William Optics Fluorostar 120 APO Triplet OTA (A-F120-RP33)

The William Optics FluoroStar 120 Refractor is an air-spaced triplet APO. Using three elements made of high-end fully coated glass like FPL-53 virtually removes chromatic aberration and produces images that are sharp and full of contrast. A patented light weight Bahtinov mask is included to provide assistance in focusing, or you can remove it when using the F120 visually.

The FLT120 has a native focal ratio of f/6.5 and a focal length of 780 mm. The big 3.3" rack and pinion dual-speed focuser allows for use of two optional M92 flatteners from William Optics; the FLAT68III, which flattens the field beautifully without focal reduction, or the FLAT7A, an APO flattener and 0.8X reducer. While the FLAT68III is recommended for the best image quality of the two, the FLAT7A reduces the focal ratio from f/6.5 to f/5.2. Both flatteners accept 2" threaded filters.

As with other William Optics refractors, the fit and finish on the FluoroStar 120 is superb. The telescope comes with cradle style mounting, a saddle handle bar, and a universal Losmandy-style dovetail plate. All four pieces are anodized in red. The included camera rotator and the Rotolock 2" Adapter are anodized to match. This is one beautiful telescope. By the way, the top of the handle bar has a Vixen-style saddle built in to accept William Optics slide base guide rings for a guide scope or finder. You can also use an accessory mounted on a Vixen dovetail.

This Fluorostar 120 APO OTA from William Optics comes standard with a dust cover that has a built-in, clear Bahtinov Mask for perfect focusing every time. Simply remove the flat front cover plate, leaving the dust cover cuff in place on the OTA. Point the OTA at a bright star, and focus carefully. When the bright central diffraction spike looks exactly centered between the other two spikes forming an "X", then your OTA is in exact focus for stars. Remove the dust cover cuff carefully from the objective end of the OTA, and you are ready to image.

Details and Features

• Bahtinov Mask - Uncover William Optics' patented Bahtinov Mask by detaching the face plate from the retractable dew shield lens cover. Experience brighter star patterns and accurate focusing for astrophotography via the Mask's clear design.
• William Optics Rack & Pinion 3.3" Focuser - Our 2.2" R&P focuser is smooth, stable, and reliable. No image shifting!
• Mounting Ring and Losmandy Plate - Made by CNC with anodizing. Strong and Nice Looking! Losmandy type mounting plate is included in the standard package.
• Soft Carry Case - A soft carry case comes standard with the William Optics Fluorostar 120.

What's In the Box

• Fluorostar 120 mm f/6.5 FPL53 APO Triplet Refractor Telescope OTA
• 3.3" Rack & Pinion Focuser
  
• Bahtinov Mask Cover
• Vixen-Style Dovetail Saddle Plate
• Mounting Rings with Handle Bar
• Soft Carry Case

Recommended Optional Accessories

• T-Mount for
• M4/3
• Nikon
• Canon
• Sony a
• Pentax
• Fuji
• Guiding Scope
• Flattener
• Eye Piece & Prism
• Finder Scope & Ring
• Red Dot Finder

Specifications

Note: William Optics uses high quality steel lens cells and FPL53 glass for WO triplet series (GT and FLT) - this combination is perfect for temperature compensation and will prevent pinched optics in cold weather conditions.
Before you store the telescope you have to uncover it and let the tube to stay open for some time. After the telescope dry up, moisture will evaporate and it can be safely stored. You must to store your telescope in a dry place with a constant room tem perature.
Otherwise lens cell will rust and lens coating will be damaged by fungus.