{"product_id":"shelyak-se0248","title":"Shelyak 530 nm UVEX order filter kit","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eDesigned for the Shelyak Instruments UVEX Spectrograph\u003c\/li\u003e\n\u003cli\u003eSuppresses 2nd Order Near-Infrared (IR) Spectral Contamination\u003c\/li\u003e\n\u003cli\u003eEnsures Cleaner, More Accurate Spectroscopic Data\u003c\/li\u003e\n\u003cli\u003eMounts directly to the rear of the UVEX slot support\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\u003e530 nm UVEX order filter kit\u003c\/h2\u003e\n      \u003cp\u003eThe 530 nm UVEX order filter kit is a critical accessory for the Shelyak UVEX spectrograph, engineered to solve the specific problem of second-order spectral contamination. When observing targets with significant near-infrared (IR) emissions, this filter prevents false signals from appearing in your visible spectrum, ensuring the data you collect is clean. By suppressing this unwanted second-order light, the 530 nm filter allows for unambiguous identification of spectral features.\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\u003eEliminate Spectral Contamination: The 530nm UVEX Order Filter\u003c\/h3\u003e\n      \u003cp\u003eIn spectroscopy, a diffraction grating can produce multiple spectra, or \"orders.\" The second order of a near-IR wavelength can overlap with the first-order spectrum of a visible wavelength, creating an artifact that corrupts your data. This 530 nm order filter is designed to block this specific type of contamination, making it essential for achieving scientific-grade results with your UVEX.\u003c\/p\u003e\n      \u003cp\u003eThe filter is designed for straightforward integration, screwing directly onto the rear of the UVEX's slot support. This placement ensures it effectively filters the light path without complicating your imaging train, resulting in cleaner spectra and more reliable measurements of stellar classifications, emission lines, and other astrophysical phenomena.\u003c\/p\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 primary purpose of the 530 nm UVEX order filter kit?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe primary purpose of the 530 nm UVEX order filter is to \u003cstrong\u003esuppress the second order of the near-infrared (IR) spectrum\u003c\/strong\u003e. This prevents false spectral lines from IR sources from contaminating your visible-light spectrum, leading to cleaner and more accurate scientific data.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWhen observing a Be star with my UVEX, do I need the 530 nm order filter?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eYes, observing a Be star is an excellent use case for this filter. Be stars often have strong hydrogen-alpha emission in the red part of the spectrum and can have significant IR emission. Using the 530 nm filter ensures that the second-order light from this IR emission does not create artifacts in the blue-green portion of your spectrum, allowing for accurate characterization of the star's properties.\u003c\/p\u003e\n  \u003c\/div\u003e\n    \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIf I'm observing the H-alpha line at 656nm with my UVEX, is this filter necessary?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eWhen your primary target is a red-end wavelength like H-alpha (656nm), which is above the filter's likely cutoff, this filter is generally not needed and would block the light you intend to measure. This filter is most useful when you are observing targets in the blue and green parts of the spectrum (below 530 nm) and want to eliminate contamination from IR sources.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eHow is the 530 nm UVEX order filter installed?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eThe filter is designed to be screwed directly onto the \u003cstrong\u003erear of the UVEX slot support\u003c\/strong\u003e. This simple and secure mounting method integrates the filter seamlessly into the spectrograph's optical path.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eWill the 530 nm UVEX filter impact the brightness or focus of my spectrum?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eLike any filter, it will cause a minor reduction in light throughput, but this is a necessary trade-off for eliminating significant spectral contamination. The impact on focus should be negligible, as it is a thin, high-quality optical component designed specifically for the UVEX system.\u003c\/p\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion\"\u003e\n    \u003ch3 class=\"DAV-accordion-Q\"\u003eIs the 530 nm order filter required for all observations with the Shelyak UVEX?\u003c\/h3\u003e\n  \u003c\/div\u003e\n  \u003cdiv class=\"DAV-accordion-A\"\u003e\n    \u003cp\u003eNo, it is not required for all observations. It is specifically needed when you are concerned about second-order contamination from near-IR sources. If you are observing targets with little to no IR emission, or if your scientific goals are not impacted by potential low-level contamination, you may not need to use it.\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_UVEX_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 UVEX 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":52943053488413,"sku":"SHK-SE0248","price":187.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/Shelyak-530-nm-UVEX-order-filter-kit-1_c63b0dd0-657d-4ba4-88f8-6be4e6469bc9.jpg?v=1789616501","url":"https:\/\/davidastro.com\/en-us\/products\/shelyak-se0248","provider":"David Astro","version":"1.0","type":"link"}