William Optics - Fluorostar FLT 132mm f/6.9 Optical Tube Assembly with 3.5" Feathertouch Focuser (Gold) - Version IV

SKU
WIL-A-F132GDIV-FT
$5,668.00
Availability : Pre-Order
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The William Optics Fluorostar FLT 132 is manufactured with FPL-53 glass for its suitability for wide field long exposure astrophotography. FPL-53 is considered ED glass which effectively removes chromatic aberration by ensuring uniform refraction of all colors, resulting in exceptionally sharp and accurately colored frames.

William Optics - Fluorostar FLT 132mm f/6.9 Optical Tube Assembly with 3.5" Feathertouch Focuser (Gold) - Version IV

FLT 132 APO OTA with 3.5" Feathertouch IV Features

  • The William Optics Fluorostar FLT 132 consists FPL-53 glass, known for its pristine optical properties suitable for applications like wide field long exposure astrophotography.
  • FPL-53, classified as extra-low dispersion (ED) glass, effectively eliminates chromatic aberration by ensuring equal refraction of all colors, resulting in exceptionally sharp and color-accurate images which are essential for successful wide field long exposure photography.
  • The handle bar and tube rings of the William Optics Fluorostar FLT 132 are precision CNC machined, providing extreme rigidity and sturdiness for superb performance.
  • The handle allows the mounting of accessories such as a uniguide and other Vixen style finders. Tube rings offer robust support for the optical tube, allowing secure attachment with the included Losmandy D style dovetail at the bottom.
  • This specific FLT 132 configuration features a 3.5" Feathertouch focuser, known for its smooth and stable operation. This focuser is particularly well-suited for imaging setups, ensuring there is no image shifting during operation.
  • Included with the FLT 132 is a patented Bahtinov mask, serving as a crucial tool for accurate focusing prior to imaging. This feature ensures that frames capture pinpoint stars, contributing to the overall precision of the astrophotography process.

Pristine FPL-53 ED Glass for Remarkable Contrast and Sharpness

The William Optics Fluorostar FLT 132 consists of FPL-53 glass which has several advantageous optical properties that make it desirable for certain applications, especially in the field of wide field long exposure astrophotography. FPL-53 is a type of extra-low dispersion (ED) glass which eliminates chromatic aberration by ensuring all colors are refracting equally to render extremely sharp and color accurate results, absolutely a crucial factor to have for wide field long exposure.

CNC Machined Handlebar and Tube Rings

The William Optics Fluorostar FLT 132 handle bar and tube rings are CNC machined for extreme rigidity and sturdiness. A uniguide and other Vixen style finders can be mounted on the handle and the tube rings provide more than adequate support for the optical tube to be mounted with the included Losmandy D style dovetail at the bottom.

3.5" Feathertouch Focuser

This configuration of the FLT132 comes with a 3.5" Feathertouch focuser which is smooth and stable, perfect for imaging setups with no image shifting.

Patented Bahtinov Mask

A patented Bahtinov mask is included by to ensure accurate focusing can be obtained easily prior to imaging so frames generate pinpoint stars.

Results with Optional (Sold Separately) Reducers and Flatteners

Several reducer and/or flatteners are developed by William Optics that further improve the imaging results of the FLT132. These are not included and must be purchased separately.

The 3" Flattener Flat68III results in the best performance when paired with the Fluorostar 132.

The x0.8 reducer flattener provides the following results.

The x0.72 reducer/flattener changes the focal ratio from f/6.9 to f/5, further improving wide field imaging.

More Information
Brand William Optics
Free Shipping Free Shipping Available
Aperture 132mm
Case Included Yes
Focal Length 910mm
Focal Ratio f/6.9
Focus Type Feathertouch
Image Circle 36mm
Limiting Stellar Magnitude 14.5
Optical Tube Length 104cm extended; 78cm retracted
Optical Tube Diameter 141mm
In The Box
  • William Optics Fluorostar FLT 132mm f/6.9 Optical Tube Assembly with 3.5" Feathertouch Focuser (Gold) - Version IV
  • Handle bar
  • Losmandy Style dovetail
  • Integrated bahtinov mask
  • Mounting tube rings
  • William Optics Fluorostar FLT 132mm f/6.9 Optical Tube Assembly with 3.5" Feathertouch Focuser (Gold) - Version IV
  • Handle bar
  • Losmandy Style dovetail
  • Integrated bahtinov mask
  • Mounting tube rings
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