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| physical object > artifact > device > instrument > telescope > electromagnetic telescope > reflector > Newtonian |
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| Newtonian | ||||
| subject | fact | |||
| Newtonian | has secondary mirror shape plane |  |
| has primary mirror shape concave paraboloidal | | |
| has definition A class of reflecting telescope developed by Sir Issac Newton with a paraboloidal primary mirror and a small, plane secondary mirror at 45°; to deflect the focus of the primary to a position outside the tube near the top of the telescope. | | |
| is a kind of reflector | | |
| reflector | has mirror maker the person, company or institution that created the mirror | |
| has mirror type material and other engineering details | | |
| has mirror diameter equal to aperture (except for Schmidt which has aperture smaller than mirror diameter) | | |
| has aperture or primary mirror diameter | | |
| telescope | has wavelength sensitivity | |
| has angular resolving power | | |
| has effective diameter | | |
| has focal ratio | | |
| has operator | | |
| has purpose observe celestial objects | | |
| has location | | |
| artifact | has creator | |
| has creation date | | |
| has owner | | |
| physical object | has angular momentum | |
| has mass | | |
| has velocity | | |
| has momentum | | |
| has temperature | | |
| has volume | | |
| has extent | | |
| has material | |
Kinds of Newtonian :
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