limitingMagnitude

P62582 predicate

Indicates the faintest detectable level or threshold of an effect, signal, or quantity beyond which it can no longer be reliably observed or measured.

Observed surface forms (1)

Sample triples (8)

Subject Object
Hipparcos Catalogue V ≈ 12 via predicate surface "approximateMagnitudeLimit"
Hubble Deep Field about 30th magnitude in visible light
Palomar Observatory Sky Survey about 20 in red band
Palomar Observatory Sky Survey about 21 in blue band
Ptolemaic magnitude scale approximately sixth magnitude
Two Micron All Sky Survey H ~15.1 mag
Two Micron All Sky Survey J ~15.8 mag
Two Micron All Sky Survey Ks ~14.3 mag