{"product_id":"baader-planetarium-imp85-extension-37-mm-for-ir90-focuser-and-teleskop","title":"Baader Planetarium IMP85 Extension 37 mm – for IR90 Focuser and Teleskop","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eProvides 37 mm of fixed extension\u003c\/li\u003e\n\u003cli\u003eDesigned for the IMP85 Instrument Port Selector\u003c\/li\u003e\n\u003cli\u003eCompatible with the IR90 Focuser\u003c\/li\u003e\n\u003cli\u003eEnables parfocal alignment of multiple instruments\u003c\/li\u003e\n\u003cli\u003eSolid, rigid construction for flex-free connections\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\u003eIMP85 Extension 37 mm – for IR90 Focuser and Teleskop\u003c\/h2\u003e\n\u003cp\u003eThe IMP85 Extension adds a precise 37 mm of optical path length, specifically for adapting the IMP85 Instrument Port Selector and IR90 Focuser. This 37 mm extension is the key to achieving a parfocal relationship between multiple instruments, allowing you to switch from a deep-sky camera on one port to a spectrograph on another with minimal refocusing.\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\u003eA 37 mm Spacer for Parfocal IMP85 Setups\u003c\/h3\u003e\n\u003cp\u003eThe IMP85 Instrument Port Selector is a powerful tool for remote and public observatories, enabling multiple instruments to be attached to a single telescope. This 37 mm extension is a critical component for realizing that system's full potential. It solves the common challenge of matching the focal planes of different devices—like a deep-sky camera on the main port and a planetary camera on a side port—by providing a fixed, rigid increase in the optical path. This ensures that when you electronically switch between instruments, they are already in focus, saving valuable observing time.\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\"\u003eWhen do I need the IMP85 37 mm Extension?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYou need this 37 mm extension when your camera, filter wheel, or other accessory requires additional backfocus to reach the correct focal plane with the IMP85 Instrument Port Selector or IR90 Focuser. It provides a fixed, rigid spacing solution.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow does the 37 mm Extension help create a parfocal system with the IMP85?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe IMP85 allows switching between three instrument ports. To make these instruments \u003cstrong\u003eparfocal\u003c\/strong\u003e (focus at the same point), you often need to adjust the path length for each one. This 37 mm extension is one of the components used to equalize those path lengths, minimizing refocusing when you switch from, for example, a camera to a spectrograph.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the IMP85 37 mm Extension required for all cameras?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo, it is not required for all setups. Its necessity depends entirely on the backfocus requirements of your specific camera and any other accessories in the optical train. It is a problem-solving component for achieving specific spacing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I use this 37 mm Extension for my remote observatory's imaging setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAbsolutely. This extension is ideal for remote observatories using the IMP85 system. It helps create a permanently mounted, parfocal setup with multiple instruments, reducing the need for manual reconfiguration. For example, you can use it to correctly space a planetary camera on a side port of the IMP85.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat problem does the 37 mm Extension solve on a public observatory telescope with an IR90 focuser?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor a public observatory, this extension allows a camera to remain permanently attached and parfocal with an eyepiece. You can switch from visual observing with guests to imaging with the camera without lengthy setup changes, by ensuring both optical paths come to focus at the same point.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the IMP85 37 mm Extension part of a larger modular system?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes. It is designed as a component for the highly adaptable ecosystem around the IMP85 Instrument Port Selector and IR90 Focuser. Various adapters and extensions are available to accommodate a wide range of telescopes and imaging equipment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ctable class=\"DAV-specifications\"\u003e\n\u003ctbody\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cul class=\"DAV-grid\"\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePlease check the manufacturer's website for warranty information.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913132110109,"sku":"BAA-2451320","price":669.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-IMP85-Extension-37-mm-for-IR90-Focuser-and-Teleskop-1_4c7981c8-6aa4-47c9-9dd6-10617a8bc69b.jpg?v=1789086555","url":"https:\/\/davidastro.com\/fr-us\/products\/baader-planetarium-imp85-extension-37-mm-for-ir90-focuser-and-teleskop","provider":"David Astro","version":"1.0","type":"link"}