Best paper

>
> Sorry for the delay in replying (nearly a month), been a bit on the busy
> side... Do you have a rough starting point for an exposure of a paper
> negative? I'm assuming that it's many times longer than a traditional
> film negative?
>
With a 0.4mm hole and 15 cm focal length, ie F/D 375, exposure time in
bright sun is 2 minutes with fiber, 4 minutes with RC.

JMB

JMB
http://www.astrosurf.com/telescopeamateur/
( 47.4830°N, 6.7670°E)

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Received on Mon Mar 8 18:58:29 2004