TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

BACKGROUND SKY [1 record]

Record 1 2003-07-21

English

Subject field(s)
  • Astrophysics and Cosmography
CONT

This is an issue related to all observatories, how sky background degrades ability to detect faint stars for long CCD exposures.

CONT

Since the brightness in the image of the star is from both star light and background sky light, this will include subtracting the sky light in order to get the brightness of the star alone.

French

Domaine(s)
  • Astrophysique et cosmographie
DEF

Ensemble des rayonnements émis par des sources non résolues et non détectées individuellement par l'instrument astronomique utilisé.

OBS

Un fond de ciel est caractéristique du domaine de fréquences de l'instrument utilisé.

OBS

Pour un observateur terrestre, le fond de ciel comprend, en particulier, la lumière zodiacale, les émissions atmosphériques telles que la lumière du ciel, les étoiles et autres astres non résolus et, de jour, la lumière solaire diffusée par l'atmosphère.

Spanish

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