Labs Instead of using a lab manual, each week’s astronomy labs will be posted here the week before the lab. Check the “Schedule” section on this web site to see which labs to prepare for. Be sure to be prepared for both the indoor and outdoor labs! Also check the Learnlink lab conference for last minute changes. Predicting Eclipses Previous Labs: Stellar Spectra Stellar Magnitude and Color Viewing through the 24-inch Telescope Determining the Mass of Jupiter The Planisphere: Winter Stars The Celestial Sphere and Star Atlas Observing the Moon The Celestron Telescope Scale of the Solar System Fernbank Science Center The Planisphere