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// 29.9.2023 GA4 add to cart // 29.9.2023 GA4 add to cart

National Geographic Automatic 90/1250 Telescope

National Geographic Automatic 90/1250 Telescope
National Geographic Automatic 90/1250 Telescope
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National Geographic Automatic 90/1250 Telescope Details

National Geographic Automatic 90/1250 Telescope

SCOPE OF DELIVERY

  • OTA
  • Mount
  • Steel tripod
  • 2 pieces 31.7mm (1.25") Kellner eyepieces (K-25mm, K-12,5mm)
  • LED viewfinder
  • built-in compass
  • Moon filter 
  • Astronomy Software
  • Star map
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National Geographic Automatic 90/1250 Telescope Specifications

ManufacturerNational Geographic
Telescopes seriesNational Geographic Catadioptrics
Made in-
In production sinceNo
Warranty5 years
SKU9062100
Optical design of telescope Catadioptric telescope
Lowest (useful) magnification. 12.8x
Highest (useful) magnification. 180x
Field of view - FOV... 0m/1000m
Apperent FOV (angular). 0°
Optical tube size - diameterNo
Optical tube lengthNo
Optical tube weightNo
Aperture. 90mm
Focal length. 1250mm
Focal ratio. 13.8
Eyepiece 1 - Focal Length25
Eyepiece 1 . magnification50
Eyepiece 2 - Focal Length12.5
Eyepiece 2 . magnification100
Eyepiece 3 - Focal LengthNo
Eyepiece 3 . magnificationNo
Light-gathering power. 165.3x
Limitting stellar magnitude. 99.7
Rayleigh Resolution. 1.5Arc seconds
Dawes Resolution. 1.2Arc seconds
Secondary mirror size/diameter. 0mm
Secondary mirror obstruction (by diameter). 0%
Secondary mirror obstruction (by area). 0%
Image capturing-
Photo adapter-
Mount type of buildAzimuthal
Tripod compliantYes
Type of tripod-
Tripod materialHeavy-Duty Stainless Steel
Min. height.0mm
Max. height.0mm
Software for Stellar NavigationNo
GoTo Telescope Control Yes
GoTo Telecope LanguageEnglish, French, German, Italian, Spanish
Telescope GoTo control interfaces-
Telescope Alignment method -
Integrated GPSNo
Tracking Yes
Track rate Lunar
Track mode Alt-Az
Telescope Guiding No
Slow motion controller -
Slew Speed -
Com. PortHand control
Remote Hand Control-
ColorGrey / Brown
Power Supply UnitAA
Energy consumption.0W
Lens coatings Fully Multicoated
Type of FocuserNo
Eyepiece barrel size1.25'' / 31.75 mm
Eyepiece angle90°
Barlow diverging lens No
LevelNo
Total gear weight.6kg
Finder - Scope Red Dot
Recommended forBeginners
Suitable for observingMoon, Planets

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