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Originally Posted by OzStarGazer
Thanks. 
Eyepiece projection as done in the old days sounds interesting too. I wonder if anybody is still using film and eyepiece projection these days? At least occasionally? |
I may just have to try it as I found an unused roll of Fuji 400 in the fridge.
Note you can still use eyepiece projection with a DSLR in lieu of an SLR. The advantage of digital is of course instant results.
With film you had to wait for the film to come back before you saw your results and found out whether exposure and focus were good and seeing was steady enough. Also with eyepiece projection you need to photograph in steady seeing and you cannot really see what the target is doing so it's more of a hit or miss procedure.
The moon is a good target for eyepiece projection as it is bright and exposures are shorter. However, I would still use the manual curtain/box in front of the telescope for exposures as little as 1/8 sec or best guesstimate for very long focal ratios and/or slower film. Tech Pan 2415 was the best B/W fine grain film but low ASA/ISO.