M51 – Whirlpool Galaxy (attempt 2)

m51_pr

Subject: M51 - Whirlpool Galaxy
Telescope: Celestron CPC 800
Camera: Canon Rebel T1i
Technique: 28 lights (30 seconds at 1600 ISO), 20 darks, 20 flats, 50 biases.
Prime focus. Manually stacked and post-processed with Photoshop.

This attempt at M51 proved to be much better than my first. After reducing my ISO, increasing my exposure time (probably a bad idea), and increasing my frame count, I was able to capture much more light with much less noise. I’m glad I was able to keep much of the color this time.

DSS still did not want to stack my frames, again probably due to my mount so I had to¬†manually stack them with Photoshop. I’m glad I was able to “save” these frames.

One comment to M51 – Whirlpool Galaxy (attempt 2)

  • Astrophotography  says:

    […] is my third attempt at the Whirlpool Galaxy. For my previous attempt, the polar alignment and focus were so far off that I had to manually stack them. My first attempt […]

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