User Manual for Sky-Watcher ProED 120mm f 7.5 Doublet APO Refractor Click to enlarge the picture
Contents of the user manual for the Sky-Watcher ProED 120mm f 7.5 Doublet
- Product category: Refractors Sky-Watcher
- Brand: Sky-Watcher
- 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 Sky-Watcher Refractors
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User manual for the Sky-Watcher ProED 120mm f 7.5 Doublet 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 Sky-Watcher 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 Sky-Watcher 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 Sky-Watcher product will considerably shorten its lifespan!
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Product description The ProED 120mm f/7.5 Doublet APO Refractor from Sky-Watcher features a doublet apochromatic lens system with Extra-low Dispersion (ED) glass and Sky-Watcher's proprietary photon anti-rejection Metallic High-Transmission Coatings (MHC) on all air-to-glass optical surfaces. This combination of glass, lenses, and coatings virtually eliminates chromatic aberrations for clear and bright high-contrast images with true color rendition. This is a versatile optical tube assembly (OTA) that is well suited for wide-field astronomical observation of prominent nebulae, star clusters and galaxies, or can be used as an astrograph for sky photography, a terrestrial spotting scope or telephoto lens. The larger 120mm aperture of this ProED model not only increases image brightness over the smaller 80mm and 100mm versions, it improves resolution and contrast.A mounting cradle-ring clamps over OTA and allows the user to adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and balance, while avoiding interference with other equipment. The scope is offered without a mount or tripod, but a Vixen-style dovetail plate makes it compatible with any alt-az or equatorial mount with a Vixen-style saddle.Its two-speed Crayford-style focuser helps make fine-focusing fast and precise without backlash. The ProED comes with several accessories to help you get observing faster and easier. First, are two long eye relief eyepieces that produce 30 and 120x magnification, a 90° star diagonal for more comfortable viewing, and a large 8x50 erect-image finderscope to make finding your celestial objects faster and easier. Finally, Sky-Watcher provides a foam-lined aluminum carrying case to safely store and transport the OTA. - Optical Performance
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- 120mm objective lens
- 900mm focal length
- Focal ratio: f/7.5
- Refractor-style optical design
- Extra-low Dispersion (ED) glass
- Apochromatic doublet lenses eliminate chromatic aberrations for true color rendition and enhanced contrast
- Proprietary anti-reflection Metallic High-Transmission Coatings (MHC) multi-coatings on all optics
- Objective lens cell is light-baffled to reject stray, unfocused light
- Baffled draw tube for enhanced contrast
- OTA interior is flat blackened to help prevent unfocused internal light reflections from reaching the focal plane
- Resolution, Rayleigh: 1.16 arcsec
- Resolution, Dawes: 0.97 arcsec
- Focuser
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- 2" diameter focuser
- Dual-speed Crayford-style
- Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
- Includes 1.25" adapter for using smaller eyepieces and accessories
- Included Accessories
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- Two 1.25" barrel diameter eyepieces:
- 5mm eyepiece: Yields 180x magnification
- 20mm eyepiece: Yields 45x magnification
- Diagonal:
- 90° angle
- Dielectric coatings for greater than 99% reflectivity
- Star diagonal corrects images vertically, but not horizontally
- 8x50 erect-image finderscope with bracket
- Foam-lined hard aluminum carrying case
- Mount
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- User-supplied mount and tripod required
- Vixen-style dovetail plate included
- Compatible with any alt-az or equatorial mount with a Vixen-style saddle
- Cradle-ring assembly for plate allows the scope orientation to be changed based on mount configuration
- Integrated 1/4"-20 piggy-back camera mount for wide-field astrophotography
- Quick-release system for fast setup and breakdown
UPC: 812556011245 In the Box Sky-Watcher ProED 120mm f/7.5 Doublet APO Refractor (OTA only) 5mm Eyepiece 20mm Eyepiece 2" 90&Deg; Diagonal 1.25" Eyepiece Adapter 8x50 Finderscope with Bracket Mounting Plate and Cradle Ring Assembly Foam-Lined Aluminum Carrying Case Limited 2-Year Warranty Table of Contents
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Technical parametersSky-Watcher Pro 120ED APO Specs | | | Optical Design | Apochromatic Refractor | | Aperture | 120 mm / 4.7" | | Focal Length | 900 mm | | Focal Ratio | f/7.5 | | Eyepiece Barrel Diameter | 2" | | Diagonal | Yes, 90
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