Sky-Watcher Esprit 80ED Pro apochromatic refractor telescope with HEQ5

Sky-Watcher Esprit 80ED Pro apochromatic refractor telescope with HEQ5.

Large refractor telescopes are a dream for many people who want to obtain impressive planetary observations as well as inspiring deep sky images. The absence of central obstruction, the resulting image sharpness and the significant field of view, attract more and more of the amateur astronomy community to this optical configuration, valid for both observing and astrophotography.

To satisfy the most demanding users this new product line includes a high quality ED triplet. With an Ohara FPL-53 center element and two Schott lenses, Sky-Watcher has turned to the high quality of the Esprit to deliver high optical performance in planetary and deep sky imaging.

Designed for the advanced amateur astronomer, with its unique three-lens air-spaced design, chromatism is completely under control, image delivery is spectacular thanks to exceptional contrast.

The field corrector with two 48 mm lenses offers a perfectly flat field with a diameter of 44 mm. Its oversized lenses offer a wider and clearer aperture and have no internal reflection.

With this equipment you can enjoy the giants Jupiter and Saturn like never before, rediscover the Moon, and with its large diameter, you can photograph the most beautiful nebulae with the stars well spotted even at the edges of the field. With the 80 diameter you won't miss anything in the deep sky.

The absence of chromatic aberration, the focal ratio of 5 and the field flattener will allow you to obtain amazing results with an APS-C format sensor.

The telescope mounts a Crayford dual-speed 01:10 linear power focuser. To exploit this focuser to the fullest Sky-Watcher has designed a new 3'' eyepiece of patented design. The focuser is of CNC construction and its 01:11 development is smooth and precise, indispensable for obtaining a sharp image at high magnifications in visual or astronomical photography. The eyepiece holder is rotatable, which will greatly facilitate framing to give your shots a unique touch.

The optical tube is machined from aluminum, with retractable spray shield to make it more compact, and the interior is specially designed to reduce stray light. As a high quality detail, the lenses have a very high light transmission rate thanks to several metal deposits.

what is included in the tube box?

• • • • • Field flattener
        • Crayford Linear Power 2.7" (can be rotated)
        • Integrated dovetail
        • Retractable sunshade
        • Aluminum case with foam

Technical Specifications tube:

• • • • • Diameter: 80 mm
        • Optical tube: aluminum.
        • Lens design: 3 air-spaced APO type lens elements
        • Focal length: 400 mm
        • Focuser: 01:11 linear power Crayford eyepiece holder with rotation collar built into the tube
        • Tube weight: 4.05 kg
        • Length: 446 mm tube length (spray shield retracted)
        • Magnification limit: 11.6
        • Magnification 160x
        • Visual back focus: 160 mm
        • Back focus behind field corrector: 61 mm
        • Field of view: 33mm
        • Carrying case

HEQ5 mount.

The German SKYWATCHER equatorial mounts with integrated SynScan system are high quality observation platforms with well thought-out mechanics and electronics.

The main features of the German GOTO equatorial mounts are summarized below:

PC operation:

Motors, crowns and bearings:

SKYWATCHER mounts of the SynScan series use DC stepper motors with high Torque capability and microstepping control technology for maximum precision. Bronze crown and bezel system for precision mechanical incremental movement to minimize gear backlash.

Speeds and tracking modes:

The versatility of the SynScan system allows various search and tracking speeds to be selected. The tracking modes are: Lunar, Solar and Sidereal. The mount is compatible with use in both the Northern and Southern hemispheres.

Database:

The SynScan computer includes a database of over 40,000 objects in memory. The library includes objects for advanced studies, following the existing catalog system: NGC, IC, Caldwell, Messier and other lists plus 25 user-definable objects (comets, asteroids, etc).

Astrophotography:

Astrophotography enthusiasts will invaluably appreciate the presence of the AUTO-GUIDER port that allows autoguider functions to be performed via a PC. The SynScan firmware includes the SynScangramming algorithm for periodic error correction (this error is natural and inherent to all corona-bisenfin systems). In addition, this algorithm can be complemented with the Backlash compensation function (technical term to describe gear backlash) for both AR and DEC. In this way it is possible to have uniform GOTO's and tracking.

Technical Specifications mount:

• • • • • Type of mount: German Equatorial HEQ5 PRO SYNSCAN
        • Load capacity: 18Kg (recommended 15Kg)
        • Dovetail mount: Dovetail 1.75"
        • Motion Control: AR and DEC axes
        • Control Command: EQ SYNSCAN
        • Piggyback Support: Yes
        • Accessory tray: Yes
        • Motors: Stepper motors
        • Polar finder included
        • Mount weight: 10.22Kg
        • Mount with tripod weight: 14.92Kg
        • Counterweights: 2 x 5.1Kg Tripod: stainless steel with adjustable height 750-1270mm

Sky-Watcher Esprit 80ED Pro apochromatic refractor telescope with HEQ5.