William Optics Fluorostar 156 f7.8 with Rack & Pinion Focuser A-F156-RP37 (Specify Color)

Article number: A-F156XX-RP37
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William Optics FLT 156 Refractor w/ 3.7" Rack & Pinion - Blue

William Optics' 156 Fluorostar APO refractor is designed to provide unparalleled views. FLT156s are designed for visual and photographic use. The 3-element, apochromatic optics boast superior color correction. The large 156mm aperture and 1217mm focal length deliver a great field of view perfect for astroimaging. William Optics ensures top quality telescopes and this refractor is no different. It comes with FPL-53 and Lanthanum glass for aberration correction.

The beautiful exterior of the FLT156 f/7.8 APO Triplet Refractor makes its supreme quality obvious to those who see it up close. WO has included their patented Bahtinov mask and the CNC machined and anodized handle-bar perfect for the William Optic UniGuide scope and other accessories with a Vixen type finder base. It also comes with a Losmandy dovetail plate and rings for a sturdy fit when connected to a mount. A soft carry case is also included to protect your scope when traveling and ensure safe storage.


About the WO Bahtinov Mask Cover


The Bahtinov mask is a great tool for astrophotography and modifying focus. With William Optics quality, the Innovative Bahtinov Mask Cover for the William Optics telescopes will help astrophotographers reach the best focus when capturing those wonderful celestial photos.


About the Saddle Handle Bar


The Saddle Bar Handle is a great way to make your William Optics telescope portable! William Optics' patented handle design allows users to slide their compatible slide-base guide rings (not included) directly onto the handle. This handle will also accept the William Optics UniGuide 50mm Slide-Base Guide Scope (not inlcuded).

The William Optics FLT156 includes a robust 3.7" rack and pinion focuser and Roto-Lock adapter. The smooth-moving knobs reduce image shifting, keeping you behind the scope for longer.


About the 3.7" Rack & Pinion Focuser


The William Optics 3.7" R&P focuser is a smooth, stable, and reliable focuser that helps prevent image shifting! It works great with a 3" WO corrector (not included).


About the RotoLock Adapter


No compression ring necessary! Just insert your 2" accessory and rotate clockwise to lock it in, and counterclockwise to release it. The process only takes a few seconds. The user is notified when the RotoLock Visual Back is opened or closed via internal ball bearings which present a gentle yet audible click. This allows for easy operation in low visibility. The adapter is ribbed exterior ensures a firm grip.


William Optics FLT156 Triplet APO Refractor Specifications


  • Telescope Series: William Optics FLT
  • Telescope Optical Design: Refractor
  • Refractor Design: Apochromat (APO)
  • Number of Refractor Elements: 3
  • Telescope Aperture: 6.14" (156 mm)
  • Telescope Focal Ratio: f/7.8
  • Telescope Focal Length: 1217 mm
  • Optical Coatings: Fully multi-coated
  • Image Circle: > Full Frame
  • Includes Telescope Case: Yes
  • Focuser Style: Rack & Pinion
  • Focuser Size: 3.7"
  • Telescope Mount Type: No Mount - OTA Only
  • OTA Length - Extended: 52.36" (1330 mm)
  • OTA Length - Retracted: 44.09" (1120 mm)
  • OTA Weight: 37.4 lb.

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