The Bortle Scale Image credit: The Bortle Dark Sky Scale according to the Big Sky Astronomy Club, via http://www.bigskyastroclub.org/lp_bortle.html Please leave this field emptyStay informed about ANSA pubic events and activities by subscribing below to our newsletter service. Your information will not be shared with any other party, and you can unsubscribe easily anytime.Check your inbox or spam folder now to confirm your subscription.
