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National Geographic Refractor 70/900 Telescope
National Geographic Refractor 70/900 Telescope
National Geographic Refractor 70/900 Telescope
$169.00
National Geographic Refractor 70/900 Telescope
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National Geographic Refractor 70/900 Telescope Product description
National Geographic Refractor 70/900 Telescope
General properties
| Telescopes series | National Geographic Refractors |
|---|---|
| Made in | - |
| In production since | - |
| Warranty | 5 years |
Optical properties
| Optical design of telescope | Refracting telescope |
|---|---|
| Lowest (useful) magnification. | $49.62 |
| Highest (useful) magnification. | $371.58 |
| Optical tube size - diameter | - |
| Optical tube length | - |
| Optical tube weight | - |
| Aperture. | $14.11 |
| Focal length. | $900.00 |
| Focal ratio. | $14.16 |
| Eyepiece 1 - Focal Length | 4 mm |
| Eyepiece 1 . magnification | 225 x |
| Eyepiece 2 - Focal Length | 12 mm |
| Eyepiece 2 . magnification | 75 x |
| Eyepiece 3 - Focal Length | 20 mm |
| Eyepiece 3 . magnification | 45 x |
| Light-gathering power. | $110.64 |
| Limitting stellar magnitude. | $13.28 |
| Rayleigh Resolution. | $2.18 |
| Dawes Resolution. | $1.84 |
Recording properties
| Image capturing | No |
|---|---|
| Photo adapter | No |
Mounting properties
| Mount type of build | Multi-Purpose mount |
|---|---|
| Tripod compliant | Yes |
| Type of tripod | Adjustable |
| Tripod material | Aluminium |
Navigation properties
| Software for Stellar Navigation | - |
|---|---|
| GoTo Telescope Control | No |
| GoTo Telecope Language | - |
| Telescope GoTo control interfaces | - |
| Telescope Alignment method | - |
| Integrated GPS | No |
| Tracking | No |
| Track rate | - |
| Track mode | - |
| Telescope Guiding | - |
| Slow motion controller | yes, both axes |
| Slew Speed | - |
| Com. Port | - |
| Remote Hand Control | No |
Physical properties
| Power Supply Unit | - |
|---|---|
| Lens coatings | Fully Multicoated |
| Eyepiece barrel size | - |
| Eyepiece angle | 90° |
| Barlow diverging lens | - |
| Level | No |
Special features
| Finder - Scope | 6x25 |
|---|---|
| Recommended for | Beginners |
| Suitable for observing | Galaxies, Moon, Planets, Terrestrial |
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