Definitions from Wiktionary (optical double)
▸ noun: (astronomy) A star that appears as a double due to an optical illusion; in reality, the stars may be far apart from each other.
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▸ noun: (astronomy) A star that appears as a double due to an optical illusion; in reality, the stars may be far apart from each other.
Similar:
double star,
visual binary,
optical axis,
forced perspective,
limb darkening,
aberration of light,
gravitational mirage,
Olbers' paradox,
field star,
Penrose triangle,
more...
Opposite:
Phrases:
▸ Words similar to optical double
▸ Usage examples for optical double
▸ Idioms related to optical double
▸ Wikipedia articles (New!)
▸ Words that often appear near optical double
▸ Rhymes of optical double
▸ Invented words related to optical double