Description
Remarkable Optics
The impressive optics within this William Optics Gran Turismo 81mm Refractor will blow your mind! With its triplet design and FPL-53 glass, images become crystal clear due to its exceptional color correction. Also, each lens is multi-coated with super-high transmission coating (STM), greatly improving contrast and enhancing detail! The spectacular sharpness seen through this William Optics Gran Turismo 81mm Refractor is sure to take your astrophotography to the next level!
The Perfect Focus
The focuser on the William Optics Gran Turismo 81mm refractor is a 2.5" Rack & Pinion focuser, allowing you to achieve the perfect focus on your favorite celestial objects. By having a large focus adjustment knob and a smaller more precise adjustment knob, finding focus on the stars is quick and effortless! The included Bahtinov mask cover and this Rack & Pinion focuser is a match made in heaven. Sharp stars made easy!
|
SKU Number
|
WYO-A-F81GTIVRD-AP |
|---|---|
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Model Number
|
A-F81GTIVRD-AP |
|
Telescope Series
|
William Optics GT |
|
Focal Ratio
|
f/5.9 |
|
Optical Design
|
Refractor |
|
Telescope Aperture
|
81mm (3.19") |
|
Telescope Mount Type
|
No Mount - OTA Only |
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Type of Electronics
|
OTA Only - No Electronics |
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Number of Refractor Elements
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3 (Triplet) |
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Focal Length (mm)
|
478mm |
|
Image Circle
|
> Full Frame |
|
Focuser Style
|
Rack & Pinion |
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Focuser Size
|
2.5" |
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Telescope OTA Weight (lb.)
|
8.59 lb. |
|
Refractor OTA Length - Extended (in.)
|
18.11" (460 mm) |
|
Refractor OTA Length - Retracted (in.)
|
15.35" (390 mm) |
|
Warranty
|
William Optics - 2 Years |