April 12, 2008
April 12 video "Chrysalis Formation"
This is a time-lapse video of two monarch caterpillars turning into chrysalides on our house number sign. We have about two dozen chrysalides around our yard. Our "butterfly weed" (Asclepias tuberosa) bushes are completely bare of leaves and small stems.
Taken at one frame every two seconds (0.5 fps). 30 fps displayed rate / 0.5 fps taken rate = 60x speedup.
April 11, 2008
Monarch chrysalis and caterpillar
Monarch caterpillar
Monarch chrysalis
March 23, 2008
March 6, 2008
Voters Petition for Presidential Science Debate.
March 2, 2008
February 17, 2008
A combination of four 30-second exposures of the International Space Station as seen from Sugar Land, Texas at around 7:37 CST. Taken with a Canon 30D at ISO 400, f/5.6 with a 10-22mm lens. The right side of the image is looking west and the left side of the image is looking south.
February 15, 2008
The Cave Without a Name
The Cave Without a Name
The Cave Without a Name
February 14, 2008
A tone-mapped, high dynamic range image of Enchanted Rock.
A tone-mapped, high dynamic range image of Enchanted Rock.
February 2, 2008
December 16, 2007
December 9, 2007
November 24, 2007
October 29, 2007
October 20, 2007
A green tree frog (probably Hyla cinerea) and many nectar-eating hawkmoths were visiting our backyard.
September vacation to Wyoming (Jackson Hole, Grand Teton National Park, Yellowstone National Park)
September 9-14, 2007
August 28, 2007
Early morning lunar eclipse
Near totality.
- Camera: Canon 30D
- Lens: 28-105mm f/3.5-4.5 II USM
- I used a lightweight tripod for all shots.
- All shots are cropped
- ISO: 1600
- Focal length: 105mm
- Shutter speed: 1/6 sec
- Aperture: f/6.3
- Mirror lock
- Self-timer
Totality.
- ISO: 1600
- Focal length: 105mm
- Shutter speed: 1.0 sec
- Aperture: f/6.3
- Mirror lock
- Self-timer
Totality.
- ISO: 1600
- Focal length: 105mm
- Shutter speed: 0.8 sec
- Aperture: f/6.3
- Mirror lock
- Self-timer
August 18, 2007
We went to the Houston Museum of Natural Science and the Houston Children's Museum.
August 10, 2007
May 19, 2007
April 22st, 2007
Brazos Bend State Park. We saw 9 alligators.
April 8th, 2007
March 3rd, 2007
Tried to take some photos of the lunar eclipse on March 3rd, but it was cloudy to the East so I took this shot to the West instead. This photo has been artificially enhanced somewhat (via Canon Digital Photo Professional's RAW editor).
- Aperture: f/8.0
- Shutter speed: 4.0 sec
- ISO: 100
- Exposure Bias: -1.00 ev
- Focal length: 10.0mm
- Lens: Canon EF-S 10-22mm
- Camera: Canon 30D
A shot to the East. That is the moon--it is overexposed so you cannot see a little chunk of the Earth's shadow on it. This photo has been artificially enhanced somewhat. (via Canon Digital Photo Professional's RAW editor).
- Aperture: f/5.0
- Shutter speed: 8.0 sec
- ISO: 400
- Exposure Bias: +0.67 ev
- Focal length: 40.0mm
- Lens: Canon EF 28-105mm f/3.5-4.5
- Camera: Canon 30D
