4 February 2005

Observing Location	Navy Pier, Chicago, IL
Observational Period	2015-2045 CST
Atmospheric Conditions	Seeing was a little better to the east tonight but nothing could be seen to the west. It was another mild night.
Instruments	Naked-eye observing
Observing Party	Charlie Ridgway Eric Russell

Naked-eye Limiting Magnitude Observations	Star Magnitude α CMa Sirius -1.50 Alnitak ζ Ori 2.07 Alnilam ε Ori 1.70 Mintaka δ Ori 2.25 γ Ori Bellatrix 1.60 α Gem Castor 2.00 β Gem Pollux 1.16 γ Gem Alhena 1.90 Saturn -0.03

Target	Adler Planetarium Public Observing
Constellation
Category
Time
Comments	I had planned to go to this event but didn't get off work until 2000 and still had to get dinner so the economics just weren't right for it. The Adler holds a public session the first Friday of every month. It costs $15 to get in but you have access to the whole planetarium and unlimited sky shows from 1600 or 1700 until 2200 CST. They have telescopes set up somewhere. The sky wasn't clear enough to make it worth while that night either.