{"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":"2026-03-12T18:46:22","modified_gmt":"2026-03-12T17:46:22","slug":"ioptron-cem120ec2-goto-dual-high-precision-encoder-120mm","status":"publish","type":"product","link":"https:\/\/staging.telescoop.nl\/en\/ioptron-cem120ec2-goto-dual-high-precision-encoder-120mm\/","title":{"rendered":"iOptron Newton CEM120EC2 with Dual High Precision Encoders"},"content":{"rendered":"

The iOptron CEM120EC2<\/strong> is designed for those seeking maximum stability, accuracy and control. Whether you are working with a heavy telescope or a complex astrophotography platform, this mount keeps everything perfectly balanced and tracks your target objects with impressive precision.<\/p>\n\n\n\n

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

Powerful and balanced design<\/strong>
The CEM120EC2 uses the unique centrally balanced design<\/strong> from iOptron. The weight of your telescope is directly over the center of the column or tripod, providing natural stability. This keeps your image steady, even at high magnifications or long exposures. You notice the difference immediately - less vibration, more sharpness.<\/p>\n\n\n\n

Dual encoders for error-free tracking<\/strong>
Whereas most mounts use one encoder, the CEM120EC2 has one. two<\/strong> - one on each axis. These dual encoders provide real-time correction<\/strong> of even the smallest deviations. Your tracking remains smooth and accurate, so you always capture stars as perfect dots, without post-processing.<\/p>\n\n\n\n

Intelligent tracking of celestial objects<\/strong>
The mount uses advanced sky modeling<\/strong>. This means it automatically adjusts itself to small misalignments or changes in the atmosphere. Even if you turn off the power, it remembers its alignment data thanks to fixed sensors - useful for fixed setups or observatories.<\/p>\n\n\n\n

Great power, light weight<\/strong>
With an impressive load capacity of 52 kg<\/strong> and its own weight of only 26 kg, the CEM120EC2 offers an unprecedented ratio of strength to ease of use. You can carry heavy optics without the mount becoming bulky or unwieldy.<\/p>\n\n\n\n

Neat, smart and user-friendly<\/strong>
The advanced cable management system<\/strong> prevents cable knots and breaks. The Losmandy saddle clamp<\/strong> is individually adjustable and spring-loaded, keeping your telescope firmly in place.
With Wi-Fi, LAN and GPS<\/strong> you control everything remotely - whether through the Go2Nova\u00ae 8407 V2 controller.<\/strong> or your laptop is. Within minutes, you'll be ready to explore the sky.<\/p>\n\n\n\n

Performance you can rely on<\/strong>
The permanent periodic error correction (PPEC)<\/strong> and real-time PEC<\/strong> work together with the encoders to ensure nearly flawless tracking. You get razor-sharp astrophotos, even at long exposure times.<\/p>\n\n\n\n

The iOptron CEM120EC2<\/strong> is built for demanding astrophotographers who want top performance, every night.<\/p>\n\n\n\n

Specifications<\/h3>\n\n\n\n

Capacity<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Series<\/td>CEM120<\/td><\/tr>
Type<\/td>Equatorial mount<\/td><\/tr>
Max. load capacity<\/td>52 kg<\/td><\/tr>
Mounting weight<\/td>26 kg<\/td><\/tr>
Counterweight<\/td>2 \u00d7 10 kg<\/td><\/tr>
Mounting saddle<\/td>Losmandy-style<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Mechanical & Motor<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Design<\/td>Centrally balanced (CEM)<\/td><\/tr>
Encoders<\/td>Yes, double (RA & DEC)<\/td><\/tr>
Motors<\/td>Stepper motors (128 microsteps)<\/td><\/tr>
Periodic error correction<\/td>Yes (real-time & permanent)<\/td><\/tr>
Tracking accuracy<\/td>\u00b10,15\u2033<\/td><\/tr>
Wormwheel (RA\/DEC)<\/td>216 mm, 360 teeth, aluminum<\/td><\/tr>
Wormas<\/td>26 mm brass<\/td><\/tr>
Shaft diameter (RA\/DEC)<\/td>80 mm<\/td><\/tr>
Bearing diameter<\/td>125 mm<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Connectivity & Control<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
GoTo System<\/td>Go2Nova\u00ae 8407 V2<\/td><\/tr>
Interfaces<\/td>RS232, USB, LAN, Wi-Fi<\/td><\/tr>
PC control<\/td>Yes (ASCOM compatible)<\/td><\/tr>
GPS<\/td>32-channel built-in<\/td><\/tr>
Autoguider port<\/td>Yes (ST-4)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Use & Setting<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Height range<\/td>0\u00b0-68\u00b0<\/td><\/tr>
Azimuth fine adjustment<\/td>\u00b15\u00b0<\/td><\/tr>
Polar alignment without a pole star<\/td>Yes<\/td><\/tr>
Level indicator<\/td>Yes<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Nutrition & Power<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Nutrition<\/td>12V DC (included)<\/td><\/tr>
Power consumption<\/td>700-1800 mA<\/td><\/tr>
Current<\/td>5 A<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Other data<\/strong><\/p>\n\n\n\n

