Re: Astronomy Pinhole Picture of the Day
Yes, the color moon images were done with Fujichrome (inkjet prints). In that series there are also 2 triptychs of the moon that are cyanotypes, and the source of those were b/w negatives.
The solargraphs were made with Ilford VC paper and I was disappointed with the color in those (after waiting 6 months to see the results!). I've since been trying out different papers at short exposures of about a week or so. Different papers do give different results.
On Jan 30, 2009, at 4:38 PM, Weber, Scott B wrote:
Greg, The color images of the moon, are they on color film? -----Original Message----- From: Gregg Kemp [mailto:email@example.com] Sent: Tuesday, January 27, 2009 5:36 PM To: firstname.lastname@example.org Subject: Re: Astronomy Pinhole Picture of the Day Careful on the scanning - each pass through the scanner does tend to fog the negative a bit. Also, if you set the scanner at a high enough resolution that your scanner pauses partway through the scan, you'll likely see a fogged "step" in the scan from there on. I've been using paper negatives of about 5x7 inches, and then scanning at 24 bits, 600 dpi. For my particular scanner, if I scan higher than that, the scanner pauses and the final scan shows a distinct break between the two parts of the scan. I have six cameras planted until June 21st, soaking up the rays. Run stuff. Here are some scans from last year, but they are mixed in with overnight pinhole photos of the moon: http://greggkemp.com/simpleviewer/lunar-solar/ images # 8 - 12 are pinhole solargraphs. Gregg On Jan 27, 2009, at 4:26 PM, Andy D Duncan wrote:The scan doesn't affect the "negative" because the light from the scan is just week enough and the pass is just short enough that the print is unaffected. Andy www.andydduncan.com On Jan 27, 2009, at 12:44 PM, Ron Flory <RFlory@mulkeyinc.com> wrote:Thanks for the weblog link. Okay, stupid question but I must ask: Everything makes sense except the scanning... The paper neg is thus exposed to bright light as it's being scanned. What if anything does this do to the neg?? From: Robert Young [mailto:email@example.com] Sent: Tuesday, January 27, 2009 12:53 PM To: firstname.lastname@example.org Subject: RE: Astronomy Pinhole Picture of the Day6 month exposure. The photographer must have used a lead plate asan NDfilter. http://antwrp.gsfc.nasa.gov/apod/ap090115.html -- Jon Lybrook Intaglio Editions http://intaglioeditions.com 303-818-5187Should also have mentioned this link (mine) : http://rwyoung.wordpress.com/2008/03/19/long-exposure/ Rob