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Achromatic refractor. Objective lens diameter: 90mm. Focal length: 900mm

Refractor
Optical design
90
Aperture – the diameter of the light-collecting lens (refractors and catadioptric) or mirror (reflectors) 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 69380
Brand Bresser GmbH, Germany
Warranty 2 years
EAN 4007922001012
Package size (LxWxH) 23x94x31 cm
Shipping Weight 10.55 kg
Description

The Bresser National Geographic 90/900 EQ3 classic refractor is equally good for astronomy and terrestrial observations. A long focal length, an achromatic lens, and maximum magnification of 675x make this telescope one of the best to show you the Moon in detail, Saturn's rings, giant storms on Jupiter, as well as bright emission nebulae, galaxies and star clusters if you observe on a dark, moonless night away from city lights. An equatorial mount is a bit complicated as compared to an azimuthal one, but is much more efficient and is suitable for astrophotography. The telescope comes with three eyepieces, a Barlow lens, and a lunar filter.

Features:

  • Telescope for advanced users
  • Achromatic refractor
  • High-quality optics
  • Suitable for deep-sky observations
  • Magnification up to 675x

The kit includes:

  • Bresser National Geographic 90/900 EQ3 Telescope
  • Equatorial mount
  • Counterweight
  • Focus wheel
  • Fastening ring
  • Red Dot finderscope
  • Eyepieces: H12mm, H20mm, SR4mm
  • 3x Barlow lens
  • Moon filter
  • Diagonal mirror
  • 1.5x erecting eyepiece
  • Aluminum tripod
  • Accessory tray
  • Rotatable star chart
  • User manual
Specifications
Product ID 69380
Brand Bresser GmbH, Germany
Warranty 2 years
EAN 4007922001012
Package size (LxWxH) 23x94x31 cm
Shipping Weight 10.55 kg
Optical design refractor
Optical scheme achromat
Objective lens diameter (aperture), mm 90
Focal length, mm 900
Magnification, x 45 — 675
Aperture ratio f/10
Eyepieces H20 mm, H12.5mm, SR4 mm
Eyepiece barrel diameter, in 1.25
Barlow lens 3x
Finderscope red dot
Filters included lunar
Tripod aluminum
Accessory tray
Telescope control manual
Mount equatorial, EQ3
Counterweights yes
User level beginners, experienced users
Observed object terrestrial objects
Reviews
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A quick guide for novice astronomers (16.12.2019)
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A telescope: how to start observing (16.12.2019)
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Frequently Asked Questions – Telescopes (20.04.2020)
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What can you see with a telescope (19.05.2020)
Colored and vivid images of galaxies, planets and star clusters entrance everyone who is fascinated by boundless space
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Find an interesting review on the history of the changes to a refracting telescope
How to choose a telescope (20.05.2020)
To make the process of choosing a telescope easier, we will tell you about the characteristics of the most popular types of telescopes today
A short guide to refractor telescopes: choose your equipment wisely (20.05.2020)
Learn everything you need to know about refractor telescopes to make the right choice
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