Galaxies M51 & M101


Canon 10D & Orion ED80 Refractor

by Gary Honis

All images were taken from my backyard deck observatory with an Orion ED80 APO refractor equipped with a Celestron f/6.3 reducer providing an f/4.7 focal ratio. ED80 was piggybacked on a 10 inch Meade LX200. Images were autoguided using the software GUIDEDOG and a Toucam webcam. Image acquisition was automatic using DSLR FOCUS. Skies were clear with moderate light pollution and the ambient temperature was 10 degrees Fahrenheit. NEAT Image was used for noise reduction.

M51 Whirlpool Galaxy - Crop:

Sum stack of 35 one-minute exposures at ISO 1600.

M101 - Spiral Galaxy - Crop :

(NGC5474 is below it.)

Sum stack of 42 one-minute exposures at ISO 1600.

For more images taken with th ED80 and Canon 10D see:

02/08/04 --- M42 Great Orion Nebula & NGC 1973 - 77

02/16/04 --- Comet C/20002 T7 Linear

2/22/04 ----- Core of Virgo Galaxy Cluster, Galaxies M65, M66 & NGC 3628,Flame Nebula NGC 2024 & Horsehead Nebula B33 and Comet C/20002 T7 Linear