Re: [APML] Speeding up film with cold weather

[Jerry Lodriguss <jml@astropix.com>]

>I don't have a way to measure it. The prints show it
>and after looking at the negatives just now, they not
>only show more nebulosity, but many more stars as
>well.

Ok, whatever works for your setup.




>I can't explain it, I ain't a genious. :-) The facts
>show that I can keep soaking up light for at least 5
>1/2 hours.


Or at least as long as the object is above the horizon. <G>








> > Perhaps the T/stop of your scope is much slower
>than
> > the f/stop. Maybe you
> > are closer to T/16.
>
>Would you have any idea how I could figure that out?


There was a thread on this, try searching the archives.

What kind of scope is it, an SCT?



>Sorry, but maybe it's the film. I've been using it for
>3 years now. It starts out more slowly than other
>films I compared it to (Fuji 800 and LE400). Way
>slower. But it never slows down, You keep getting
>these incremental increases in light gathering that
>match the exposure time. I expected it to drop off
>after a couple of hours, but it doesn't.


That would indicate that you are correct about it not having any 
reciprocity failure.




>Sorry I was slow responding, but it took me all day to
>get around to going through my negative box.


No problem.


Jerry





Astronomical photography: http://www.astropix.com




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