{"product_id":"pegasus-astro-digital-temperature-sensor-for-dewmaster2-1-2m","title":"Pegasus Astro Digital Temperature Sensor for DewMaster2 (1.2m)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables probe-based dew control for the Pegasus Astro DewMaster2\u003c\/li\u003e\n\u003cli\u003eDirectly monitors optical tube temperature\u003c\/li\u003e\n\u003cli\u003e1.2-meter cable length for flexible routing\u003c\/li\u003e\n\u003cli\u003eConnects via a standard 3.5mm stereo jack\u003c\/li\u003e\n\u003cli\u003eCompatible with both T1 and T2 probe sockets\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\u003ePegasus Astro Digital Temperature Sensor for DewMaster2 (1.2m)\u003c\/h2\u003e\n\u003cp\u003eThe Pegasus Astro Digital Temperature Sensor is a 1.2-meter probe designed to unlock precise, direct temperature monitoring for your DewMaster2 controller. This sensor plugs directly into one of the two available 3.5mm (T1\/T2) sockets, allowing the DewMaster2 to regulate heater output based on the actual temperature of your telescope's optics, not just the ambient dew point.\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\u003eProbe-Based Dew Control via the 3.5mm Sockets\u003c\/h3\u003e\n\u003cp\u003eWhile the DewMaster2's default \"AutoDew\" mode is effective, it relies on the ambient environmental sensor to estimate dew formation. Adding this digital temperature sensor enables the \"Probe\" mode. By assigning a dew heater output to this probe (Probe T1 or Probe T2), the controller adjusts heater power to keep your optics just above the ambient temperature, which prevents dew while avoiding heat waves that could degrade the image.\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\u003eStrategic Placement: Maintain a 2-4°C Delta\u003c\/h3\u003e\n\u003cp\u003eCorrect placement is critical for optimal results. Position the probe so it touches the telescope's hood or dew shield near the optics, but not the dew heater strip itself, since the strip is warmer than the shield or the optical cell. The DewMaster2 then aims to keep the optics 2-4°C above the ambient temperature: enough to prevent dew without creating heat waves that blur fine detail.\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's the difference between using this Temperature Sensor and the DewMaster2's standard \"AutoDew\" mode?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe standard \u003cstrong\u003eAutoDew mode\u003c\/strong\u003e uses the environmental sensor (ambient temperature and humidity) to calculate the dew point and raises heater power as the dew point approaches the ambient temperature. Using this \u003cstrong\u003eDigital Temperature Sensor\u003c\/strong\u003e enables \u003cstrong\u003eProbe Mode\u003c\/strong\u003e, which uses the temperature measured near your telescope's optics. This keeps the optics 2-4°C above the ambient temperature, preventing dew while minimizing heat waves that can affect image quality.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhere should I place the Digital Temperature Sensor on my telescope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor best results, place the sensor so it touches your telescope's hood or dew shield, near the optics. \u003cstrong\u003eCrucially, do not place it in contact with the dew heater strip itself\u003c\/strong\u003e, as the strip will be warmer than the optics, leading to inaccurate readings and insufficient heating.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use two of these sensors with my Pegasus Astro DewMaster2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. The DewMaster2 has two probe sockets, labeled T1 and T2, allowing you to connect up to two separate temperature sensors. This is ideal for monitoring both a main telescope and a guide scope, ensuring both optical systems remain dew-free throughout your imaging session.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eFor an 8\" SCT with a 60mm guide scope, how would I use two Pegasus Astro Temperature Sensors?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou would attach one sensor to the dew shield of the 8\" SCT, near the corrector plate, and plug it into the T1 socket. Attach the second sensor to the body of the 60mm guide scope and plug it into the T2 socket. In the DewMaster2 output settings, you would then assign the dew heater for the SCT to \"Probe T1\" and the dew heater for the guide scope to \"Probe T2\".\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eDoes this Pegasus Astro sensor measure ambient temperature for the DewMaster2?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. This sensor is designed specifically to measure the temperature of a surface it's in contact with, such as your telescope tube. The ambient air temperature, humidity, and dew point are measured by the separate environmental sensor that plugs into the RJ12 \"EXT\" port on the DewMaster2.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 1.2m cable long enough for a large refractor on an equatorial mount?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe cable is 1.2 m (about 47 inches) long. Measure the path from the probe position near the front of your telescope to where your DewMaster2 is mounted before ordering, especially on long refractors.\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\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003ePegasus Astro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003ePEG-TEMP-SENS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eType\u003c\/td\u003e\n\u003ctd\u003eDigital temperature sensor probe\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible With\u003c\/td\u003e\n\u003ctd\u003ePegasus Astro DewMaster2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCable Length\u003c\/td\u003e\n\u003ctd\u003e1.2 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003e3.5mm stereo jack for T1 \/ T2 sockets\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e30 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBox Dimensions\u003c\/td\u003e\n\u003ctd\u003e10 x 12 x 2 cm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2 years\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\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDigital Temperature Sensor for DewMaster2 (1.2m)\u003c\/p\u003e\n\u003cp class=\"DAV-item-subtitle\"\u003e× 1\u003c\/p\u003e\n\u003c\/div\u003e\n\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:\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Pegasus_Astro_DewMaster_2_Manual.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\"\u003eDownload Manual\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\u003ca href=\"https:\/\/davidastro.com\/pages\/pegasus-astro-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003ePegasus Astro 2-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Pegasus Astro","offers":[{"title":"Default Title","offer_id":52686369587485,"sku":"PEG-TEMP-SENS","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/pegasus-astro-digital-temperature-sensor-for-dewmaster2-1-2m-1.png?v=1793649429","url":"https:\/\/davidastro.com\/en-int\/products\/pegasus-astro-digital-temperature-sensor-for-dewmaster2-1-2m","provider":"David Astro","version":"1.0","type":"link"}