Even though the weather has been insanely cold in Canada the past few weeks, there is an upside for astronomers.  Call me a perpetual optimist, but when it’s colder in Canada than it is on Mars, you have to find some kind of silver lining. The upside is that colder weather and clear skies are sometimes synonymous.  I’m not a meteorologist so I don’t have any reason to go into detail as to why, but we have had a lot of cold, clear evenings.  I’ve had a chance to go outside and test my new DSLR camera, at least for a...