Saturday, October 28, 2006

Large aperture observation

I borrowed a PST etalon from my friend and tried some experiments today.

The most exciting one is with a 6.5" ERF, but I only have a C5 on hand... so, my observation is done with 5"!!! This is definitely fun for H-alpha at this aperture!

First one, C5 full aperture at f/10, ~2000 frames stacked:

Close up:

Another close up, more carefully processed:


All of the prominences:

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