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OBSERVATIONAL ASTRONOMY
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• absolute magnitude
• airglow
• Antoniadi scale
• aperture
• aperture synthesis
• apparent magnitude
• appulse
• asterism
• astrometry
• astronomical extinction
• Bayer designation
• Big Dipper
• broadband photometry
• capture area
• circumpolar star
• comparator
• constellations
• dawn
• deep sky object
• disk
• filtergram
• Flamsteed number
• infrared astronomy
• interferometer
• light pollution
• limb
• Little Dipper
• magnitude scale
• midnight sun
• naked-eye star
• noise
• Northern Cross
• occultation
• Orion's Belt
• radial velocity method
• radio astronomy
• seeing
• spectroscopy
• Square of Pegasus
• submillimeter band
• submillimeter wave astronomy
• Summer Triangle
• surface brightness
• Winter Hexagon
• Winter Triangle
• zodiac
Related categories
• OBSERVATORIES AND TELESCOPES• OPTICS AND OPTICAL PHENOMENA
• SPECTRA AND SPECTROSCOPY
Also on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History