{"product_id":"phoenix-7x50mm-filter-wheel","title":"Phoenix 7x50mm Filter Wheel","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe Phoenix 7x50mm is a motorized filter wheel from Player One Astronomy that holds seven 50 mm unmounted filters and cycles them under software control. It threads into the imaging train with M54×0.75 on both faces, adds 21 mm of optical length, and offers a 49 mm clear aperture to keep large sensors free of filter-induced vignetting. A hybrid stepping motor with Hall-sensor positioning drives the wheel to each slot with nearly vibration-free changes.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThis is a good match if you run a filtered deep-sky workflow with a larger sensor and want more than five positions — a full LRGB plus narrowband set, or several narrowband and dual-band options, changed automatically between subframes. The 49 mm clear path and 50 mm unmounted filters suit APS-C and larger sensors.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeven filter positions:\u003c\/strong\u003e for 50 mm unmounted filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e49 mm clear aperture:\u003c\/strong\u003e a wide light path to reduce filter vignetting on larger sensors.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54×0.75 threads both sides:\u003c\/strong\u003e a direct interface into a standard M54 imaging train.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e21 mm optical thickness:\u003c\/strong\u003e a fixed, known contribution to the backfocus budget.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHybrid stepping motor with Hall-sensor positioning:\u003c\/strong\u003e repeatable, nearly vibration-free slot changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUSB Type-C control:\u003c\/strong\u003e a single cable for computer control within capture software.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAluminum 6061-T6 body:\u003c\/strong\u003e a rigid housing at 665 g.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe wheel carries seven slots for 50 mm unmounted filters and presents a 49 mm clear aperture, threading M54×0.75 on both faces to sit between the camera and the optics. Its 21 mm physical thickness is the amount it contributes to the imaging train, added to the camera's own backfocus and any spacers when reaching a flattener or reducer's specified distance. A hybrid stepping motor turns the wheel with Hall-sensor (magnet) detection referencing each position, and the mechanism is designed for near-vibration-free filter changes. Control is over USB Type-C; the body is machined from Aluminum 6061-T6. This is a standalone motorized wheel.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLRGB plus narrowband:\u003c\/strong\u003e a seven-slot set covering L, R, G, B and several narrowband filters in one wheel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNarrowband imaging:\u003c\/strong\u003e cycling Ha, OIII, SII and dual\/tri-band filters between subframes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge-sensor imaging:\u003c\/strong\u003e the 49 mm clear path and 50 mm filters cover APS-C and larger formats.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eCompatibility and Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eThe M54×0.75 interfaces mate with Player One's M54 camera and adapter ecosystem — the wheel integrates with the Poseidon series, Zeus series, Artemis series, Ares series, Uranus PRO and Apollo PRO cameras. It accepts 50 mm unmounted filters only (not 2\" mounted). Because it adds a fixed 21 mm to the train, the total distance to a flattener or reducer is met with the camera's backfocus plus the appropriate spacers. If you would like the spacing worked out for your specific camera and flattener, send us your imaging train and we will confirm it with you.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e50 mm unmounted filters only:\u003c\/strong\u003e this wheel takes 50 mm unmounted filters, not 2\" mounted — worth matching when you choose your filter set.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFilters are separate:\u003c\/strong\u003e purchased to suit your imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIt adds 21 mm to the train:\u003c\/strong\u003e a fixed figure to include in the backfocus budget alongside the camera and spacers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54×0.75 interface:\u003c\/strong\u003e pairs directly with M54 cameras and adapters; other threads are reached with the matching adapter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePublished weight is 665 g:\u003c\/strong\u003e part of the load carried by the focuser once the camera and filters are attached.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eNo — it threads into the M54 train between the camera and optics, connects over USB Type-C, and is driven from capture software; the 21 mm thickness is a fixed figure to include when you set your backfocus.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat filters does it take?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eSeven 50 mm unmounted filters. It does not accept 2\" mounted filters.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhich cameras does it work with?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eIt integrates with Player One's Poseidon, Zeus, Artemis and Ares series, plus the Uranus PRO and Apollo PRO, through the M54×0.75 interface.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it vignette my sensor?\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eThe 49 mm clear aperture is sized to pass the light cone for APS-C and larger sensors, reducing filter-induced vignetting compared with smaller filter formats.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\u003cp\u003eIn short: a seven-position motorized wheel for 50 mm unmounted filters, M54×0.75 on both sides, 21 mm thick with a 49 mm clear path and USB-C control — an automated filter changer sized for larger sensors that drops into a Player One M54 imaging train with a known, fixed backfocus contribution.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":53834305634415,"sku":"PW7-50","price":558.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/PW750-1-scaled.jpg?v=1784240219","url":"https:\/\/ontariotelescope.com\/products\/phoenix-7x50mm-filter-wheel","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}