Re: [APML] Will a real astrophoto film please stand up.

[astropix@att.net (Geoff Powers)]

 Jason writes:
> Is there anything that comes close to RG200? 
> Preferably medium format but interested in 
> 35mm as well...

 Hey Jason...

     As Bobby mentioned, WH Wang has shown excellent results with the Konica 'Centuria Super' 400... what no else has mentioned is this film is also available in 12 exposure, 120 rolls! Here's one of Wei-Hao's *medium format* mosaic images... see:

      http://www.ifa.hawaii.edu/~wang/gallery/picutres/m16_to_24.htm

     The advertised spectral response curves show strong sensitivity in red, peaking just before the 656nm line, but still well up the chart at the Ha line. Green and blue look well balanced for astro, and reciprocity seems promising, too. Here's Konica's data:

      http://konicaminolta.com/products/consumer/photo/pdfe/pdf/csuper400.pdf

     Finding this 'new' emulsion seems to be a problem... lot's of older stock, but no one in the US I searched had the new packaging... which is this latest emulsion, I imagine. Haven't tried lately to find it, may be a different situation now.

     If you find the right stuff, and give it a try... *PLEASE* let us know how it works !!!

 Hope This Helps...   :o)

--
 Geoff

http://home.att.net/~astropix/


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