Mock Moon Moon Dog Paraselene Solar System Astronomy c90 Y/O Trade Ad Card

Description

Mock Moon Moon Dog Paraselene Solar System Astronomy c90 Y/O Trade Ad Card
NOTE:
THESE ARE NOT POSTCARDS
THEY ARE TRADE/ADVERTISING CARDS.
THEY ARE MUCH SMALLER THAN A STANDARD POSTCARD
AND
THERE IS ADVERTISING TEXT ON THE BACK!
THE CARD DIMENSIONS ARE APPROXIMATELY
2 5/8 '' x 1 3/8 ''  or  6.5 cm. x 3.5 cm.
ORIGINAL c90  YEAR OLD TRADE  ADVERTISING CARD
THE TITLE ON THIS CARD IS:
MOCK MOONS
A moon dog, moondog, or mock moon, (scientific name paraselene, plural paraselenae, meaning "beside the
moon") is a relatively rare bright circular spot on a lunar halo caused by the refraction of moonlight by
hexagonal-plate-shaped ice crystals in cirrus or cirrostratus clouds.
Moon dogs appear as part of the 22halo, roughly 10 Moon diameters outside the Moon. They are exactly
analogous to sun dogs, but are rarer because the Moon must be bright, about quarter moon or more, for the
moon dogs to be observed. Moon dogs show little color to the unaided human eye because their light is not
bright enough to activate the cone cells.
NOTE:
THE REVERSE SIDE HAS TEXT ABOUT THE IMAGE ON THE FRONT SIDE
THE CARD DIMENSIONS ARE APPROXIMATELY
2 5/8 '' x 1 3/8 ''  or  6.5 cm. x 3.5 cm.
NOTE:
THE IMAGE ABOVE IS LARGER THAN THE CARD
TO SHOW THE DETAIL.
SEE SCALED IMAGE ABOVE.
THIS CARDS IS NOT A MODERN REPRODUCTION
THIS CARD IS c90 YEARS OLD
IT IS NOT PERFECT AND THIS CARD MAY HAVE
SLIGHT PAPER LOSS
SMUDGING
ROUNDED CORNERS
SURFACE CREASE
NOTE: BAND ON LOWER RIGHT CORNER THRU TITLE
SEE THE IMAGES ABOVE!
11
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