I went to the Glacier Point star party in Yosemite Nat. Park last night, the last one here of the Summer. Being Labor Day weekend, it was very crowded. Although I am not a member of the hosting astronomy club, they graciously allowed me to set my 12.5" Dob near their telescopes. They set up in and around the Glacier Point Amphitheater. This is a beautiful place, with great views of many of the park's landmarks visible during the day. The altitude here is a little over 7200 feet and the nighttime sky is Bortle 2 darkness (Bortle 1 being the darkest). The sky to the west is obscured by hillside and trees. We had clear skies, with almost no wind.
Setting up in or near the amphitheater is a little difficult because the Glacier Point parking area (with a limited number of parking spaces) is not close. There is a dirt fire road leading to the amphitheater you can use to unload from, then go park your vehicle. Not easy to load there after dark though, without using headlights. So, when I was through observing, I used a dolly to take my telescope and equipment back to my car.
As I said, it was crowded with tourists, many not familiar with stary party etiquette. But the crowd eventually thinned out. All things considered, I had a good time using my telescope under dark skies.
Edited by acochran, 01 September 2019 - 05:09 PM.