{"id":32689,"date":"2025-11-06T17:02:23","date_gmt":"2025-11-06T16:02:23","guid":{"rendered":"https:\/\/www.telescoop.nl\/?post_type=product&p=32689"},"modified":"2026-08-25T15:11:00","modified_gmt":"2026-08-25T13:11:00","slug":"ioptron-cem120ec2-goto-dual-high-precision-encoder-120mm","status":"publish","type":"product","link":"https:\/\/www.telescoop.nl\/en\/ioptron-cem120ec2-goto-dual-high-precision-encoder-120mm\/","title":{"rendered":"iOptron CEM120EC2 with Dual High Precision Encoders"},"content":{"rendered":"

iOptron CEM120EC2 with Dual High Precision Encoders: dual encoders for the demanding observatory<\/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 EC2 features high-resolution encoders on both axes. Using advanced sky modeling, the mount corrects not only the periodic error in real time, but also residual polar alignment errors and atmospheric refraction.<\/p>\n\n\n\n

Fixed home sensors on both axes preserve the alignment model after shutdown, allowing subsequent nights to start immediately.<\/p>\n\n\n\n

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Real-time correction on both axes<\/strong><\/h4>\n\n\n\n

For long unattended photo sessions with large focal lengths, this is the most accurate mount in the iOptron lineup. Autoguiding can be completely omitted in most configurations.<\/p>\n\n\n\n

The alignment model with home sensors makes the EC2 ideally suited for remote and robotic observatories.<\/p>\n<\/div>\n<\/div>\n\n\n\n

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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<\/div>\n<\/div>\n\n\n\n

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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<\/div>\n<\/div>\n\n\n\n

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