[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: [APML] New Film Test
At 12:54 28/02/02 -0500, you wrote:
>
>How about just using a H-alpha filter against white light to get a H-alpha
>source?
This wouldn't yield the single frequency spike of a true Ha emission but I
believe it would still give a good indication of a film's ability to record
Ha. I believe this is a good suggestion.
--Philip
Philip Perkins - philip@astrocruise.com
Wiltshire UK & Luberon France
Astrocruise - http://www.astrocruise.com
-- APML Archives at <http://astro.umsystem.edu/apml/> ---
Unsubscribe at <majordomo@seds.org>