Feature<\/th>Description<\/th><\/tr><\/thead>
Tripod<\/td>Not included<\/td><\/tr>
Total weight<\/td>46 kg<\/td><\/tr>
Cable guide<\/td>Internal<\/td><\/tr>
Suitable for<\/td>Astrophotography, observatory use<\/td><\/tr><\/tbody><\/table><\/figure>","protected":false},"excerpt":{"rendered":"

iOptron CEM120EC2 comes with GoTo mount, dual high precision encoders, 2\u00d710 kg counterweights, Wi-Fi, LAN, GPS, ST-4 autoguider port and Go2Nova 8407 V2 hand controller - perfect for ultimate astrophotographic precision with real-time correction.<\/p>","protected":false},"featured_media":96775,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[2790],"product_cat":[56,3097,3120,3100,590,538,3116],"product_tag":[],"class_list":["post-32689","product","type-product","status-publish","has-post-thumbnail","product_brand-ioptron","product_cat-telescoop-accessoires","product_cat-astrofotografie-monteringen","product_cat-equatoriale-monteringen","product_cat-geared-eq-mounts","product_cat-montering-accessoires","product_cat-monteringen","product_cat-telescoop-monteringen","product_shipping_class-licht","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"acf":[],"jetpack_sharing_enabled":true,"jetpack-related-posts":[{"id":32747,"url":"https:\/\/staging.telescoop.nl\/en\/ioptron-cem40-ec-montering-goto-high-precision-encoder-met-2-statief\/","url_meta":{"origin":32689,"position":0},"title":"iOptron CEM40-EC Mount GoTo High Precision Encoder with 2\u2033 tripod","author":"","date":"07-11-2025","format":false,"excerpt":"iOptron CEM40-EC wordt geleverd met GoTo-montering, high precision encoder op beide assen, iPolar poolzoeker, 4,5\u202fkg contragewicht, 2\" statief, Go2Nova 8407+ handcontroller en ingebouwde GPS \u2013 ideaal voor astrofotografie zonder guiding.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM40-EC-Montering-GoTo-High-Precision-Encoder-met-2-statief-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM40-EC-Montering-GoTo-High-Precision-Encoder-met-2-statief-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM40-EC-Montering-GoTo-High-Precision-Encoder-met-2-statief-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM40-EC-Montering-GoTo-High-Precision-Encoder-met-2-statief-1.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":32688,"url":"https:\/\/staging.telescoop.nl\/en\/ioptron-cem120ec-montering-goto-high-precision-encoder\/","url_meta":{"origin":32689,"position":1},"title":"iOptron CEM120EC Mount GoTo High Precision Encoder","author":"","date":"06-11-2025","format":false,"excerpt":"iOptron CEM120EC wordt geleverd met high precision encoder, GoTo-montering, 2x10\u202fkg contragewichten, GPS, Wi-Fi, LAN, ST-4 autoguiderpoort en Go2Nova 8407 V2-handcontroller \u2013 perfect voor foutloze tracking en astrofotografische precisie.","rel":"","context":"Similar post","block_context":{"text":"Similar post","link":""},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM120EC-Montering-GoTo-High-Precision-Encoder-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM120EC-Montering-GoTo-High-Precision-Encoder-3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM120EC-Montering-GoTo-High-Precision-Encoder-3.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/staging.telescoop.nl\/wp-content\/uploads\/2025\/11\/iOptron-CEM120EC-Montering-GoTo-High-Precision-Encoder-3.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":32748,"url":"https:\/\/staging.telescoop.nl\/en\/ioptron-cem40-ec-goto-high-precision-encoder-met-stativ-40mm\/","url_meta":{"origin":32689,"position":2},"title":"iOptron Newton CEM40-EC with High Precision Encoders on Tripod","author":"","date":"07-11-2025","format":false,"excerpt":"iOptron CEM40-EC comes with Go2Nova 8407+ hand controller, sturdy tripod, integrated iPolar polar finder and transport cases - 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