Bresser ED APO 80 mm f/6 FCD-100 Alu HEX Telescope Viewer

Highly corrected 80mm air-spaced triplet apochromat (with three lenses) and aluminium tube and a 2.5´´ high-precision HEXAFOC focuser.

- Apochromats are the ultimate choice in small to medium sized telescopes: the combination of compactness, transportability, very high image contrast and sharpness together with the possibility to make excellent astrophotos cannot be bested. The advances in glass manufacturing during the last few years have made true apochromats available to more astronomy enthusiasts than ever before. The new Explore Scientific FCD-100 Alu Hex represents another major improvement in this field - the overall correction (color and spherical) is setting new standards in this price class. The optical design shows a polystrehl value of 0,97 indicating a level of correction that is absolutely top of the line.

- This small excellent apochromat is a very versatile telescope: the fast f-ratio makes short exposure times possible. The high contrast and sharpness of the image provide breathtaking views of large objects like the North america nebula or the Andromeda galaxy as well as tack sharp planetary images. The telescope is lightweight and compact - the dew shield slides down the tube to minimize size for transportation. Revolutionary glass and precision manufacturing created a telescope that offers observing joy on the highest level. This does not only qualify this telescope as the ideal travel scope, it is also the perfect choice for fast observations and for astrophotography. The excellent 2,5´´ HEXAFOC focuser with 10:1 reduction is perfect for this - the large inner diameter of 65mm prevents vignetting by the focuser when the telescope is used for astrophotography with large sensors.

- These very popular EXPLORE SCIENTIFIC Triplet ED APO Refractors we do offer in 3 different product lines:

Essential Line:
- HOYA FCD-1 Glass lens, AL-Tube, 2.0´´ Rack&Pinion Focusser with 1:10, 2.0´´ Star Diagonal 99% Reflectivity (see Part No. 0112084(AL), 0112106(AL), 0112132(AL)), 0112155(CF + 3´´FT))

Professional Line:
- HOYA FCD-100 Glas lens, AL/CF-Tube, 2.5´´ HEXAFOC Focusser with 1:10, 2.0´´ Star Diagonal 99% Reflectivity (see Part No. 0112086(AL), 0112108(AL), 0112109(CF), 0112134(AL), 0112135(CF))

High-End Line:
- OHARA FPL-53 Glass lens, Carbon(CF) Tube, 3.0´´ Feather-Touch Focusser with 1:10, 2.0´´ Star Diagonal 99% Reflectivity (see Part No. 0112165(CF))


Features:

- Three lens apochromat with two air spaces
- Aperture 80mm; focal length 480mm; f/6
- HOYA FCD-100 glass for maximal color fidelity
- High end 2,5´´ Hexafoc 10:1 DeLuxe Focuser
- 2´´ 99% Diagonal included
- Extension tubes for focusser (2pcs)
- Dewshield slides onto tube for easy transport
- Tube with rotatable 44mm universal dovetail (Fits Super/Great Polaris, EQ5, LXD75, EXOS-II)


Specifications:

- Aperture: 80mm
- Focal Length: 480mm
- Focal ratio: f/6
- Weigth: 2,6kg
- Backfocus: 150mm above 2´´ adaptor
- Design: Apochromat with three lenses, two air spaces and FCD-100 glass


Technical Data:

Field of application:
- Deep Sky Observation
- Deep Sky Photography
- Lunar observation
- Lunar photography

Focus Group:
- Advanced Amateurs
- Specialists and Research
- Visual enthusiasts

Optical specifications:
- Optical design: Apochomatic Refractor
- Magnification from: 15
- Maximum recommended magnification: 160
- ED glass: Yes
- Material front lens or corrector plate: HOYA FCD-100
- Mirror/Lens diam: 80 mm
- Focal length: 480 mm
- Aperture ratio: 6
- Angular resolution: 1.73 arc seconds
- Type of coating: Enhanced Multilayer Desposition (EMD)

General technical data:
- Material OTA: Aluminium
- Focusing system: 2.5´´ Hexafoc DeLuxe with 10:1
- Mount Type: Optics without Mount

Dimensions & weights:
- Net weight OTA (incl. accessories): 2.6 kg
- Total length: 32 cm
- Total width: 13 cm
- Total height: 14.2 cm
- Tube diameter: 90 mm
- Tube length: 320 mm

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