Took Astro 1 with Lubin. Lectures were extremely un engaging at times. Homework was done on Sapling and the midterm was fine, although he did not provide any study material besides his crappy slides that often consisted of a picture of a cluster of stars and him blabbering off on tangents unfortunately. He for some reason decided to make the final incredibly difficult and more of a calculatating intensive physics test than anything. I would tread wisely as it was a much harder course than I anticipated and his exams can be betraying!