U of S | Mailing List Archive | alt-photo-process-l | Re: Astronomy Pinhole Picture of the Day

Re: Astronomy Pinhole Picture of the Day


  • To: alt-photo-process-l@usask.ca
  • Subject: Re: Astronomy Pinhole Picture of the Day
  • From: Trevor Cunningham <tr_cunningham@yahoo.com>
  • Date: Tue, 27 Jan 2009 16:21:13 -0800 (PST)
  • Comments: "alt-photo-process mailing list"
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and there goes the magic...
 
"somewhere between zero and one...everything else is exaggeration" - Anonymous



From: Andy Duncan <duncanad45@gmail.com>
To: alt-photo-process-l@usask.ca
Sent: Wednesday, January 28, 2009 12:33:50 AM
Subject: Re: Astronomy Pinhole Picture of the Day

He didn't use a ND filter at all. The image hasn't been developed.
No lets see if I can explain this in a logical manner.
Normal prints are exposed and then developed to bring the latent image through in a chemical reaction. With enough time and with intense light, an image will form on photographic paper, just like printing out paper.
What the photographer has done here, is left his camera outside from winter solstice to summer solstice, and through the 6 months, there has been enough light gather to bring an image through. After the 6 months had passed, the photographer then simply scanned the image that was on the paper.

Andy Duncan

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Andy D Duncan
208.227.6187
www.andydduncan.com/blog

On Jan 27, 2009, at 9:59 AM, Jon Lybrook wrote:

> 6 month exposure.  The photographer must have used a lead plate as an ND filter.
>
> http://antwrp.gsfc.nasa.gov/apod/ap090115.html
>
> --Jon Lybrook
> Intaglio Editions
> http://intaglioeditions.com
> 303-818-5187
>
>