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Skywatcher

Skywatcher 120mm Esprit ED Triplet APO Refractor

$6,295.00

The Sky-Watcher 120mm Esprit 120ED Triplet APO Refractor is a professional instrument for the most demanding and exacting astro-photographers. The air spaced apochromatic triplet lenses use the remarkable Ohara FPL-53 ED (extra low dispersion) glass, with exceptional colour correction over the entire visible spectrum there is no chromatic aberration even on bright objects! Knife edge baffles reduce internal reflections and increase contrast, helping to bring out faint structure in deep sky objects.

A 2-element field flattener is included to iron out the natural off-axis astigmatism and field curvature of the objective lens, leaving a fully corrected 42mm field of view. The Sky-Watcher exclusive Helinear Track 11:1 dual speed focuser is rock solid with zero image shift and a 3″ barrel to avoid vignetting. Designed with photography in mind, it sits on two tracks above and below the barrel to prevent flexure with a heavy camera attached, and is fully rotatable to perfectly frame a target on the sensor.
What's In the Box?
Telescope Specs
Delivery

* 120/840 Apochromatic Refractor
* Fixed Dew Shield
* Field Flattener with M48 Thread
* T2 Canon Camera Adapter
* 2″ Dielectric Star Diagonal
* 9×50 Right Angled Erect Image Diagonal
* D Style dovetail Bar
* 2″ to 1.25″ Eyepiece Adaptor
* Aluminium Foam-Lined Case

Model
SWESPRIT120
Optical Design
Airspaced Apochromatic Triplet
Aperture
120mm
Focal Length
840mm
Focal Ratio
f/7
Diameter of the corrected field
40mm
Visual Back Focus
225mm
Resolving Power
1.00″
Stellar Limit Magnitude
12.4
Highest Practical Magnification
240X
Light gathering power (compared to the unaided eye)
294
Focuser
3″ Crayford dual speed with 2″ and 1.25″ adaptor
Optical Tube Length
762mm
Optical Tube Weight
10kg

This product is normally shipped by our freighter service.

Normal delivery is to pickup from their local depot or for delivery to a business address in main towns or cities.

Delivery to a residential address will incur a $45.00 surcharge.

Delivery to a small town or rural address may not be available. We will contact you separately to arrange shipping.