Dean W. Armstrong

As rumored, here's the awesome Mars Phoenix image . An image later in the descent as the spacecraft nears the surface. Heimdall crater...

A fantastic wind shift and cold front passage last night dropped temperatures by twenty degrees Fahrenheit in the course of a few minutes. ...

You've seen the amazing image of Phoenix descending in the Martian atmosphere as taken from MRO's HiRISE. (As Emily Lakdawalla put...

One hour to go.

The last supernova in the galaxy was Kepler's star of 1604 in Ophiuchus. Or was it? You'd expect a supernova in a barred spiral o...

I got the camera working again, kinda of. It doesn't work with TWAIN enabled stuff. It will work just fine using Vuescan on Windows an...

I was perusing (as best as possible without reading Japanese) the currently released images of the Moon from the Japanese spacecraft Kaguya...

Tom Friedman points out the obvious stupidity of McCain's and Clinton's idea of a gas tax holiday for the summer.

In my attempt to remove the prominent vignetting which restricts the scanned area to 5x8 inches, I broke the camera. This was to be expecte...

The light was rapidly falling last evening and this was my last image, with a full open aperture, but it was still underexposed by about a s...

Compact Fluorescents are all hot right now. And it's Earth Week. I bought a floor lamp from Home Depot that used a single standard bulb...

The Ryerson Astronomical Society got SG funding for a weather station on campus, to get accurate weather data (which is really important in ...

Today I mounted an inexpensive IR blocking filter in front of the lens using a cardboard mount. It's ugly, but gets the job done. I di...

A great way to drive traffic to a site about web site statistics. Don't miss the powerpoint slides. Analytics according to Captain Kirk...

Click to enlarge any of these to the original size (the first image is actually only 50%). An early image with the prototype cardboard camer...