MDM Observatory: Day 4

Plugging along merrily!

Every 12 hours I have to refill the instrument dewer with liquid Nitrogen.  This keeps the detector (CCD) VERY cold.  Nitrogen is liquid at -196 celsius, and the instrument usually stays about -120 celsius.  We want the detector cold so that there is no noise added to any images we take.

I’m getting into a good groove, and even checking out my spectra.  About 20 minutes of exposure will create that graph! cool.