Bortle scale for those with observatories?
Posted 20 November 2012 - 05:17 PM
Clear Dark Skies
Alt 518ft ASL
Posted 21 November 2012 - 06:55 PM
I'll give it a 4 at the home observatory (44-42-38, 69-46-59) but less than an hour away from 3 at a camp.
Posted 22 November 2012 - 07:22 PM
Posted 23 November 2012 - 03:29 AM
Posted 23 November 2012 - 04:40 AM
Posted 23 November 2012 - 09:49 AM
Posted 23 November 2012 - 11:04 AM
Posted 23 November 2012 - 11:14 AM
There's really no noticeable light dome from Cedar City (yet), and Milford is 6 miles north and only has about 1500 people. Nearest traffic light even, is 30 miles away in Beaver (Butch Cassidy's home town).
Most of the times I set up at the site its late Spring or Summer, and the local farmers sometimes run their tractors over night, and their high beams are pretty bright, even if they're a mile or more away. So I'll often try to set up behind an obstruction (it's pretty flat out there!), or park the car between my scope and the road (a couple hundred feet away, at least).
So, it's probably a 2 there, and could easily be darker when the tractors are in the barns! I have seen the zodiacal light and the gegenshein from there, but I've never thought to check for Milky Way shadows.
Posted 24 November 2012 - 09:22 AM
Posted 27 November 2012 - 01:52 PM
Four miles north of downtown baltimore - an 8.
Are you able to observe much? What kind of telescope?
Posted 28 November 2012 - 05:41 PM
Posted 05 December 2012 - 01:32 AM