{"product_id":"zwo-ff131-apo-am7-bundle","title":"ZWO FF131 APO Refractor w\/ AM7 Astrophotography Bundle","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eTelescope:\u003c\/strong\u003e ZWO FF131 APO 131mm f\/7.5 Quadruplet Refractor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImage Circle:\u003c\/strong\u003e 44mm, corrected for full-frame sensors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e ZWO AM7 Strain-Wave GoTo Equatorial Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePayload Capacity:\u003c\/strong\u003e 44 lb. without counterweights, 66 lb. with\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSupport System:\u003c\/strong\u003e ZWO TC40 Carbon Fiber Tripod and PE200 Pier Extension\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c!-- more --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli class=\"active\"\u003eDescription\u003c\/li\u003e\n\u003cli\u003eFAQ\u003c\/li\u003e\n\u003cli\u003eSpecifications\u003c\/li\u003e\n\u003cli\u003eIn the Box\u003c\/li\u003e\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\u003cli class=\"active\"\u003e\n\u003cdiv\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section-center\"\u003e\n\u003ch2\u003eZWO FF131 APO Refractor w\/ AM7 Astrophotography Bundle\u003c\/h2\u003e\n\u003cp\u003eThis ZWO FF131 APO Refractor w\/ AM7 Astrophotography Bundle combines a 131mm self-flattening quadruplet astrograph with a high-capacity strain-wave mount for a complete, full-frame imaging platform. The FF131 APO's 983mm focal length and 44mm image circle are well matched to the AM7 mount's 44 lb. counterweight-free payload capacity and \u0026lt;±10\" periodic error. The included TC40 carbon fiber tripod weighs just 5.07 lb. but supports 110.23 lb., while the PE200 pier adds 200mm of clearance for meridian flips.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe ZWO FF131 \u0026amp; AM7 Bundle: A 4-Part Astrophotography System\u003c\/h3\u003e\n\u003cp\u003eThis bundle integrates four key ZWO components into a single, cohesive astrophotography system designed for stability, optical correction, and ease of use. It includes the FF131 APO optical tube, the AM7 strain-wave mount, the lightweight TC40 carbon fiber tripod, and the PE200 pier extension. The result is a turnkey solution for imagers who want to use full-frame cameras without needing to research and match individual components.\u003c\/p\u003e\n\u003cp\u003eBy providing the telescope, mount, and support system in one package, ZWO has engineered a complete rig where every part is matched to the others. The system is built around the AM7's ability to carry the 20.72 lb. FF131 OTA without counterweights, creating a powerful yet streamlined setup for capturing deep-sky objects at a 983mm focal length.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe AM7 Mount \u0026amp; FF131 OTA: A 44 lb Capacity for the 20.72 lb Telescope\u003c\/h3\u003e\n\u003cp\u003eThe core of this bundle is the pairing of the AM7 mount with the FF131 OTA. The telescope, fully dressed with its included handle, mounting rings, and 300mm Losmandy-style dovetail, weighs 20.72 lb. The AM7 mount's native payload capacity is 44 lb. without requiring any counterweights.\u003c\/p\u003e\n\u003cp\u003eThis leaves a substantial 23 lb. margin for your imaging train, including a full-frame camera, filter wheel, off-axis guider, and electronic focuser. This generous headroom ensures the strain-wave drive operates well within its optimal range, delivering precise tracking without being stressed by a load near its limit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eFF131 APO Optics: A 131mm f\/7.5 Self-Flattening Quadruplet\u003c\/h3\u003e\n\u003cp\u003eThe FF131 APO is built on a 4-element, air-spaced apochromatic optical design. With a 131mm aperture and a 983mm focal length, the f\/7.5 system provides an image scale well-suited for resolving details in medium-sized galaxies and nebulae. The quadruplet lens arrangement is engineered to correct for optical aberrations across the visual spectrum without needing a separate accessory lens.\u003c\/p\u003e\n\u003cp\u003eThis design minimizes chromatic aberration, or color fringing, ensuring that stars appear as sharp, color-pure points of light. By integrating the field-flattening element directly into the main optical train, ZWO simplifies the imaging setup and eliminates a potential source of flexure or tilt.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eThe 44mm Image Circle: Native Full-Frame Correction\u003c\/h3\u003e\n\u003cp\u003eA key feature of the FF131 APO is its self-flattening design that produces a 44mm corrected image circle. This is large enough to fully illuminate full-frame sensors (typically 43.3mm diagonal), providing sharp, pinpoint stars from the center to the corners of your frame. You can take full advantage of large-format CMOS or DSLR cameras without vignetting or distorted stars at the edges.