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User Manual for Tele Vue Ethos-SX 3.7mm Ultra Wide-Angle Eyepiece Click to enlarge the picture
Contents of the user manual for the Tele Vue Ethos-SX 3.7mm Ultra Wide-Angle
- Product category: Eyepieces Tele Vue
- Brand: Tele Vue
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Tele Vue Eyepieces
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User manual for the Tele Vue Ethos-SX 3.7mm Ultra Wide-Angle contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Tele Vue product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Tele Vue user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Tele Vue product will considerably shorten its lifespan!
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Product description Engineered to recapture the identical field of view astronauts enjoyed through the windows of their LEMs during the moon landings, Tele Vue's Ethos-SX 3.7mm Ultra Wide-Angle Eyepiece delivers an expansive 110° angle of view and offers a long eye relief, despite the short focal length, with high contrast and excellent on-axis sharpness; and virtually zero astigmatism or field curvature. Combining a hyper-wide apparent angle of view with its short focal length, this Ethos delivers high magnification with enhanced details when looking at the moon and planets, while still offering an immersive observational experience.A unique design characteristic of the Ethos allows it to be used in the smaller, more common-sized 1.25" drawtubes and accessories; and a simple screw-on installation of the included adapter converts it for use in larger 2" versions. This provides users with an easy and convenient way to expand its functionality and versatility, without limiting its use or relying on eyepiece holder reducer adapters. This model is parfocal with a variety of Tele Vue eyepieces, requiring little or no refocusing when changing between them — greatly decreasing vibration and increasing convenience. A textured collar around the housing provides sure handling in cold weather or while wearing gloves, and a fold-down rubber eyecup allows for comfortable use with or without eyeglasses. - 1.25" Parfocal Eyepieces
- Parfocality is only achieved when in the 1.25" mode
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Technical parametersTele Vue ETH-03.7 Specs | Focal Length | 3.7mm | | Barrel Diameter | 1.25" and 2.0" | | Eye Relief | 15.0 mm | | Field Stop Diameter | 7.04 mm | | Apparent Field of View | 110° | | Dimensions | 6.1 x 2.2 / 15.5 x 5.6 cm | | Weight | 17.6 oz / 499.0 g | | | | Package Weight | 2.0 lb | | Box Dimensions (LxWxH) | 8.3 x 4.4 x 4.4" |
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