IR in the desert

I took my new Canon 70D out for a little day hike in the desert and decided to see how it does with an infrared filter (a Hoya R72).  Here are some samples:

 This is a white light image showing the Moon rising over the hills nearby.  This exposure was made with my 75-300mm zoom at 75mm focal length with an exposure of 1/250 seconds at f/11, ISO 200.

This is the same composition with the Hoya R72 IR filter in place.  The exposure was 2 seconds at f/4, ISO 200.  I converted the original to B&W with the GIMP and a simple desaturate followed by a little curve stretching.

This is the original frame before desaturating the image.  The exposure was 2 seconds at f/2.8, ISO 400 with my 50mm f/1.8 lens on my 70D.

This is the same frame, desaturated and stretched a little with the curves tool in the GIMP.

This is the white light version of the above.  The exposure was 1/350 seconds at f/8, ISO 400 with my 50mm f/1.8 lens.

IR Canyon de Chelly, take 2

Here's another IR shot of Canyon de Chelly. This iamge was taken at 5.8mm focal length (37mm equivalent) with an exposure of 1.0 seconds at f/2.6, ISO 200 with a Hoya R72 filter on my Canon A570is.

IR Canyon de Chelly

This view of Canyon de Chelly was taken with my Canon A570is (not in stereo mode...) with a Hoya R72 filter. This image was taken at 5.8mm focal length (37mm equivalent in 35mm) with an exposure of 1.0 seconds at f/2.6, ISO 200.

IR domes

This shot of the Spacewatch 36 inch telescope dome with the 90 inch and 4-meter domes in the background was taken with a Hoya R72 filter and converted to B&W. The image was taken at 18mm focal length with an exposure of 5 seconds at f/8, ISO 400.

Infrared Telescopes

Some of the telescopes from last Saturday's star party are shown here. Most are looking at the sun which was getting low in the sky when I took this photo. This image was taken with the kit lens at 37mm focal length with a Hoya R72 IR filter and an exposure of 1.3 seconds at f/5, ISO 800.

Infrared Levy in B&W

Here's a black and white version of the previous image. I sorta like the colored version, but I know some people prefer to see the B&W version.

Infrared Levy

Saturday afternoon, I visited with David Levy at his "National Sharing the Sky Foundation" Star party. It was a great success with lots of telescopes and visitors. During the daytime, the filtered sun was the subject in most telescopes along with the nearly quarter phase moon. After sunset, the Moon would be the "star" along with Venus and other evening astronomical targets. Here, David sits next to "Apollo", a 6 inch telescope that has been recently reconditioned. This image was taken with the kit lens at 18mm focal length with a Hoya R72 IR filter. The exposure was 1 second at f/3.5, ISO 800.

Son in IR, B&W version

Here is yesterdays image, converted to B&W.

Son in IR

Got some new toys today - a 50mm f/1.8 Canon lens (the so called "nifty fifty") and a Hoya R72 IR filter. This image shows my son trying to ignore his dad while I was playing around with the new filter. While I had a B+W 092 IR filter, I had bought it for my earlier point and shoot digital and it was a 52mm filter, but my kit lens and 70-300mm zoom both use 58mm filters so this new R72 filter has 58mm threads. I had been led to believe that the 092 filter was equivalent to the R72, but initial exposure comparisons indicate that the 092 has more red transmission and does not have as strong an IR affect with my Canon 20D. This image was taken with the kit lens at 18mm focal length with an exposure of 1 second at f/3.5, ISO 800.