\u003c\/p\u003e\n\u003cp\u003eBecause the field correction is native to the optics, you do not need an external field flattener. This removes the complexity of calculating and setting a precise back focus distance. Your imaging train simply needs to achieve focus within a generous 42mm to 73mm range from the M48x0.75 adapter thread.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eMechanical Design: A 3\" Dual-Speed Focuser and 20.72 lb. OTA\u003c\/h3\u003e\n\u003cp\u003eTo support heavy imaging loads, the FF131 APO is equipped with a rigid 3\" rack-and-pinion focuser. This design prevents slippage and flexure, even with a large camera and filter wheel attached. The focuser features a dual-speed 1:10 fine adjustment knob for achieving critical focus, and a built-in 360° rotator allows for precise framing of your target without rotating the entire camera.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFocuser Travel:\u003c\/strong\u003e Provides 31mm of travel for a wide range of accessories.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRetracted Length:\u003c\/strong\u003e The telescope measures 878mm with the dew shield retracted, making it more manageable for transport.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting Hardware:\u003c\/strong\u003e Includes a 300mm Losmandy-style dovetail plate and two findershoes for attaching a guide scope or other accessories.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAM7 Strain-Wave Drive: \u0026lt;±10\" PE and a 44 lb Counterweight-Free Payload\u003c\/h3\u003e\n\u003cp\u003eThe ZWO AM7 mount uses a strain-wave gear system and synchronous belt drive to carry a 44 lb. payload without counterweights, while the mount head itself weighs only 14.9 lb. For heavier setups, adding a counterweight (sold separately) to the included shaft increases the capacity to 66 lb. The drive delivers precise tracking with a native periodic error of less than ±10 arcseconds over its 288-second cycle.\u003c\/p\u003e\n\u003cp\u003eEvery AM7 mount is tested before shipping and includes its own unique periodic error report. The RA axis also features a power-off brake, which automatically engages during a power failure to prevent the telescope from swinging and protect your equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eAM7 Control: Dual-Mode Operation from 0° to 90° Latitude\u003c\/h3\u003e\n\u003cp\u003eThe AM7 operates in both German Equatorial mode for precise long-exposure imaging and Alt-Azimuth mode for simple visual observing. With a latitude adjustment range of 0° to 90°, the mount can be polar aligned and used anywhere on Earth. Control is flexible, with options for wired or wireless operation.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHand Controller:\u003c\/strong\u003e The included hand controller provides direct control and acts as a Wi-Fi hotspot for connecting via the SkyAtlas mobile app.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless \u0026amp; Wired Control:\u003c\/strong\u003e Connect via Wi-Fi, Bluetooth, or USB to control the mount with ASIAIR, ASCOM, or INDI drivers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCable Management:\u003c\/strong\u003e USB-C and 12V DC power ports on the saddle plate reduce cable drag by allowing you to power your camera and accessories through the mount itself.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eSupport System: The 5.07 lb TC40 Tripod and 200mm PE200 Pier\u003c\/h3\u003e\n\u003cp\u003eThe foundation of the bundle is the ZWO TC40 Carbon Fiber Tripod and PE200 Pier Extension. The TC40 tripod weighs only 5.07 lb. but has a tested load capacity of 110.23 lb., providing a rigid, vibration-dampening base that is easy to transport. Its height adjusts from 18.5\" to 31.49\".\u003c\/p\u003e\n\u003cp\u003eThe included PE200 pier extension adds 200mm of vertical clearance between the tripod and the AM7 mount. This is critical for preventing the 878mm-long FF131 OTA from colliding with the tripod legs during an automated meridian flip, enabling safe, unattended imaging sessions that track objects across the entire sky.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eZWO AM7 vs. AM5N: Choosing Based on Payload\u003c\/h3\u003e\n\u003cp\u003eWhile both the AM7 and its smaller sibling, the AM5N, use the same core strain-wave drive technology, the AM7 is built for heavier instrument loads. The primary difference is payload capacity, which makes the AM7 the correct choice for an optical tube of the FF131's size and weight.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO AM5N Advantage:\u003c\/strong\u003e The AM5N is more portable, with a lighter mount head and a 33 lb. capacity (without counterweights), which suits smaller refractors and travel setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZWO AM7 Advantage:\u003c\/strong\u003e The AM7 provides a higher 44 lb. native capacity (66 lb. with a counterweight), offering the stability and margin required for the 20.72 lb. FF131 plus a heavy, full-frame imaging train.