Saturday, November 25, 2006

M33, The Triangulum Galaxy Returns

When last we saw M33, I was calling it a learning image. Well, I've done some learning, but still have some more to go.

This one's 45 x 60 sec. I'm getting the periodic error trained out of the LX200 mount, so the stars aren't long streaks like they had been. I probably could have shot 90 or 120 seconds subs--the image would look better if I did. I'm still working on autoguiding, too, which will make even longer subs possible. My polar alignment is getting closer; I've iterative aligned the wedge as best as possible, but there's still some N-S drift, which means there's probably some field rotation, too. Neublosity's align and rotate is helping out here by taking out the rotation between subs. I'll eventually learn how to drift align--I think I'm getting close.

Still my regular setup of 10" LX200 Classic @ f/6.3 and the stock Digital Rebel XT.

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