{"id":32688,"date":"2025-11-06T17:02:20","date_gmt":"2025-11-06T16:02:20","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=32688"},"modified":"2026-08-25T15:11:00","modified_gmt":"2026-08-25T13:11:00","slug":"ioptron-cem120ec-mount-goto-high-precision-encoder","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/ioptron-cem120ec-montering-goto-high-precision-encoder\/","title":{"rendered":"iOptron CEM120EC Mount GoTo High Precision Encoder"},"content":{"rendered":"

iOptron CEM120EC GoTo High Precision Encoder Mount: observatory precision with RA encoder<\/strong><\/h2>\n\n\n\n

The iOptron CEM120 is a center-balanced equatorial GoTo mount for the heaviest amateur setups: 52 kg (115 lbs) payload capacity, excluding counterweights, with a head weight of 26 kg (57 lbs). Designed for observatories and permanent setups with large optics and complete imaging systems.<\/p>\n\n\n\n

The EC version measures the right ascension axis with a high-resolution encoder and corrects the periodic error in real time. For many photo setups, this eliminates the need for autoguiding on the RA axis.<\/p>\n\n\n\n

All observatory functions of the CEM120 remain on board: GPS, WiFi, LAN, and the extensive cable management.<\/p>\n\n\n\n

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\"iOptron<\/figure>\n<\/figure>\n\n\n\n

Real-time error correction on the RA axis<\/strong><\/h4>\n\n\n\n

The encoder makes continuous corrections without PEC training. Stars remain sharp in long exposures, even unattended.<\/p>\n\n\n\n

For the declination axis and long focal lengths, ST-4 autoguiding remains available.<\/p>\n\n\n\n

Heavy mechanics, fine tracking behavior<\/strong><\/h4>\n\n\n\n

Machining 80 mm thick shafts on 125 mm bearings; the 216 mm worm wheels with 360 teeth and a worm period of 240 seconds provide tracking performance with a periodic error of under plus or minus 3.5 arcseconds.<\/p>\n\n\n\n

The spring-loaded Losmandy saddle and the adjustable counterweight shaft (usable down to the equator) make the mount suitable for virtually any large OTA. The head is supplied without a tripod; the Tri-Pier with adapter or a permanent pier is the suitable base.<\/p>\n\n\n\n

Observatory class control<\/strong><\/h4>\n\n\n\n

The Go2Nova 8407 V2 hand controller with display heating contains over 200,000 objects. GPS, WiFi, and a LAN connection are built-in, so the mount fits directly into any observatory network.<\/p>\n\n\n\n

Autoguiding is possible via the ST-4 port; the extensive multi-port cable management also keeps dual photography setups tidy.<\/p>\n\n\n\n

Included<\/strong><\/h3>\n\n\n\n