Quote:
Originally Posted by evltoy
Hi All,
I notice baader have 2 grades of solar film available
OD 3.8 "Photo" Film
OD 5.0 "Safety: Film
I suspect the cheaper OD 5.0 Safety film is used in most solar filter caps labeled baader film.
Has anyone had any experience with the two types of film for both visual and imaging? Is there a noticeable difference when imaging between the two?
Cheers
Wayne
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Hi Wayne,
I use both - the 5.0 visual stepped down with a mask to about 3" and the 3.8 full aperture for imaging on a 12.5" f/5 reflector.
I already had the 5.0 and for visual stuff it's fine stepped down.
The 3.8 clearly has a higher transmission and the reason I use it for imaging at full aperture.
Without knowing your telescope, I guess you can go full aperture 5.0 which gives you more light overall in any case.
Hope it helps.
John K.