-axis guider w/ST402 camera
AP1200 mount
SW:
Maxim DL V5, FocusMax, CCD-Autopilot V4, Sky6, Robofocus, Pulseguide V1.37, Photoshop CS4 (using Astro-Tools V1.6, DSO Enhance action)