Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
astronomer
|
| gptkbp:alsoKnownAs |
Refractor
|
| gptkbp:compatibleWith |
Mirrors
|
| gptkbp:component |
Eyepiece
Objective lens |
| gptkbp:historicalSignificance |
Yes
|
| https://www.w3.org/2000/01/rdf-schema#label |
Refracting Telescope
|
| gptkbp:improves |
Achromatic lens
|
| gptkbp:inventedBy |
gptkb:Hans_Lippershey
1608 |
| gptkbp:limitation |
Lens size limited by sagging
|
| gptkbp:notableExample |
gptkb:Lick_Observatory_refractor
gptkb:Yerkes_Observatory_refractor |
| gptkbp:popularFor |
17th century
|
| gptkbp:replacedBy |
Reflecting Telescope
|
| gptkbp:requires |
Alignment of lenses
|
| gptkbp:suffersFrom |
Chromatic aberration
|
| gptkbp:type |
Optical telescope
|
| gptkbp:usedBy |
gptkb:Galileo_Galilei
gptkb:Johannes_Kepler |
| gptkbp:usedFor |
Astronomy
Terrestrial observation |
| gptkbp:usedIn |
gptkb:Amateur_astronomy
Educational purposes |
| gptkbp:uses |
gptkb:Lenses
|
| gptkbp:bfsParent |
gptkb:Osservatorio_Astronomico_di_Bologna
gptkb:Schmidt-Cassegrain_Telescope |
| gptkbp:bfsLayer |
7
|