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Apochromatic refractor. Objective lens diameter: 80mm. Focal length: 480mm

Refractor
Optical design
80
Aperture – the diameter of the light-collecting lens (refractors and catadioptric) or mirror (reflectors) that the telescope uses to collect light
480
Focal length – the distance from the primary lens or mirror to the point at which the light is focused
Availability

Product ID 75762
Brand Explore Scientific
Warranty 2
EAN 4007922002996
Package size (LxWxH) 32x39x21
Shipping Weight 9
Description

The three-lens design of the Explore Scientific ED-Apochromats provides everything an amateur astronomer desires – at a reasonable price. The construction with Hoya FCD-1 ED glass has two air spaces and provides a level of correction so superior to the two-lens constructions, that are common in this price class, that you will see the difference immediately.

This excellent optical performance teams up with a high precision mechanics – the result is a telescope on a level that is setting a new standard in it's price class. Astrophotographers will love this telescope – a optional field flattner is available and makes the telescope perfect even for cameras with a large chip format.

Features:

  • Three lens air-spaced ED-apochromat
  • Hoya FCD01-ED glass
  • Polystrehl of above 0.9
  • Backfocus: 165mm above 2" adaptor

The kit includes:

  • Optics with dovetail plate and finder slot
  • 2" Star Diagonal 99% reflectivity
  • Dust caps for front-lens and focuser
Specifications
Product ID 75762
Brand Explore Scientific
Warranty 2
EAN 4007922002996
Package size (LxWxH) 32x39x21
Shipping Weight 9
Optical design refractor
Optical scheme apochromat
Optics material ED
Objective lens diameter (aperture), mm 80
Focal length, mm 480
Aperture ratio f/6
Resolution threshold, arcseconds 1.6
Focuser 2'' rack & pinion with 10:1 fine adjustment
Additional dust protection caps for an open aperture and eyepiece holder
Optical tube material aluminum
User level experienced users
Observed object deep-sky objects, planets of the Solar System