Todd Heather Alex   toddthahn.com

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 chrysalis and caterpillar

Monarch caterpillar

Monarch caterpillar

Monarch chrysalis

Monarch chrysalis


March 23, 2008

Heather and Alex


March 6, 2008

Voters Petition for Presidential Science Debate.

Science Debate 2008.


March 2, 2008

Alex


February 17, 2008

ISS in the sky

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

The Cave Without a Name

The Cave Without a Name

The Cave Without a Name


February 14, 2008

Alex

Enchanted Rock

Enchanted Rock

Enchanted Rock

A tone-mapped, high dynamic range image of Enchanted Rock.

Enchanted Rock

A tone-mapped, high dynamic range image of Enchanted Rock.


February 2, 2008

Alex

December 16, 2007

Alex


December 9, 2007

Alex


November 24, 2007

Alex


October 29, 2007

Alex


October 20, 2007

A green tree frog (probably Hyla cinerea) and many nectar-eating hawkmoths were visiting our backyard.


New Hope organ


September vacation to Wyoming (Jackson Hole, Grand Teton National Park, Yellowstone National Park)

September 9-14, 2007


August 28, 2007

Early morning lunar eclipse

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

Lunar eclipse

Totality.

  • ISO: 1600
  • Focal length: 105mm
  • Shutter speed: 1.0 sec
  • Aperture: f/6.3
  • Mirror lock
  • Self-timer

Lunar eclipse

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.

Todd and Alex

Butterfly

Moth

Butterfly

Heather and Alex

Butterfly

Alex

Alex

August 10, 2007

Alex

Alex Josef.


Summer Vacation in Wisconsin

Felda Reunion

McGlin Reunion


May 19, 2007

Alex

Alex Josef.


April 22st, 2007

Brazos Bend State Park. We saw 9 alligators.

Alligator

Todd and Alex

Brazos Bend

Pileated Woodpecker


April 8th, 2007

Alex


March 3rd, 2007

Sunset

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

 

Moon

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

Alex

Alex Josef.

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