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-bg-light\"\u003e\n\u003cdiv class=\"DAV-section\"\u003e\n\u003ch3\u003eYour First Night With the FF131 \u0026amp; AM7 Bundle: From Setup to First Light\u003c\/h3\u003e\n\u003cp\u003eSetting up this integrated system is a streamlined process. Start by extending the TC40 tripod legs and attaching the PE200 pier, followed by the AM7 mount head. Mount the 20.72 lb. FF131 OTA onto the dual Losmandy\/Vixen saddle; no balancing is required thanks to the strain-wave drive.\u003c\/p\u003e\n\u003cp\u003eAfter connecting the 12V, 5A power supply, use your camera and preferred software (like an ASIAIR) to perform a software-assisted polar alignment. Attach your camera to the focuser's M48 thread, point to a bright star, and use the 1:10 fine focus knob to achieve a sharp image. You are now ready to slew to your first deep-sky target and begin imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the advantage of the ZWO FF131 \u0026amp; AM7 bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThis bundle provides a complete, factory-matched astrophotography system. The \u003cstrong\u003eZWO AM7 mount's 44 lb. capacity\u003c\/strong\u003e is well suited to the \u003cstrong\u003eFF131 OTA's 20.72 lb. weight\u003c\/strong\u003e, leaving ample margin for cameras. The self-flattening \u003cstrong\u003e131mm telescope\u003c\/strong\u003e with its \u003cstrong\u003e44mm image circle\u003c\/strong\u003e, the high-precision mount, the lightweight \u003cstrong\u003eTC40 tripod\u003c\/strong\u003e, and the \u003cstrong\u003ePE200 pier extension\u003c\/strong\u003e are all designed to work together.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a field flattener for the ZWO FF131 APO?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The ZWO FF131 APO features a 4-element quadruplet optical design with a native flat field. This \"self-flattening\" system produces a corrected \u003cstrong\u003e44mm image circle\u003c\/strong\u003e without requiring any additional flattener or complex back focus calculations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow much equipment can the ZWO AM7 mount carry with the FF131?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe AM7 mount has a \u003cstrong\u003e44 lb. payload capacity without a counterweight\u003c\/strong\u003e. With the FF131 OTA weighing \u003cstrong\u003e20.72 lb.\u003c\/strong\u003e, you have over 23 lb. of remaining capacity for your camera, filter wheel, guide scope, and other accessories before a counterweight is needed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy is the PE200 pier extension included in this FF131 bundle?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO FF131 APO has a retracted tube length of \u003cstrong\u003e878mm\u003c\/strong\u003e. The included \u003cstrong\u003ePE200 pier extension adds 200mm of height\u003c\/strong\u003e, which provides critical clearance to prevent the telescope or camera from colliding with the tripod legs during an automated meridian flip. This is essential for safe, unattended imaging.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the ZWO FF131 APO's 44mm image circle cover my full-frame camera?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. A standard full-frame sensor has a diagonal of approximately 43.3mm. The FF131 APO's \u003cstrong\u003e44mm image circle\u003c\/strong\u003e fully covers these sensors, providing sharp, unvignetted stars from corner to corner.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the FF131 APO's 983mm focal length frame large targets like the Andromeda Galaxy (M31)?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003e983mm focal length\u003c\/strong\u003e provides a relatively tight field of view. When paired with a full-frame sensor, you can capture the bright core and a significant portion of the spiral arms of the Andromeda Galaxy (M31). However, to fit the entire galaxy in a single frame, a shorter focal length or a mosaic would be required. The image scale is excellent for medium-sized targets like the Triangulum Galaxy (M33) or the Dumbbell Nebula (M27).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use the ZWO FF131 APO for visual observing?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. Although optimized for imaging, the apochromatic optics deliver excellent high-contrast views. The \u003cstrong\u003e3\" focuser\u003c\/strong\u003e accepts a standard 2\" diagonal, allowing you to use wide-field eyepieces for deep-sky objects or high-power eyepieces for detailed views of the Moon and planets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat power supply does the ZWO AM7 mount require?