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User Manual for Tele Vue NP127fli f 5.3 Astrograph APO Refractor Telescope Click to enlarge the picture
Contents of the user manual for the Tele Vue NP127fli f 5.3 Astrograph
- Product category: Refractors 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 Refractors
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User manual for the Tele Vue NP127fli f 5.3 Astrograph 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 The product of a corroboration between Tele Vue Optics and Finger Lakes Instrumentation (FLI), the NP127fli f/5.3 Astrograph APO Refractor Telescope is a purpose-built wide-field astro-imaging optical tube assembly (OTA) made to specifically work with FLI's ultra-precise Atlas Focuser, CenterLine filter wheel, and ProLine imaging cameras. Since the designer's intent was to create an astro-imaging instrument its performance has been engineered with an emphasis on superior performance featuring a 127mm aperture, 680mm focal length, and a fast f/5.3 focal ratio.The telescope's Nagler-Petzval refractor optical configuration was designed by Tele Vue's founder Al Nagler with its objective consisting of five lens elements set in three groups configured with a two-element full aperture objective in the front and a two-element sub-aperture doublet set back in the optical tube. The NP17fli has a built-in Tele Vue Large Field Corrector lens that corrects for chromatic and spherical aberrations to produce clear and crisp images with true color rendition across the entire field of view. An image plane correction system enables all objects through the entire depth of field, no matter their distances from each other, to be brought into perfect focus.Tele Vue and FLI have designed an imaging system that not only produces superior images, but is uniquely capable of handling large imaging rigs. These large rigs can have multiple peripherals such as filter wheels, off-axis guiders, and CCD cameras; and the often uneven weight distribution can lead to damaging torque on delicate focusers and OTAs. The NP127fli was conceived, designed, and built to eliminate these problems and provide an imaging platform that can handle complicated rigs without a problem. - The OTA has been specifically designed to perfectly position the FLI Atlas focuser near the center of its travel, and the Large Field Corrector lens sits within the Atlas and is properly located to accommodate the combined path length of FLI's CenterLine filter wheel and ProLine cameras
- Nagler-Petzval refractor telescope co-designed by Tele Vue's founder Al Nagler
- 680mm focal length, f/5.3 focal ratio
- Apochromatic 3-group/5-element lens design corrects for spherical and chromatic aberrations
- Built-in Tele Vue field flattener corrects for spherical aberrations to produce images without distortion across the entire field of view
- Image plane tilt correction system enables crisp focusing of all objects through the entire depth of field
- Anti-reflection fully multi-coated optics
- 4.3° angle of view will cover imaging chips up to 52mm diagonal
- To be used with compatible user-supplied mount and tripod
- Vixen-style dovetail saddle
- Hard protective carrying case
In the Box Tele Vue NP127fli f/5.3 Astrograph APO Refractor Telescope (OTA Only) Screw-On Metal Lens Cover Mounting Rings Hard Carrying Case Limited 5-Year Warranty Table of Contents
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Technical parametersTele Vue NPF-5055 Specs | | | Optical Design | Apochromatic Refractor | | Aperture | 127 mm / 5" | | Focal Length | 680 mm | | Focal Ratio | f/5.3 | | Finderscope | No | | Mounting System | Vixen Style | | | | Package Weight | 32.0 lb | | Box Dimensions (LxWxH) | 41.0 x 12.0 x 10.0" |
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