ASTR 5L - Astronomical Observing Laboratory Degree Applicable, CSU, UC, IGETC Corequisite: ASTR 5 or ASTR 5H or ASTR 7 or ASTR 8 (May have been taken previously) Practical experience in astronomy including use of telescopes and demonstrations in the college planetarium. Field trip or evening instructor lead observing sessions with the telescopes are required.