Near Matches
Ignore Exact
Everything
2
Aperture matters
dobsonian
Amateur Astronomer
Middle-aged
Buying Your First Telescope
Horsehead Nebula
Astrophotography
December 21, 2002
light gathering power
CCD
stargazing
photon
Names for Large Numbers
focal point
millisecond
Focal Length
Hubble Space Telescope
Magnification
Lens
Iris
Cistern
Aperture
retina
reflect
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