Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
telescope design
|
| gptkbp:advantage |
portable
easy to use not suitable for astrophotography manual tracking required |
| gptkbp:characteristic |
simple construction
box-like wooden mount |
| gptkbp:commonApertureRange |
6 to 30 inches
|
| gptkbp:focus |
focuser
|
| https://www.w3.org/2000/01/rdf-schema#label |
Dobsonian telescope design
|
| gptkbp:influenced |
modern amateur telescope making
|
| gptkbp:influencedBy |
gptkb:Newtonian_telescope
|
| gptkbp:introducedIn |
1960s
|
| gptkbp:inventedBy |
gptkb:John_Dobson
|
| gptkbp:mountMaterial |
gptkb:particle_board
plywood |
| gptkbp:notableFor |
simplicity
low cost large aperture |
| gptkbp:popularFor |
amateur astronomers
|
| gptkbp:primaryMirrorDiameter |
gptkb:glass
|
| gptkbp:primaryUse |
deep-sky observation
visual observation |
| gptkbp:secondaryMirror |
flat diagonal mirror
|
| gptkbp:telescopeType |
gptkb:Newtonian_reflector
|
| gptkbp:type |
altazimuth mount
|
| gptkbp:bfsParent |
gptkb:San_Francisco_Sidewalk_Astronomers
|
| gptkbp:bfsLayer |
7
|