{"product_id":"warp-astron-warpdrive-wd-20ep-mount-head-only","title":"Warp Astron WarpDrive WD-20EP (Mount Head Only)","description":"\u003ch2 dir=\"ltr\" style=\"text-align: center;\"\u003eWarpAstron WarpDrive WD-20EP \u003c\/h2\u003e\n\u003ch2 dir=\"ltr\" style=\"text-align: center;\"\u003e High Precision Strain Wave Mount with RA Absolute Encoder (Mount Head Only)\u003c\/h2\u003e\n\u003cp dir=\"ltr\"\u003eMeet the mount that finally puts precision and power exactly where your imaging train needs them. The WD-20EP takes WarpAstron's acclaimed EC drive system and adds intelligent USB-C power delivery right at the saddle, so your camera and accessories get clean power without a cable jungle wrapped around your axes.\u003c\/p\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eTrue Axis Feedback, Not Just a Better Gear — a high-resolution absolute encoder sits at the RA axis output itself, measuring real position across the entire axis rather than estimating it from the motor, so what you see is what your sky actually gets\u003c\/li\u003e\n\u003cli\u003eServo Direct Drive Precision — a dual-encoder servo direct-drive system on RA pairs an input encoder for instant correction with strain wave gearing for near-zero backlash, no belts, no aging, and nothing to adjust over time\u003c\/li\u003e\n\u003cli\u003eSeriously Low Periodic Error — rated at under ±3 arcsec (encoder corrected), a dramatic drop from the ±15 arcsec typical of strain-wave-gear-only designs, for a noticeably cleaner guiding signal\u003c\/li\u003e\n\u003cli\u003eGuide Smarter, Not Harder — lower periodic error means you can stretch guiding exposures from 1s up to 3s or more, ride out bad seeing without chasing every fluctuation, and even get serious about unguided imaging at shorter focal lengths\u003c\/li\u003e\n\u003cli\u003ePower Where You Actually Need It — dual USB-C outputs live right at the saddle (Port A: 5\/9\/12\/15\/20V PD3.1, up to 6A max; Port B: 5~20V PD3.1\/PPS up to 3A, doubles as a mount PC connection), keeping cables short and your rig tidy\u003c\/li\u003e\n\u003cli\u003eBuilt to Handle the Field — machined from AL6061, stainless steel, and brass, weighing just 5.7kg while supporting 22kg unguided and up to 30kg with counterweights, all rated from -25°C to 45°C thanks to a belt-free design that shrugs off the cold\u003c\/li\u003e\n\u003cli\u003eQuiet, Confident Motion — BLDC servo motor direct drive means no gear whine and no stepper buzz, just smooth, near-silent tracking all night long\u003c\/li\u003e\n\u003cli\u003eSafety Baked In, Not Bolted On — hardware-level EC HA limits based on the RA absolute encoder plus Automatic Emergency Brake \u0026amp; Reverse, layered with software overhead, horizon, and meridian limits for genuine fail-safe protection\u003c\/li\u003e\n\u003cli\u003eHome In On Target, Every Time — RA absolute encoder homing paired with a DEC optical homing sensor gets you oriented fast and accurately, session after session\u003c\/li\u003e\n\u003cli\u003eSpeaks Your Software's Language — runs on the OnStepX system with full ASCOM\/INDI\/LX200\/INDIGO protocol support, connecting over USB Type-C for effortless PC integration\u003c\/li\u003e\n\u003cli\u003eEvery Unit, Individually Verified — each mount ships with its own Axis PE Report, so the precision isn't just a spec sheet promise, it's measured and proven for your specific unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 dir=\"ltr\"\u003eSpecifications\u003c\/h1\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eMount Type: Equatorial\/Altazimuth\u003c\/li\u003e\n\u003cli\u003eReduction Gear: RA 20 Strain Wave Reducer \/ DEC 17 Strain Wave Reducer\u003c\/li\u003e\n\u003cli\u003eDrive: