| Bent-yoke equatorial telescope | has mounting bent-yoke equatorial |  |
| is a kind of equatorial telescope |  |
| Earth based telescope | has mounting manufacturer the person, company or institution that constructed the mounting |  |
| has longitude in degrees, minutes, seconds (E or W) |  |
| has latitude in degrees, minutes, seconds (N or S) |  |
| has altitude height above sea level in meters |  |
| has temperature ambient |  |
| telescope | has wavelength sensitivity |  |
| has angular resolving power |  |
| has effective diameter |  |
| has aperture |  |
| 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 volume |  |
| has extent |  |
| has material |  |