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe ZWO AM7 requires a \u003cstrong\u003e12V DC power source rated for at least 5A\u003c\/strong\u003e, with a 5.5x2.1mm center-positive connector. An audible alarm will sound if the input voltage drops below 10.8V, indicating insufficient power.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I control the ZWO AM7 mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou can control the ZWO AM7 via multiple methods:\n\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded Hand Controller:\u003c\/strong\u003e For direct GoTo and tracking control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWi-Fi\/Bluetooth:\u003c\/strong\u003e Use the SkyAtlas mobile app for wireless control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eASIAIR:\u003c\/strong\u003e Connect for a fully integrated imaging and mount control solution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePC via USB:\u003c\/strong\u003e Use ASCOM or INDI drivers to control the mount with software like N.I.N.A. or Sequence Generator Pro.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes the ZWO AM7 mount in this bundle need to be balanced?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The strain-wave gear design of the ZWO AM7 does not require precise balancing like traditional German equatorial mounts. You can simply mount the \u003cstrong\u003e20.72 lb. FF131 OTA\u003c\/strong\u003e and your camera gear and begin imaging, saving significant setup time in the field.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eZWO FF131 APO Telescope\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Design\u003c\/td\u003e\n\u003ctd\u003eApochromatic Refractor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAperture\u003c\/td\u003e\n\u003ctd\u003e131mm (5.15\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003e983 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Ratio\u003c\/td\u003e\n\u003ctd\u003ef\/7.5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptical Elements\u003c\/td\u003e\n\u003ctd\u003e4 (Quadruplet)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage Circle\u003c\/td\u003e\n\u003ctd\u003e44 mm (full frame)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser\u003c\/td\u003e\n\u003ctd\u003e3\" Dual-Speed Rack \u0026amp; Pinion\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocuser Travel\u003c\/td\u003e\n\u003ctd\u003e31 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBack Focus Range\u003c\/td\u003e\n\u003ctd\u003e42-73 mm from M48x0.75 thread\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCamera Connection\u003c\/td\u003e\n\u003ctd\u003eM48x0.75 male and M54x0.75 male\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOTA Weight\u003c\/td\u003e\n\u003ctd\u003e17.42 lb. (20.72 lb. with handle, rings and dovetail)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Length (retracted)\u003c\/td\u003e\n\u003ctd\u003e878 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTube Outer Diameter\u003c\/td\u003e\n\u003ctd\u003e125 mm (dew shield 157 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded Dovetail\u003c\/td\u003e\n\u003ctd\u003e300 mm Losmandy-style\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eZWO AM7 Mount\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePayload Capacity\u003c\/td\u003e\n\u003ctd\u003e44 lb. (without counterweight), 66 lb. (with counterweight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMount Head Weight\u003c\/td\u003e\n\u003ctd\u003e14.9 lb.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrive System\u003c\/td\u003e\n\u003ctd\u003eStepper Motor with Synchronous Belt \u0026amp; Strain Wave Gear\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotor Resolution\u003c\/td\u003e\n\u003ctd\u003e0.17\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeriodic Error\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;±10\" (288 s period)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSaddle Type\u003c\/td\u003e\n\u003ctd\u003eDual Vixen \u0026amp; Losmandy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLatitude Range\u003c\/td\u003e\n\u003ctd\u003e0° to 90°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAzimuth Adjustment\u003c\/td\u003e\n\u003ctd\u003e± 7.5°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSlew Speeds\u003c\/td\u003e\n\u003ctd\u003e0.5x, 1x, 2x, 4x, 8x, 20x, 60x, 720x, 1440x\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirements\u003c\/td\u003e\n\u003ctd\u003e12V, 5A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Failure Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003eHand controller, Wi-Fi, Bluetooth, USB (ASCOM, INDI, ASIAIR)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAutoguider Port\u003c\/td\u003e\n\u003ctd\u003eST4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd\u003e-4°F to 104°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eZWO TC40 Tripod\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeg Material\u003c\/td\u003e\n\u003ctd\u003eCarbon Fiber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight Capacity\u003c\/td\u003e\n\u003ctd\u003e110.23 lb.