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Astrophotography of Galaxies

M31, Canon 40D

M31, Canon 40D

Date: October 23, 2011

Telescope: Astro-Tech 66ED f/4.8 piggybacked on Orion 120ED on a polar aligned CG5 mount

Camera: Canon EOS 40D

Exposure: 10 5-min subframes (50 min total) ISO 800 guided with Meade DSI pro and Orion 120ED using PHD guiding.

Comments: Williams Optics 0.8x focal reducer, IDAS LPS P2 filter

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