RA Dual Encoder Servo Direct-drive \/ DEC Servo Direct-drive\u003c\/li\u003e\n\u003cli\u003eOutput Encoder: High Resolution Absolute Encoder at RA axis output\u003c\/li\u003e\n\u003cli\u003eMotor: BLDC Servo Motor\u003c\/li\u003e\n\u003cli\u003eWeight: 5.7kg (12.5lb)\u003c\/li\u003e\n\u003cli\u003eLoad Capacity: 50Nm standard \/ 60Nm max allowed — 22kg\/44lb without counterweights, 30kg\/66lb with counterweights\u003c\/li\u003e\n\u003cli\u003eMaterial: AL6061, Stainless Steel, Brass\u003c\/li\u003e\n\u003cli\u003eBrake: RA Axis (45Nm)\u003c\/li\u003e\n\u003cli\u003eDovetail: Vixen \u0026amp; Losmandy\u003c\/li\u003e\n\u003cli\u003eCounterweight Shaft: M12 Shaft (1.75mm Pitch)\u003c\/li\u003e\n\u003cli\u003eMax Slew Rate: 10°\/s\u003c\/li\u003e\n\u003cli\u003eAdjustment Range: ALT 0~90° (3-position coarse, 30° fine) \/ AZ ±8°\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -25°C ~ 45°C\u003c\/li\u003e\n\u003cli\u003ePeriodic Error: ±3 arcsec (encoder corrected)\u003c\/li\u003e\n\u003cli\u003eSaddle Powering: Port A 5\/9\/12\/15\/20V PD3.1, 0~20V PPS, 6A max \/ Port B 5~20V PD3.1\/PPS 3A max, also functions as Mount PC Connection\u003c\/li\u003e\n\u003cli\u003eSystem: OnStepX\u003c\/li\u003e\n\u003cli\u003eSafety Features: Hardware EC HA Limit (based on RA absolute encoder), AEB (Automatic Emergency Brake \u0026amp; Reverse); Software Overhead\/Horizon Limits, Meridian Limits\u003c\/li\u003e\n\u003cli\u003eProtocol: ASCOM \/ INDI \/ LX200 \/ INDIGO\u003c\/li\u003e\n\u003cli\u003eHome Control: RA Absolute encoder \/ DEC Optical homing sensor\u003c\/li\u003e\n\u003cli\u003ePC Connection: USB Type-C\u003c\/li\u003e\n\u003cli\u003eTime\/Location: GPS via Advanced Hand Controller\u003c\/li\u003e\n\u003cli\u003ePower Input: 12~25V, 5.5*2.5mm DC, 5A motion only \/ 10A with saddle powering\u003c\/li\u003e\n\u003cli\u003eWireless: WiFi (AP\/Station modes) \/ BLE via Advanced Hand Controller\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 dir=\"ltr\"\u003eWhat's in the Box?\u003c\/h1\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eWarpAstron WD-20EP Mount Head\u003c\/li\u003e\n\u003cli\u003eDC Power Cable\u003c\/li\u003e\n\u003cli\u003eUSB Type-C Cable\u003c\/li\u003e\n\u003cli\u003eCounterweight Shaft (M12, 1.75mm Pitch)\u003c\/li\u003e\n\u003cli\u003eMounting and Dovetail Hardware\u003c\/li\u003e\n\u003cli\u003eAxis PE Report (unique to your unit)\u003c\/li\u003e\n\u003cli\u003eQuick Start Guide\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch1 dir=\"ltr\"\u003eSoftware and Docs\u003c\/h1\u003e\n\u003cul dir=\"ltr\"\u003e\n\u003cli\u003eOnStepX Control System (pre-loaded and ready)\u003c\/li\u003e\n\u003cli\u003eASCOM Driver Support\u003c\/li\u003e\n\u003cli\u003eINDI\/INDIGO Compatibility\u003c\/li\u003e\n\u003cli\u003eLX200 Protocol Support\u003c\/li\u003e\n\u003cli\u003eOptional Advanced Hand Controller integration (sold separately unless bundled): 2 inch OLED touch display, Hall joystick, GPS, WiFi, and BLE for full Dashboard, Motion, GoTo, GPS Sync, Power, Wireless, Safety \u0026amp; Limits, and Night Vision control\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/www.warpastron.com\/wp-content\/uploads\/2026\/08\/WD-20E-Drawing.pdf\" title=\"WD-20E Drawing\"\u003eWD-20E Drawing\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Warp Astron","offers":[{"title":"Default Title","offer_id":53039280849216,"sku":"WD-20EP","price":3799.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/1_d33a1400-3fcb-45b0-9464-cd058bac479a.png?v=1787171890","url":"https:\/\/astroworldtelescopes.com\/products\/warp-astron-warpdrive-wd-20ep-mount-head-only","provider":"Astroworld Telescopes","version":"1.0","type":"link"}