IR Photography

[asterroc]

I tried out some IR photography this weekend (after a post on UV photography by txtriffidranch the other day). In the sequences below the cut, I have three images: normal visible light (technically, representative false color), a black and white version of the visible light image, and an IR black and white version. (I used an IR filter which blocked out all but the reddest of visible light and of course didn't block IR. Digicams are sensitive to a bit of the IR spectrum, so it sensed both the red and the IR and that became the image). If you want more explanation of the phenomena, I posted on my science blog about it.


From top of Mt. Holyoke, Skinner State Park, looking southwest.




Communications shack atop Mt. Skinner

Comments

[zandperl.livejournal.com]

I guess that means that both the red and blue sensitive pixels are also sensitive in IR. I'm a bit surprised.

FWIW it's my understanding that commercially available digicams generally don't use CCD technology, but CMOS. I'm not too clear about the distinction between the two, though I'm under the impression that until recently CCDs were preferred for astronomical use. I'm planning to grill a couple astronomer friends of mine about it, but if you know more than Wikipedia says I'd love to hear.