deep-sky
Past our system
Deep-sky describes celestial objects beyond our solar system—galaxies, nebulae, star clusters, and other distant phenomena visible through telescopes.
Amateur astronomers distinguish deep-sky observation from viewing planets and the moon: I spent the night doing deep-sky photography of the Andromeda galaxy.
Deep-sky objects require dark skies and patience.
Nearest spiral galaxy
- Orion NebulaEmission cloud near Earth
- PleiadesStar cluster in Taurus
- Crab NebulaSupernova remnant, pincer-shaped
Instrument magnifying faraway objects
- nebulaInterstellar gas formation
- galaxyGravitationally bound stellar mass
- MessierAstronomer's deep-sky catalog
- eyepieceLens you look through
aperture · magnitude · star cluster · transparency · seeing · globular · planetary nebula · dark nebula
Imaging celestial objects
- stackingPlacing items vertically
- integrationCombining into a whole
- narrowbandLimited frequency transmission
- stretchingExtending muscles or material
histogram · broadband · mosaic · processing
Andromeda
Nearest spiral galaxy
- Orion NebulaEmission cloud near Earth
- PleiadesStar cluster in Taurus
- Crab NebulaSupernova remnant, pincer-shaped
telescope
Instrument magnifying faraway objects
- nebulaInterstellar gas formation
- galaxyGravitationally bound stellar mass
- MessierAstronomer's deep-sky catalog
eyepiece · aperture · magnitude · star cluster · transparency · seeing · globular · planetary nebula · dark nebula · supernova remnant
astrophotography
Imaging celestial objects
- stackingPlacing items vertically
- integrationCombining into a whole
- narrowbandLimited frequency transmission
stretching · histogram · broadband · mosaic · processing
deep-skyplanetary
Of or relating to worlds
solar system · solar · lunar · terrestrial · geocentric
deep, sky, deeper, deepest, deeply, deepen, deepens, deepened, deepening