- The
Bortle dark-sky
scale (usually
referred to as
simply the
Bortle scale) is a nine-level
numeric scale that
measures the
night sky's
brightness of a...
-
Robby Blake Bortles (born
April 28, 1992) is an
American former professional football quarterback who pla**** in the
National Football League (NFL) for...
- John E.
Bortle is an
American amateur astronomer. He is best
known for
creating the
Bortle scale to
quantify the
darkness of the
night sky.
Bortle has made...
- celebrity, journalist, or athlete.
Frequent guests include Ryan Whitney,
Blake Bortles,
Blake Griffin,
Brooks Koepka, Mark Titus, Ryen Russillo,
Chris Long, Mike...
- The
Alabama Hills feature exceptional skies for
Central California. It is
Bortle class 2 or "average dark sky" site; this low
level of
light pollution meets...
-
Blake Bortles (2014–2018)...
-
horizon are to all
intents and
purposes unobservable.
Bortle, John E. (February 2001). "The
Bortle Dark-Sky Scale". Sky & Telescope. Sky
Publishing Corporation...
- the
Pillars of Creation.
Image total exposure of 15 hours,
taken from a
Bortle 7 in Nicosia,
Cyprus The
Eagle Nebula captured in the SHO
Hubble palette...
-
Laustsen et al., Pasachoff, Jones, van der Kruit, and
Hodge et al. See also
Bortle Dark-Sky Scale. The
bright center of the
galaxy is
located in the constellation...
-
April 17, 1988
Kushiro S. Ueda, H.
Kaneda · 28 km MPC · JPL 4673
Bortle 1988 LF
Bortle June 8, 1988
Palomar C. S.
Shoemaker · 11 km MPC · JPL 4674 Pauling...
