[APML] Alternate films

[George Anderson <georgea@cam.org>]

I did a brief search on the web for some of the smaller film
manufacturers and came up with a list of possible films for AP work.
Some of which may not be available in North America.

China Lucky Super GBR 200 & 400     Colour film, reds extend to about
665nm (anyone visitiing the great wall this fall?)

Efke KB100          B&W film extends to about 680nm    Available in USA
Efke PL100          B&W film extends to about 680nm    Available in USA

Ilford Delta 400 & 3200 B&W film extends to above 670nm  Available in
USA Might have same low light
                        death as SFX 200
Ilford SFX 200          B&W film, wants to be shot in full daylight to
achieve claimed red sensitivity
                        I will try hypering this in three or four weeks
when my forming gas gets here. 

Forte Pan 200 & 400    B&W film extends to 680           Available in
USA

FomaPan 400            B&W film extends to 680  Would need hypering
testing, manufacturer admits a 
                       schwartzchild effect requiring an 8 times
increase of exposure at 100
                       seconds 

Plus there are two others (colour films) where the manufacturer did not
have spectral sensitivity on their website. I have e-mailed them and
asked for technical details and explained that it was for
astrophotography and that extended red response was needed.

George Anderson
Montreal Canada

Clear skies and good health
_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo