Baader 1.25" Classic Orthoscopic Eyepiece - 18mm # BCO-18 2954118

Our Price: $79.00

Sale Price: $65.00

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In Stock (10+ Available)
Ships by Next Business Day
Our Product ID: E-BP-BCO18
Manufacturer SKU: 2954118
Item Can Ship: Worldwide
Baader 1.25" Classic Orthoscopic Eyepiece - 18mm # BCO-18 2954118

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Quick Overview

  • 18 mm orthoscopic eyepiece based on classic Zeiss design offers high-contrast and razor-sharp images of Moon and planets
  • Innovative ergonomic design for comfortable viewing position and elimination of stray side light
  • Wider 52 degree apparent field of view to make it easy to locate target
  • Ideal for use in binoviewers

Product Details

Even before the disappearance of the famed Baader Genuine Orthoscopics in mid-2012, Baader Planetarium sought to develop a set of true Planetary eyepieces that was accessible for any amateur - without breaking their bank. Foregoing fancy (and costly) cosmetics, the new Classic Eyepieces deliver where it counts - performance. Their sharpness and contrast rival other 'planetary' eyepieces costing much more. To achieve this performance and value, Baader drew upon their extensive in-house knowledge and experience, combined with optical designs and processes leveraged from Zeiss.

Features of the new Classic Eyepieces:

  • Optical design and manufacturing specs based on the highly regarded Zeiss Jena 0.965" orthoscopics (not any Japanese or Chinese makes).
  • Fully multi-coated: All air-to-glass surfaces are coated with Baader's HT MultiCoatings, specifically matched to each substrate.
  • Excellent ergonomics: The innovative recessed volcano top provides clearance for eyelashes and enables a comfortably located eyepoint without the stray light problems of a full volcano top.
  • Integrated winged folding rubber eyecup: Eliminates distracting stray side-light, enabling full concentration on the object, as well as providing a thermally insulating and soft non-scratching top surface (ie, for eyeglass wearers). Also outstanding for BinoViewing. Rubber eyecup may be folded down or removed, if needed .
  • 52-deg apparent field of view (6/10/18mm Orthoscopics): Makes finding and centering objects at high powers easier than typical 40-45deg eyepieces. 
  • Blackened lens edges; Parfocal.
  • Threaded to accept standard 1.25" astronomy filters.

Additional Information

Orthoscopic Eyepiece Spec Sheet

Useful Resources

Preliminary reports of these eyepieces:

- Astronomy and Living by Hernando

- BCO Review on Cloudy Nights

Eyepiece Series Baader Classic Orthoscopic
Focal Length 18mm
Barrel Size 1.25" (31.7mm)
Apparent Field of View (Mfg Specified) 52°
Eye Relief (Designed) 14.7mm
Filter Threads Standard 1.25" Filter Thread (M28.5 x 0.6)
Coatings HT Multi-Coated
Lens Elements 4
Lens Groups 2
Blackened Lens Edges Yes
Barrel Type Smooth sided
Protective Plastic Storage Container Yes - Free Agena Eyepiece Container
Protective Plastic Storage Container Size Agena 42x60mm
Optical Design Orthoscopic
Height (With Eyeguard Extended) 2.22" (56.3mm)
Maximum Width 1.37" (34.8mm)
End Caps 2
Eye Lens Diameter 0.62" (15.8mm)
Field Stop Diameter 16.8mm
Parfocal Yes
Rubber Eye Guard Yes (Winged)
Weight 2.86 oz (81 g)

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