Can you use park after hours for telescope astronomy? Do I need to purchase a pass or something?

The road running through the park is a public road used by nearby residents. There are no gates closing acesss to the park.

Yes!

Dont forget to say hi to the deer. I loved seeing them while driving past

My guess would be yes, assuming you're parking up near arch

No gates. And there are good places especially near the arch

Excellent news, thanks. Can't wait to get out there.

No pass needed

Yes you can use park after hours for telescope astronomy. No need to purchase pass

Yes you can use the park after hours , no pass or anything necessary