Dean W. Armstrong

Ah drat. A slashdot article appeared about some poor lady in Maine broke a compact fluorescent lamp and freaked out about the small amount...

The ambitious Japanese asteroid project, Hayabusa , has released its data archive. The asteroid Itokawa was the target; whether they succes...

The Ryerson Astronomical Society sponsored a trip up to Yerkes Observatory this weekend. We split the 60-odd visitors into three groups a...

The Bad Astronomer is reporting the ESO has discovered a terrestrially-sized exoplanet . It seems the ESO hasn't released the embargo ...

A press release recently reported research that claims biodiesel will cause more greenhouse gas effect than using petroleum oil. The gist ...

I cut a window out of a piece of polycarbonate to replace the IR-block filter in the modified Canon S300. It's 1.0mm thick, and the inf...

The two-layer color negative film sandwich is too strong of a filter for the IR modified Canon S300. It produces a virtually monochrome ima...

A black felt hat, when seen in the near-infrared, is quite reflective. This was taken with the Canon S300, with no IR-pass filter. It show...

I've decided to increase posting frequency at the expense of creating fully developed and finished projects. A number of things I'v...

Take a look at Wikisky , an impressive Web 2.0 project from Canada. Astronomy is one of those fields that has always been obsessed with cat...

Surely you've read the news story about a Chilean jet narrowly missing space debris near New Zealand. I can safely say, as the story i...

The waxing crescent Moon and Venus appeared in the unusually clear evening skies at Chicago on Tuesday.

I've been bad about posting, so here is an image I assembled from a video taken of Mars on July 30th, 2003. The prominent peninsula to...

The gorgeous plumes of Ionian volcanos rise into the sunlight on this image taken from the New Horizons spacecraft as it sped past Jupiter. ...

Ken commented on the appearence of snow shadows in a Pennsylvanian forest and made an interesting insight: "the snow can actually be c...