We went on a Tuesday in January knowing no guided tour was available and arrived with only a couple cars in the parking lot. After spending a good amount of time in the visitor center we headed to the 200 inch Hale telescope. Shortly after walking the 70 steps to the telescope, a large group of firefighter 'hotshots' arrived and a docent came to give an excellent talk. Our group of four thoroughly enjoyed the visit.
If you own or manage Palomar Observatory, register now for free tools to enhance your listing, attract new reviews, and respond to reviewers.