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Re: Filter Question

Started by jtrobins, 03/11/2005 12:02PM
Posted 03/11/2005 12:02PM | Edited 03/11/2005 12:27PM Opening Post
Here's a fun way to find out if you like this sort of thing. Order the cardboard spectrometer kit, or better yet the plastic assembled one, from these folks. www-dot-starlab-dot-com. Calibrate accoring to their instructions and just check out your filters. I have one of these, they are not precision instruments but do show the peaks on my filters quite nicely. The O-III filter should show a single peak.

Jim