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National Geographic 76/350 18-117x76

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National Geographic 76/350 18-117x76 Details

National Geographic 76/350 18-117x76
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National Geographic 76/350 18-117x76 Specifications

ManufacturerNational Geographic
Telescopes seriesNational Geographic Reflectors
Made in-
In production since-
Warranty5 years
SKU9015000
Optical design of telescope Newtonian reflector
Lowest (useful) magnification. 19.8471x
Highest (useful) magnification. 129.006x
Field of view - FOV... 0m/1000m
Apperent FOV (angular).
Optical tube size - diameter95mm
Optical tube length-
Optical tube weight-
Aperture. 84.0894mm
Focal length. 385.9152mm
Focal ratio. 5.0896
Eyepiece 1 - Focal Length20 mm
Eyepiece 1 . magnification18 x
Eyepiece 2 - Focal Length6 mm
Eyepiece 2 . magnification58 x
Eyepiece 3 - Focal Length-
Eyepiece 3 . magnification-
Light-gathering power. 130.5599x
Limitting stellar magnitude. 13.4654
Rayleigh Resolution. 2.0153Arc seconds
Dawes Resolution. 1.6941Arc seconds
Secondary mirror size/diameter. 125.7618mm
Secondary mirror obstruction (by diameter). 125.6981%
Secondary mirror obstruction (by area). 6.25%
Image capturingNo
Photo adapterNo
Mount type of buildDobson
Tripod compliantNo
Type of tripod-
Tripod material-
Min. height.0mm
Max. height.0mm
Software for Stellar NavigationPC Planetarium
GoTo Telescope Control No
GoTo Telecope Language-
Telescope GoTo control interfaces-
Telescope Alignment method -
Integrated GPSNo
Tracking No
Track rate -
Track mode Manual
Telescope Guiding -
Slow motion controller No
Slew Speed -
Com. Port-
Remote Hand ControlNo
ColorBlack
Power Supply Unit-
Energy consumption.0W
Lens coatings Multicoated
Type of Focuser1.25"
Eyepiece barrel size1.25'' / 31.75 mm
Eyepiece angleSide mounted
Barlow diverging lens 2x
LevelNo
Total gear weight.1.92kg
Finder - Scope No
Recommended forBeginners
Suitable for observingMoon, Planets

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