Thanks Marc. There's a lot of small targets like this I would like to image, but they need a lot more focal length. Do you think an 8" RC would work with a DSLR? It's just that due to their slow F ratio I didn't consider them a good match for a noisy DSLR, unless maybe in winter. Minimum capture time would be 4 hours to equal the F4's 1 hour. Of course i would be guiding. No more 30 second subs.
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