Thursday, July 19, 2007

Tiny Baby


This photo shows the tiniest baby I've ever seen. She weighed only 1# 6oz when she was born last month. Now she's up to more than two pounds and eating real food.

Tuesday, July 10, 2007

Phases of Venus


Here are five photos, merged into a single frame. Each of them is a picture of Venus, taken at the same magnification, about 50x, but on different days: May 29, June 18, June 25, July 6, July 10 and July 24. Notice how the planet appears to be getting larger, and the crescent shape is getting thinner. This may be the last photo I am able to take of Venus before it gets too close to the horizon. Notice how the apparent diameter has increased to more than double since I started.

These pictures are really poor quality compared to what it looks like with moving air currents and color refraction, but they capture the idea, and provide fascinating comparisons.

Saturday, July 07, 2007

Clavius - Moon Photo


Thanks to my friend Jerry, I'm learning astrophotography (and I know one major landmark on the moon). The landmark is a crater called Clavius. It is the second largest crater on the moon. This morning (at 4:00 AM) the visibility was excellent for this area, and the lighting was perfect for viewing Clavius, the large crater in the center of the photo.

The image has been rotated so it is oriented as seen by observers in the northern hemisphere, and it features a close-up view of the bottom (south pole) of the moon. The moon is at the beginning of the 4th quarter, so this moon phase will only be seen in the morning, before sunrise (or with a blue, daylight sky). Most importantly, the angle of the sun exaggerates the features of Clavius and the other craters near the center of the moon.