Bresser Junior 70/900 EL Telescope
Refractor
Optical design
70
Aperture – the diameter of the light-collecting lens or mirror that the telescope uses to collect light
900
Focal length – the distance from the primary lens or mirror to the point at which the light is focused
Availability
Product ID | 74299 |
Brand | Bresser GmbH, Germany |
Warranty | 2 years |
EAN | 4007922000848 |
Package size (LxWxH) | 100x31x18 cm |
Shipping Weight | 6.285 kg |
Specifications
Product ID | 74299 |
Brand | Bresser GmbH, Germany |
Warranty | 2 years |
EAN | 4007922000848 |
Package size (LxWxH) | 100x31x18 cm |
Shipping Weight | 6.285 kg |
Optical design | refractor |
Optical scheme | achromat |
Objective lens diameter (aperture), mm | 70 |
Focal length, mm | 900 |
Lowest practical power, x | 140 |
Aperture ratio | f/12.8 |
Resolution threshold, arcseconds | 2 |
Eyepiece barrel diameter, in | 1.25 |
Finderscope | optical, 6x25 |
Tripod | aluminum |
Tripod height (adjustable), mm | adjustable |
Accessory tray | ✓ |
Telescope control | manual |
Mount | alt-azimuth and equatorial |
Additional | 90° diagonal mirror included |
User level | elementary, beginners |
Assembly and installation difficulty level | extremely simple |
Observed object | terrestrial objects, planets of the Solar System |
Extended kit | ✓ |
References
and downloads
and downloads