{"id":4237,"date":"2025-03-06T21:29:03","date_gmt":"2025-03-06T20:29:03","guid":{"rendered":"https:\/\/deep-space-astronomy.geekworkers.dev\/produit\/esatto-3\/"},"modified":"2026-10-31T02:03:27","modified_gmt":"2026-10-31T01:03:27","slug":"esatto-3","status":"publish","type":"product","link":"https:\/\/deep-space-astronomy.ch\/en\/product\/esatto-3\/","title":{"rendered":"PrimaLuceLab ESATTO 3-inch Motorized Eyepiece Holder"},"content":{"rendered":"

ESATTO 3-inch robotic eyepiece holder<\/h3>\n

The PrimaLuceLab ESATTO 3-inch is a motorized eyepiece holder with built-in electronics designed for photographic setups that require a large aperture and high load capacity.<\/p>\n

The Crayford mechanism features twenty-eight bearings and a travel of twenty-five millimeters. Its rated load capacity is eight kilograms, which makes it possible to use cameras paired with a filter wheel or an optical splitter, provided that the entire driven assembly is taken into account.<\/p>\n

The resolution of 0.04 micrometers per step refers to the focus increment published by PrimaLuceLab. It should not be confused with a guaranteed absolute precision for the entire optical system. The rigidity of the interfaces and the adjustment of other components must still be verified during integration.<\/p>\n

Optical Subsystem Interfaces and Spacing<\/h3>\n

The thickness is 58 mm, or 77 mm with the internal flange. These two values correspond to distinct mechanical configurations and are not interchangeable. Sufficient space must be provided in the instrument\u2019s rear mounting while maintaining the travel required to achieve focus.<\/p>\n

The camera-side output has an M81 \u00d7 1 male thread. Optional photographic adapters with a stop ring allow you to connect different cameras and maintain their framing angle. The choice of ring depends on the actual thread size of the accessory being attached; it is not sufficient to rely solely on the nominal diameter of the eyepiece holder.<\/p>\n

PrimaLuceLab also offers adapters for connecting the ESATTO to various telescopes. The manufacturer specifically lists large refractors, Ritchey-Chr\u00e9tien, and Cassegrain telescopes among its applications. However, these categories do not guarantee that every model can be connected directly without an appropriate interface.<\/p>\n

ARCO Remote Control and Extension<\/h3>\n

The USB-C port connects to an EAGLE or a Windows computer. The USB cable listed as included allows connection to the computer's USB port. ASCOM drivers provide access to control functions in compatible software, while PLAY offers an alternative control interface.<\/p>\n

Wi-Fi and the Virtual HandPad also allow you to adjust the focus from a phone or tablet. This feature is useful for visual observation when a data acquisition computer isn\u2019t needed. It does not turn the eyepiece holder into a universal accessory for all telescope mechanisms.<\/p>\n

The ARCO port accepts a compatible rotator via a short connector, allowing for camera angle adjustment or de-rotation depending on the configuration. ARCO remains an optional accessory for this model. The official, verified specifications on the webpage confirm an ESATTO model PLLEST3, not a package that includes a rotator or universal camera adapters.<\/p>\n

Technical specifications<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Reference<\/th>\nPLLEST3<\/td>\n<\/tr>\n
Mechanism<\/th>\nCrayford with 28 bearings<\/td>\n<\/tr>\n
Free opening<\/th>\n76.3 mm<\/td>\n<\/tr>\n
Reported charge<\/th>\n8 kg<\/td>\n<\/tr>\n
Race<\/th>\n25 mm<\/td>\n<\/tr>\n
Resolution<\/th>\n0.04 \u00b5m per step<\/td>\n<\/tr>\n
Thickness<\/th>\n58 mm, 77 mm with internal flange<\/td>\n<\/tr>\n
Camera Output<\/th>\nM81 \u00d7 1 male<\/td>\n<\/tr>\n
Control<\/th>\nUSB-C, Wi-Fi, PLAY, and ASCOM<\/td>\n<\/tr>\n
Rotating port<\/th>\nARCO<\/td>\n<\/tr>\n
Mass<\/th>\n1,345 g<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

PrimaLuceLab Official Fact Sheet<\/a><\/p>\n

Choose your ESATTO 3\" rings<\/h3>\n

For your telescope :<\/h4>\n
    \n
  • Takahashi FSQ85:<\/strong> Take the PL3600271 ring to connect the focuser.<\/li>\n
  • Takahashi TSA120 :<\/strong> Take ring PL3600296.<\/li>\n
  • Takahashi with M72 thread :<\/strong> Take ring PL3600245.<\/li>\n
  • RC GSO\/Orion\/TPO (10\", 12\", 14\", or 16\"):<\/strong> Take ring PL3600236.<\/li>\n
  • Borg 90FL f\/3.9 or 107FL f\/3.9 :<\/strong> Take ring PL3600268.<\/li>\n
  • SkyWatcher ESPRIT 100 ED :<\/strong> Take ring PL3600288.<\/li>\n
  • SkyWatcher ESPRIT 120 ED or 150 ED :<\/strong> Take ring PL3600253.<\/li>\n
  • Meade 16\" with 4\" thread:<\/strong> Take ring PL3600292.<\/li>\n<\/ul>\n

    For your accessories :<\/h4>\n
      \n
    • Accessory with T2 thread :<\/strong> Take ring PL3600282 (M81 to T2 adapter with locking ring).<\/li>\n
    • Accessory with M48 thread :<\/strong> Take ring PL3600277 (M81 to M48 adapter with locking ring).<\/li>\n
    • Accessory with M54 thread :<\/strong> Take ring PL3600275 (M81 to M54 adapter with locking ring).<\/li>\n
    • Borg accessory with M57 thread :<\/strong> Take ring PL3600279 (M81 to M57 adapter with locking ring).<\/li>\n
    • Accessory with M68 thread (female) :<\/strong> Use the PL3600262 ring (M81-to-M68 adapter with a stop ring).<\/li>\n
    • Accessory with M68 thread (male) :<\/strong> Take ring PL3600289.<\/li>\n
    • Takahashi accessory with M72 thread:<\/strong> Take ring PL3600272 (M81 to M72 adapter with locking ring).<\/li>\n
    • Accessory with M72 thread (male) :<\/strong> Take ring PL3600252.<\/li>\n
    • Accessory with 2-inch nosepiece :<\/strong> Take ring PL8410002.<\/li>\n<\/ul>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

      The PrimaLuceLab ESATTO 3-inch is a motorized eyepiece holder with built-in electronics designed for photographic setups that require a large aperture and high load capacity.<\/p>","protected":false},"featured_media":17203,"comment_status":"open","ping_status":"closed","template":"","meta":[],"product_brand":[594],"product_cat":[609,19,575],"product_tag":[],"class_list":["post-4237","product","type-product","status-publish","has-post-thumbnail","product_brand-primalucelab","product_cat-systeme-de-map-robotique","product_cat-accessoires","product_cat-astrophotographie","first","on_supplier","taxable","shipping-taxable","purchasable","product-type-simple"],"_links":{"self":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product\/4237","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/comments?post=4237"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media\/17203"}],"wp:attachment":[{"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/media?parent=4237"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_brand?post=4237"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_cat?post=4237"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/deep-space-astronomy.ch\/en\/wp-json\/wp\/v2\/product_tag?post=4237"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}