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angular-resolution × 43telescope × 12
observational-astronomy × 7
radio-astronomy × 7
photography × 5
optics × 5
hubble-telescope × 5
interferometry × 5
atmospheric-effects × 3
adaptive-optics × 3
the-sun × 2
mars × 2
space-telescope × 2
astrometry × 2
naked-eye × 2
parallax × 2
newtonian-telescope × 2
very-large-telescope × 2
black-hole × 1
the-moon × 1
galaxy × 1
astrophysics × 1
amateur-observing × 1
exoplanet × 1
distances × 1
