William Optics Pleiades 181 f/5.5 OTA. 7-element APO with 3 ED glasses APO,4.1 R&P focuser in Blue (SKU: T-P-181BU) William Optics telescopes opinie

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William Optics Pleiades 181 mm is a flagship astrograph designed for professional astrophotography applications. This telescope is dedicated to the most advanced astrophotography enthusiasts due to its parameters and powerful capabilities.

The heart of this telescope is the seven-element optics, in the design of which the use of as many as three low-dispersion lenses made of super ED glass has been taken into account. Thanks to this procedure, this instrument has excellent correction of chromatic aberrations, which, combined with high light intensity and large aperture, guarantees obtaining images with excellent detail. Thanks to the careful selection of materials and precise workmanship, the optical system of the William Optics Pleiades 181 mm telescope is characterized by a Strehl coefficient value of >0.96, which places this instrument in the absolute world's top of professional astrographs. The telescope tube is equipped with a solid rack & pinion type extension with a diameter of 3.7" adapted to mount the largest astrophotographic cameras.

The telescope tube is mounted on precisely made clamps, equipped with a socket for mounting a finder or guide scope.

William Optics Pleiades 181mm Telescope Highlights

• seven-lens apochromatic refractor with three lenses made of super ED glass
• fully temperature compensated optics
• 3.7" diameter rack & pinion extension adapted to mount large astrophotography cameras
• diameter of the full illumination disc is 55 mm
• mounting clamps made using CNC technology

Technical parameters

• telescope optical system: apochromatic refractor
• lens system: 7 lenses
• number of low dispersion lenses: 3 super ED lenses
• Lens diameter: 181 mm
• focal length: 998 mm
• aperture: f/5.5
• diameter of the full illumination disc: 55 mm
• compatible camera types: full frame, SLR, mirrorless, CMOS, CCD, medium format
• compatible camera systems (via interchangeable T-rings): Canon EF, Canon RF, Nikon F, Nikon Z, Sony E, Pentax K, Micro 4/3, Fuji X
• type of eyepiece: 3.7"; rack & pinion
• rotator: yes, 360°
• camera connection: M68, M54 and M48 adapters
• tube length with unfolded dew shield: 1496 mm
• Deflector diameter: 230 mm
• tube weight: 15 kg
• tube weight with accessories: 18.7 kg
• tube finish: white with blue clamps

Set components

• William Optics Pleiades 181 mm telescope
• rotator
• threaded adapters for camera mounting
• mounting clamps
• documentation

Guarantee

24 months