{"product_id":"shelyak-se0192","title":"Shelyak Lhires III Slit Holder","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eEnables rapid slit changes for the Lhires III spectroscope\u003c\/li\u003e\n\u003cli\u003eImproves observational efficiency in the field\u003c\/li\u003e\n\u003cli\u003eCompatible with standard, wide, and photometric slits\u003c\/li\u003e\n\u003cli\u003eSecurely holds slits for repeatable results\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\n\u003cli\u003eDownloads\u003c\/li\u003e\n\u003cli\u003eWarranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\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\u003eLhires III Slit Holder\u003c\/h2\u003e\n      \u003cp\u003eThe Shelyak Lhires III Slit Holder is an essential accessory designed to significantly streamline your spectroscopic workflow. It allows for the rapid exchange of different slits, enabling you to quickly adapt the Lhires III spectroscope for various observational targets and scientific goals. This holder is compatible with Shelyak's wide, photometric, and standard slits, providing critical operational flexibility during an observing session.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eStreamline Slit Changes on the Lhires III\u003c\/h3\u003e\n      \u003cp\u003eFor observers using the Lhires III for multiple projects in a single night, changing slits can be a time-consuming process. The Lhires III Slit Holder eliminates this bottleneck by allowing you to swap between different slit types in seconds. This ensures you spend more time acquiring data and less time reconfiguring your instrument in the dark.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n  \n  \u003cdiv class=\"DAV-bg-light\"\u003e\n    \u003cdiv class=\"DAV-section\"\u003e\n      \u003ch3\u003eAdapt to Multiple Spectroscopic Targets\u003c\/h3\u003e\n      \u003cp\u003eThis holder is the key to unlocking the full scientific potential of your Lhires III by providing a secure and repeatable mounting point for Shelyak's range of specialized slits.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eStandard Slits:\u003c\/strong\u003e Use for general-purpose, high-resolution stellar spectra of bright targets.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eWide Slits:\u003c\/strong\u003e Switch to these for capturing more light from faint objects like comets or nebulae, sacrificing some resolution for a stronger signal.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePhotometric Slits:\u003c\/strong\u003e Install for precise brightness measurements, where capturing the total flux from a star is more critical than fine spectral detail.\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the main advantage of using the Lhires III Slit Holder?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003e\u003cstrong\u003eEfficiency.\u003c\/strong\u003e The primary benefit of the Lhires III Slit Holder is the ability to change slits very quickly without complex disassembly of the spectroscope. This saves valuable observing time and allows you to adapt your instrument to changing targets or conditions with minimal downtime.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhich slits are compatible with the Lhires III Slit Holder?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe Lhires III Slit Holder is specifically designed to be used with the family of slits made by Shelyak for the Lhires III spectroscope. This includes their \u003cstrong\u003estandard, wide, and photometric slits\u003c\/strong\u003e.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eDo I need a separate Lhires III Slit Holder for each slit I own?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, a single holder is installed in the spectroscope, and you can insert your various slits into it. However, some advanced users purchase multiple holders and pre-install their most-used slits to make field swaps nearly instantaneous.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIf I am studying a Be star like Gamma Cassiopeiae and then a faint comet, how does the Lhires III Slit Holder help?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThis is a perfect use case. You would use a narrow, standard slit for the high-resolution spectrum of the bright Be star. With the Lhires III Slit Holder, you can then quickly swap to a wide slit to maximize light collection from the faint, diffuse comet, all without a lengthy and difficult reconfiguration in the dark.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eI want to perform photometry on an eclipsing binary with my Lhires III. Which slit should I use with the holder?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eFor photometry, you would use the dedicated \u003cstrong\u003ephotometric slit\u003c\/strong\u003e with your Lhires III Slit Holder. This type of slit is designed to ensure all the starlight enters the spectroscope, which is critical for accurate brightness measurements, even if it results in lower spectral resolution.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs installation of the Lhires III Slit Holder difficult?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe holder is designed for straightforward integration into the Lhires III spectroscope body. For detailed instructions, please refer to the official Shelyak Lhires III user manual, which covers the replacement of the slit assembly.\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/li\u003e\n\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\/Shelyak_Lhires_III_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\"\u003eShelyak Lhires III Manual\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/shelyak-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eShelyak 1-Year Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shelyak","offers":[{"title":"Default Title","offer_id":52943050440989,"sku":"SHK-SE0192","price":197.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Shelyak-Lhires-III-slit-holder-1_8610993a-8ede-4c31-b8ed-4de9a5be8e5e.jpg?v=1789616417","url":"https:\/\/davidastro.com\/fr\/products\/shelyak-se0192","provider":"David Astro","version":"1.0","type":"link"}