Re: [APML] Tech Pan shot

[George Anderson <tillerman1@videotron.ca>]

Oh yes, and last but not least,thanks for the compliments and advice on
TP and H-Alpha (both past and present). I have hard and softcopies of
your "Poor mans schmidt" down here.
I figure I have about 145 feet of TP left. At six shooting frames per
hypered roll I should have it all sussed out before I run out. Then I'll
just have to figure out what to do with the forming gas.
So far I haven't had any luck with hypering anything other than TP.
All of the Ilford, Bluefire, Kodak T-Max 400, and Forte films which I
have tested just fog up, and still have the same reciprocity failure
rate (or worse in a few cases).
I am considering writing Kodak's B&W R&D division (before it gets shut
down) to ask if they know what compounds in TP are responding to the
hypering process which are not present in most B&W films.

George

Clear skies and good health

spampit wrote:
> 
> Nice one George!
>         It looks like you have got your hypering times figured out. There is
> a bit of vignetting on the left and right sides of the image but nothing
> major. For your next trick, have you considered an h-alpha filter? It will
> allow you to get more detailed shots like:
> http://www.astrofoto.ca/john/cygnus-st8.htm (digital) or
> http://www.astrofoto.ca/john/moonlight.htm  (tech pan)
> 
> Focusing can be tedious but I have a short write-up on how to get focus
> nailed at http://www.astrofoto.ca/john/ha.htm . These filters also allow you
> to shoot when the moon is up. Exposure times are long though!
> 
> John Mirtle
> Calgary, Ab. Canada
> 
> -----Original Message-----
> From: astro-photo-bounces@seds.org [mailto:astro-photo-bounces@seds.org] On
> Behalf Of George Anderson
> Sent: Sunday, July 31, 2005 10:02 PM
> To: APML
> Subject: [APML] Tech Pan shot
> 
> I finally have a TP shot worth sharing.
> http://astrofilm.blogspot.com/
> At 18 minutes it could have done with more exposure and a little better
> guiding.
> Hope to re-shoot this week with slightly different framing.
> 
> George Anderson
> Montreal Canada
> Clear skies and good health
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