- 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 football quarterback who pla**** in the
National Football League (NFL) for
eight seasons...
- 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
First 50 Years, New York: Sterling, p. 178, ISBN 978-1-4027-5208-7.
Bortle, J., "The
Bright Comet Chronicles", harvard.edu,
retrieved 2008-11-18. Comet...
-
entire world. The
Bortle scale is a nine-level
measuring system used to
track how much
light pollution there is in the sky. A
Bortle scale of four or less...
- park is the
darkest sky for any
state park site in Oklahoma; the site is a
Bortle 1 zone, thus
making the park a big
attraction for
astronomers to view the...
-
horizon are to all
intents and
purposes unobservable.
Bortle, John E. (February 2001). "The
Bortle Dark-Sky Scale". Sky & Telescope. Sky
Publishing Corporation...
-
Lausten 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...
