Sky Watcher 20th Anniversary Quattro 250 Trius SX42 Kit

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Sky Watcher 20th Anniversary Quattro 250 Trius SX42 Kit

For twenty years Sky-Watcher has been bringing the astronomy market quality products at value prices. To celebrate, Sky-Watchter teamed up with Starlight Xpress to offer limited-edition astrograph packages. By matching their award-winning astrographs with the Trius SX-42 camera, Sky-Watcher and Starlight Xpress eliminated all of the headaches associated with configuring an imaging train. Back focus, adapters, guiders, filter wheel, etc. are all taken care of. Simply attach these kits to your favorite mount, plug into a computer, add your filters and you’re ready to go.

Quatrro 250 OTA Features

Fast f/4 focal Ratio

This is especially important for astrophotographers dealing with long exposure times. Imaging telescopes made of less thermally stable material can deviate from optimum focus after long time exposures. It can remain in focus for a longer period of time and long exposure images will stay clear and in focus. Tube interiors are equipped with knife-edge ray traced baffles.

2-Inch Dual-Speed Focuser

The linear power focuser utilities 4 precision ball bearings to support the drawtube and provide great stability and zero image shift while supporting a heavy eyepiece or camera. Moving the drawtube by the roller rather than a rack and pinion ensures exceptionally smooth operation and precise adjustability. The dual-speed feature has a second focus knob that has a 10:1-speed reduction to provide the super-fine adjustments even the most demanding users can appreciate.

High-Quality Mirror

It features paraboloidal primary mirrors made of Low-Expansion Borosilicate Glass resulting in substantially shorter cooling-down times.

It comes with an impressive 0.5 mm Ultra-Thin Secondary Mirror Support and it is 77% more Light-Gathering than 150mm.

Trius SX-42 Features

Sony ICX694 CCD Sensor

Camera Freatures

Limited Time Offer

These 20th Anniversary Kits are limited edition and are only available while supplies last. Most importantly, you can save up to $500 over what you’d pay to buy these items individually.So don’t wait to get yours!


ADC16 bit
Aperture254 mm (10")
Delta T40°C Below Ambient
Dynamic Range12.2 Stops
Focal Length1000 mm
Focal Ratiof/4
Free ShippingYes
Full Rez Frame Rate16.5fps
Full Well18ke
Max Frame Rate290fps
Optical DesignNewtonian
Peak QE77%
Pixel Array3704 x 2778
Pixel Size4.63 microns
Power Consumption12V 0.9A
Read Noise4e
SensorSony ICX694ALG
Weight0.9 lbs