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTripod Weight\u003c\/td\u003e\n\u003ctd\u003e5.07 lb.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight Range\u003c\/td\u003e\n\u003ctd\u003e18.5\" to 31.49\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Leg Diameter\u003c\/td\u003e\n\u003ctd\u003e1.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\u003ctd colspan=\"2\"\u003e\u003cstrong\u003eZWO PE200 Pier Extension\u003c\/strong\u003e\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight Extension\u003c\/td\u003e\n\u003ctd\u003e200 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eAircraft-Grade Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLoad Capacity\u003c\/td\u003e\n\u003ctd\u003eup to 50 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e1.6 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 131 mm APO Refractor OTA\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eMounting Rings\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1 Pair\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003e300 mm Losmandy-Style Dovetail Plate\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFindershoes\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 2\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003ePhotography Extension Tube\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAM7 Equatorial Mount\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFoam Carry Case\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHand Controller\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eCounterweight Bar (BC250-M16)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO TC40 Carbon Fiber Tripod\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eZWO 200mm Pier Extension\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAM7 Periodic Error Test Report\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cable, 2m (Type B to A)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eHand Controller Cable (2m)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUSB 2.0 Cable, 1m (USB C to A)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eM6 Hex Wrench\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eUser Manual\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eQuick Start Guide\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eWarranty Card\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eInspection Card\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/wp-content\/uploads\/2026\/06\/98c8207aa35d1cf16d092579eae1387c.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eFF131-APO Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/wp-content\/uploads\/2026\/04\/9772157ab11b61ad54cb77f2d242975e.pdf\" target=\"_blank\"\u003e\u003csvg class=\"DAV-img-box\" viewbox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"\u003e\u003cpath d=\"M0 64C0 28.7 28.7 0 64 0L224 0l0 128c0 17.7 14.3 32 32 32l128 0 0 144-208 0c-35.3 0-64 28.7-64 64l0 144-48 0c-35.3 0-64-28.7-64-64L0 64zm384 64l-128 0L256 0 384 128zM176 352l32 0c30.9 0 56 25.1 56 56s-25.1 56-56 56l-16 0 0 32c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-48 0-80c0-8.8 7.2-16 16-16zm32 80c13.3 0 24-10.7 24-24s-10.7-24-24-24l-16 0 0 48 16 0zm96-80l32 0c26.5 0 48 21.5 48 48l0 64c0 26.5-21.5 48-48 48l-32 0c-8.8 0-16-7.2-16-16l0-128c0-8.8 7.2-16 16-16zm32 128c8.8 0 16-7.2 16-16l0-64c0-8.8-7.2-16-16-16l-16 0 0 96 16 0zm80-112c0-8.8 7.2-16 16-16l48 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 32 32 0c8.8 0 16 7.2 16 16s-7.2 16-16 16l-32 0 0 48c0 8.8-7.2 16-16 16s-16-7.2-16-16l0-64 0-64z\" fill=\"#0047a7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eAM7 Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003cli class=\"DAV-grid-item\"\u003e\u003ca href=\"https:\/\/www.zwoastro.com\/software\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Software\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThis ZWO bundle includes components with different warranty periods. The ZWO FF131 APO telescope optical tube is covered by a 1-year warranty. The ZWO AM7 harmonic equatorial mount is covered by a 2-year warranty. For full details, please see the \u003ca href=\"https:\/\/davidastro.com\/pages\/zwo-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eZWO Warranty\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":67945435988253,"sku":"ZWO-ZH131APO-2","price":7764.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/zwo-ff131-apo-am7-bundle-1.jpg?v=1793650013","url":"https:\/\/davidastro.com\/products\/zwo-ff131-apo-am7-bundle","provider":"David Astro","version":"1.0","type":"link"}