{"product_id":"baader-planetarium-t-2-tilter-0-1-image-correction","title":"Baader Planetarium T-2 Tilter (0 - 1° image correction)","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eCorrects sensor tilt for sharp stars edge-to-edge\u003c\/li\u003e\n\u003cli\u003eProvides 0 to 1° of fine tilt adjustment\u003c\/li\u003e\n\u003cli\u003eFeatures standard T-2 (M42x0.75) threads for universal compatibility\u003c\/li\u003e\n\u003cli\u003eEssential for fast optical systems (f\/5 and below)\u003c\/li\u003e\n\u003cli\u003eEnables precise sensor-to-focal-plane alignment\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\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\u003eT-2 Tilter (0 - 1° image correction)\u003c\/h2\u003e\n\u003cp\u003eThe T-2 Tilter provides precise image plane adjustment to eliminate elongated stars caused by sensor tilt. It offers a continuous correction range from 0 to 1 degree, allowing you to achieve a perfectly flat field, even with fast optical systems.\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\u003eCorrecting Field Tilt: 0 to 1° of Precise Adjustment\u003c\/h3\u003e\n\u003cp\u003eField tilt occurs when your camera's sensor is not perfectly perpendicular to the telescope's optical axis, resulting in sharp stars in one area of the frame and elongated stars in another. The T-2 Tilter directly addresses this by allowing you to make micro-adjustments to the sensor's angle, providing up to 1° of correction to square the focal plane perfectly.\u003c\/p\u003e\n\u003cp\u003eThis level of control is critical for imagers using fast systems, such as f\/4 Newtonians or f\/2 RASA\/Hyperstar setups, where the depth of focus is extremely shallow and even minor tilt is immediately visible. By using the tilter, you can ensure your stars are pinpoint sharp across the entire sensor.\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\u003eIntegrating the T-2 Tilter into Your Imaging Train\u003c\/h3\u003e\n\u003cp\u003eDesigned around the universal T-2 (M42x0.75) thread standard, this tilter integrates seamlessly into almost any astrophotography imaging train. It is typically placed as close to the camera sensor as possible, often between the filter wheel and the camera body itself.\u003c\/p\u003e\n\u003cp\u003eThe adjustment mechanism allows for deliberate, repeatable changes without having to disassemble your setup. This enables you to iteratively test and refine the sensor alignment until you achieve a uniformly sharp field, saving valuable time under clear skies.\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 is the primary function of the T-2 Tilter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe T-2 Tilter is designed to correct for \u003cstrong\u003efield tilt\u003c\/strong\u003e, a common issue in astrophotography where the camera sensor is not perfectly perpendicular to the light path. This misalignment causes stars in one or more corners of the image to appear elongated or out of focus while the center remains sharp. The tilter allows you to make fine angular adjustments to square the sensor to the optical axis, ensuring sharp stars across the entire frame.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhere should I place the T-2 Tilter in my imaging setup?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eFor best results, the T-2 Tilter should be placed as close to the camera sensor as possible. The ideal location is typically right before the camera body, after any filter wheels, filter drawers, or off-axis guiders. This ensures that you are adjusting the camera sensor itself relative to the corrected optical path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eIs the T-2 Tilter necessary for my 8\" f\/10 SCT?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile any system can exhibit tilt, it is most pronounced in \"fast\" optical systems (typically f\/5.5 or faster). An f\/10 Schmidt-Cassegrain has a more forgiving depth of focus, so minor tilt may not be visible. However, if you are using a focal reducer that brings your system to f\/7 or f\/6.3, or if you notice persistent, one-sided star elongation, the T-2 Tilter can be a valuable tool for achieving perfect correction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I know how much to adjust the T-2 Tilter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eAdjusting a tilter is an iterative process. You start by taking a short exposure of a dense star field. Analyze the image to see which corner or edge has the most elongated stars. You then make a small adjustment to the tilter to \"push\" the sensor plane in that direction. Take another test image and repeat the process until stars are uniformly round across the entire field. Software tools like N.I.N.A.'s Aberration Inspector can make this process much faster.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the T-2 Tilter correct for coma or field curvature?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eNo. The T-2 Tilter is a mechanical adjuster and corrects only for sensor tilt. It does not correct for optical aberrations like \u003cstrong\u003ecoma\u003c\/strong\u003e (common in Newtonians) or \u003cstrong\u003efield curvature\u003c\/strong\u003e (common in refractors and SCTs). For those issues, you need a dedicated optical corrector, such as a coma corrector or a field flattener.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the T-2 Tilter add significant length to my imaging train?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhile any component adds some length, tilters are generally designed to be as thin as possible to minimize their impact on back focus. You must account for its optical path length when calculating your back focus spacing, especially when used with a reducer or flattener that has a strict back focus requirement.\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\u003ca href=\"https:\/\/davidastro.com\/pages\/baader-planetarium-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eBaader Planetarium Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Baader Planetarium","offers":[{"title":"Default Title","offer_id":52913178968349,"sku":"BAA-2958855","price":223.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/BaaderPlanetarium-T-2-Tilter-0-1-image-correction-1_c09ed0af-b43e-4ce7-9557-f5fa19c55617.jpg?v=1789087335","url":"https:\/\/davidastro.com\/fr-us\/products\/baader-planetarium-t-2-tilter-0-1-image-correction","provider":"David Astro","version":"1.0","type":"link"}