Sky-Watcher Evostar ED APO 150mm f/8 Refractor Telescope (OTA Only)

$Sky-Watcher Evostar ED APO 150mm f/8 Refractor Telescope (OTA Only)$

Sky-Watcher Evostar ED APO 150mm f/8 Refractor Telescope (OTA Only)

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Your Price: CAD4,665.05

Retail Price:CAD4,898.30

Your Savings:CAD233.25(5%)

Sky-Watcher Black Diamond, ED80/600, 2" 28 eyepiece, 8x50, 2" dieletric diag, dual-speed crayford focuser, tube rings, dovetail, alum. case

Part Number: S11190

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Description

Product Highlights

For Autoguiding, Imaging, Observation
150mm Apochromatic Doublet Lens
1200mm Focal Length, f/8 Focal Ratio
Extra Low-Dispersion Lens Element
Dual-Speed 2" Crayford Focuser
T-Mount Threads for Astrophotography
Cradle-Ring Assembly, Vixen Dovetail
Hard Aluminum Carrying Case
OTA Only; Mount and Tripod Required

Use the Sky-Watcher Evostar ED APO 150mm f/8 Guidescope to improve the precision of your autoguiding system, for wide-field astrophotography, or as an exceptional platform for observation sessions.

The large 150mm aperture is complemented by an extra low-dispersion (ED) element set in a doublet apochromatic lens design. These two optical features make the Evostar much more precise than standard refractors and guidecopes, producing crisp and clear high-resolution views with limited edge distortion and accurate color representation. To achieve the sharpest focus possible, Sky-Watcher utilizes a Crayford-style focuser. Unlike a conventional rack-and-pinion system, the focuser utilizes a toothless friction mechanism that smoothly moves the drawtube without the backlash that rack-and-pinion focusers suffer from. The focuser has a large 2" drawtube to accommodate full-frame imaging sensors without vignetting.

A mounting cradle-ring assembly clamps over the optical tube assembly (OTA) and lets the user adjust the orientation and position of the scope relative to the mount to optimize viewing comfort and to help with balancing, 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 mount head with a Vixen-style saddle. Protecting the optical tube and accessories during transport and storage, a hard aluminum carrying case is provided.

Uses

Autoguider: The optical performance improves the precision of autoguiding systems by being able to finely focus the field and resolve guide-stars better
Wide-field astrophotography: Using 2" or 1.25" imaging systems directly into the drawtube enables tack-sharp and highly resolved wide-field images of the night sky, galaxies, constellations, and other objects
Visual: Its optical performance, focal length, and mounting rings make it an ideal platform for lunar, planetary, and deep sky observation

Optical Tube Assembly

Large 150mm aperture is especially useful for lunar, planetary, and deep sky observations and imaging
1200mm focal length helps to produce a moderate magnification potential
Moderate f/8 focal ratio is ideal for observations and long-exposure astrophotography
Apochromatic doublet lens design with an extra low-dispersion element eliminates chromatic and spherical aberrations for true color rendition without distortion across the entire field of view
Hard aluminum carrying case to safely store and transport the OTA and accessories

Focuser

Dual-speed Crayford-style
Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
Large 2" drawtube prevents vignetting when using wide-field eyepieces for viewing, or large imaging sensors for astrophotography
Integrated M48 T-mount threads accept camera-specific T-rings to directly connect DSLRs and imaging systems to the drawtube

Mounting

OTA only; mount head and tripod required for proper use
Cradle-ring assembly for dovetail plate allows the scope orientation to be changed based on mount configuration
Vixen-style dovetail plate is compatible with any alt-az or equatorial mount with a Vixen-style saddle
Weight: 20.5 pounds

Specifications

Optical Design	Apochromatic doublet refractor
Aperture	150mm
Focal Length	1200mm
Focal Ratio	f/8
Eyepiece Barrel Diameter	2" 1.25" with included adapter
Diagonal	None
Finderscope	None
Tripod	None
Mount Type	Vixen-style dovetail
Power Source	None
Optical Tube Dimensions	50.5 x 7.1" / 128.3 x 18.0 cm
Weight	20.5 lb / 9.3 kg

In the Box

Sky-Watcher Evostar ED APO 150mm f/8 Refractor Guidescope (OTA Only)

Mounting Ring Assembly

Aluminum Carrying Case

Limited 2-Year Warranty

$Sky-Watcher Evostar ED APO 150mm f/8 Refractor Telescope (OTA Only)$

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Sky-Watcher Evostar ED APO 150mm f/8 Refractor Telescope (OTA Only)

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