(1 review)

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in stock

GSO 70mm secondary mirror with cell - for upgrading and ATM

83,99 EUR
excl. VAT
excl. 4,65 € Shipping costs

GSO secondary mirror with cell - Minor axis: 70mm
... upgrade for GSO optics with smaller mirrors or for ATM

GSO 70mm secondary with cell
The telescopes by GSO are optimized for visual observation and photography with small to medium-sized sensors. If you want to take photos with bigger sensors, you also need a bigger secondary mirror in order to prevent vignetting.

Exchanging the secondary is straightforward:

Loosen the three collimation screws a little bit and then remove the centre screw (please take care that the secondary cannot fall into the tube). Then you can remove the secondary from the OTA and install the new one. We recommend collimating the mirrors with a laser after installation. As the complete process only takes 2-3 minutes, you can easily interchange the mirrors according to your current use.

A good solution for Amateur Telescope Makers:

GSO has a good reputation regarding the optical quality the deliver. These criteria are also valid for their secondaries. Here, you get the complete secondary mirror with cell. The counter thread is M6.

Technical details:

-- Diameter of minor axis: 70mm
-- Modified plastic cell - holds the mirror without tension.
-- Counter thread on the back side: M6

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Customer reviews:

Author: andrea cuozzo, 25.08.2017
Evaluation: TEXT_OF_5_STARS

"Perfect mirror, Easy to mount in five minutes i changed the secondary"


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