{"product_id":"zeus-455m-pro-imx455-usb3-0-mono-cooled-camera","title":"ZEUS 455M PRO (IMX455) USB3.0 Mono Cooled Camera","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Player One Astronomy ZEUS 455M Pro is a cooled full-frame monochrome USB3.0 camera built on the 61-megapixel Sony IMX455 CMOS sensor. It shares the full-frame IMX455 format (43.3 mm diagonal, 36 mm × 24 mm, 9576 × 6388 pixels) and 3.76 µm pixels with the color ZEUS 455C Pro, but as a monochrome sensor it removes the Bayer filter to reach a peak quantum efficiency of about 91% and full per-pixel resolution. A two-stage TEC cools it 35°C ± 2°C below ambient, and an integrated adjustable anti-dew heater keeps the window clear.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis is a good match if you want the highest-resolution monochrome detail across a full-frame field for narrowband and LRGB imaging. Run with a filter wheel, it captures wide, deeply resolved nebulae and large galaxies — a flagship deep-sky imager for well-corrected full-frame optics.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features \u0026amp; Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSony IMX455 full-frame mono sensor:\u003c\/strong\u003e 61 MP at 9576 × 6388, 3.76 µm pixels, no debayering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak QE about 91%:\u003c\/strong\u003e high mono sensitivity for efficient narrowband capture.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e16-bit ADC, 71.6 ke- full well:\u003c\/strong\u003e wide dynamic range and smooth tonal gradation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRead noise down to 1.27e-:\u003c\/strong\u003e a low floor for faint narrowband signal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo-stage TEC, 35°C ± 2°C below ambient, with anti-dew heater:\u003c\/strong\u003e low noise and condensation control across the large sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eM54 and 2″ interfaces:\u003c\/strong\u003e larger thread to illuminate the full-frame circle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eOptical \/ Mechanical Design\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eRemoving the color filter array lifts peak QE to about 91% and gives every one of the 3.76 µm pixels full spatial resolution across the 43.3 mm diagonal — the configuration serious narrowband and LRGB imagers prefer. The 16-bit ADC finely samples the 71.6 ke- full well for wide dynamic range, and cooling to 35°C ± 2°C below ambient plus the anti-dew heater keep thermal noise and condensation in check. A D55 × 2 mm AR Plus multi-layer coated window covers the sensor.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Zeus455M-QE1.png?v=1784235876\" alt=\"Player One Astronomy ZEUS 455M Pro IMX455 monochrome quantum efficiency QE curve for full-frame narrowband imaging\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eRecommended Uses\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame narrowband:\u003c\/strong\u003e wide, high-resolution H-alpha, OIII, and SII nebula imaging.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLRGB deep-sky work:\u003c\/strong\u003e large galaxies and clusters with oversampled luminance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooled long-exposure projects:\u003c\/strong\u003e faint targets that reward low read noise and deep wells.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompatibility \u0026amp; Accessory Notes\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe ZEUS 455M Pro connects over USB3.0\/USB2.0 (Type-C) and powers its cooler from a 12 V DC input. It uses M54 × 0.75 and 2″ interfaces — use the M54 thread so the imaging train fully illuminates the full-frame sensor. Back focal distance is 17.5 mm with the sensor tilt plate fitted, or 12.5 mm without. As a mono camera it is designed to run with a filter wheel; full-frame filters avoid vignetting the corners.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ZEUS-455M-BFL1_c365aabc-cd39-4c85-8650-e517c8aca91f.jpg?v=1784235876\" alt=\"Player One Astronomy ZEUS 455M Pro 17.5mm back focal length spacing diagram for full-frame imaging trains\" style=\"max-width:100%;height:auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGood to Know Before You Order\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull-frame needs full-frame optics and filters:\u003c\/strong\u003e use a corrector and filters rated for a 43.3 mm image circle to avoid vignetting and corner aberration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor needs filters:\u003c\/strong\u003e a monochrome camera builds color from separate filtered exposures with a filter wheel.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse the M54 thread:\u003c\/strong\u003e smaller threads can vignette the large sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpacing help:\u003c\/strong\u003e back focus is 17.5 mm with the tilt plate (12.5 mm without) — send us your optics and filters and we will confirm the train with you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eFrequently Asked Questions\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eIs it difficult to set up?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo, though it rewards planning. It threads onto M54 or 2″, connects with one USB3.0 Type-C cable, and takes 12 V DC for cooling. Matching full-frame optics, filters, and the 17.5 mm (or 12.5 mm) back focus is the main work; the camera is controlled in software.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is it best used for?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eHigh-resolution monochrome full-frame deep-sky imaging — wide narrowband nebulae and LRGB galaxies and clusters.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow is it different from the ZEUS 455C Pro?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSame IMX455 full-frame sensor and body, but monochrome: higher peak QE (about 91%) and full-resolution detail, at the cost of needing filters for color.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDo I need a filter wheel?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eFor color, yes — mono cameras record one filter at a time and combine channels in processing. Use full-frame filters to cover the sensor.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBottom Line\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIn short: a cooled monochrome camera on the 61 MP full-frame Sony IMX455, with 3.76 µm pixels, about 91% peak QE, a 71.6 ke- full well, 16-bit output, an anti-dew heater, and 35°C of cooling below ambient. Run it with filters and full-frame optics through the M54 thread and it is a flagship narrowband and LRGB imager, set 17.5 mm (or 12.5 mm) behind its front face.\u003c\/p\u003e","brand":"Player One Astronomy","offers":[{"title":"Default Title","offer_id":44014039367791,"sku":"ZEUS-M","price":5178.6,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ZEUS-455M-SIDE-VIEW__85123.jpg?v=1766568417","url":"https:\/\/ontariotelescope.com\/products\/zeus-455m-pro-imx455-usb3-0-mono-cooled-camera","provider":"Ontario Telescope and Accessories","version":"1.0","type":"link"}