The article discusses three main telescope types: refractors (best for bright objects, portable), reflectors (best for faint objects, larger apertures), and catadioptrics (compromise between aperture ...
https://siris-libraries.si.edu/ipac20/ipac.jsp?&profile=liball&source=~!silibraries&uri=full=3100001~!317342~!0#focus ...
To read remarks by William K. Hartmann - and other early graduates of the Lunar and Planetary Lab - on their beginning astronomy experiences at the UA, check out the ...
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