Aha! So my initial surmise was correct. OK Tyler, so perhaps 12 twenty-minute exposures in one night would be a bit taxing- but it wouldn't take a man of steel. (Trust me, I've done it, and I'm hardly able to leap tall buildings in a single bound...of course, I was much younger then.) A man of aluminum, maybe, or at least bismuth. ;o) BTW, for any low-tech film photographers, most common b&w film emulsions are very red-sensitive. You can easily shoot emission nebulae on b&w film with a regular red filter from the suburbs, and get very good results without registering light pollution. It records Ha very well. --- Tyler Allred <tylerallred@earthlink.net> wrote:
Actually, each exposure was only 20 minutes, but I took lots of them to help smooth out the nebulous areas of the image.
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