{"product_id":"daystar-quantum-h-alpha-solar-filter-se-grade","title":"Daystar Quantum H-alpha Solar Filter - SE Grade","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eChoice of 0.7-0.9Å or 0.3-0.5Å Tunable Hydrogen-Alpha Bandpass\u003c\/li\u003e\n\u003cli\u003eSE (Standard Edition) Grade for Amateur and Academic Use\u003c\/li\u003e\n\u003cli\u003eLive LCD Wavelength Readout with 0.1Å Accuracy\u003c\/li\u003e\n\u003cli\u003eDigital Red\/Blue Wing Shift Tuning for Doppler Studies\u003c\/li\u003e\n\u003cli\u003e12VDC Operation for Field Use\u003c\/li\u003e\n\u003cli\u003eSerial Port for Computer Control\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\u003eDaystar Quantum H-alpha Solar Filter - SE Grade\u003c\/h2\u003e\n\u003cp\u003eThe Daystar Quantum SE brings precision Hydrogen-Alpha solar observation to any refractor, SCT, or Maksutov, in a choice of two tunable bandpasses: a brighter, more forgiving 0.7-0.9Å filter, or a 0.3-0.5Å filter for maximum contrast on the solar disk. Both share the same digital control system, with a live wavelength readout accurate to 0.1Å, and both run on 12VDC from the included 100-240V international adapter, making them ready for use anywhere in the world.\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\u003eTwo Bandpass Options: 0.7-0.9Å and 0.3-0.5Å\u003c\/h3\u003e\n\u003cp\u003eBoth filters are tunable across their stated range, so the choice is about where that range sits rather than whether the filter can be adjusted. A narrower passband raises contrast on the solar disk; a wider one passes more light and is easier to use.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.7-0.9Å:\u003c\/strong\u003e the brighter, more versatile choice. The extra light throughput suits prominences on the limb, shorter exposures, smaller apertures, and visual observing in less than perfect seeing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0.3-0.5Å:\u003c\/strong\u003e the high-contrast choice. The narrower passband isolates the chromosphere more tightly, pulling out filaments, plage, spicules and fine active-region structure on the disk that a wider bandpass washes out.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eObservers who mainly image the solar disk tend to choose 0.3-0.5Å; observers who want one filter to do everything, including bright prominence views, tend to choose 0.7-0.9Å.\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\u003ePrecision Digital Control with 0.1Å Accuracy\u003c\/h3\u003e\n\u003cp\u003eThis filter eliminates guesswork by displaying its exact wavelength output on a live LCD, accurate to 0.1Å. For dynamic events, red and blue wing shift buttons let you precisely tune the bandpass off the central H-alpha line. This capability is critical for Doppler studies, allowing you to observe the motion of plasma in solar flares and other active regions as it moves toward (blue shift) or away from (red shift) you.\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\u003e12VDC Field Operation and Computer Integration\u003c\/h3\u003e\n\u003cp\u003eDesigned for portability, the Quantum SE runs on 12VDC power, making it compatible with common field batteries for observing away from home. For stationary setups, a 100-240V power supply with interchangeable wall plates for the US, Europe, UK, and Australia is included. A built-in serial port also allows for computer control, giving you the ability to display the filter's status and wavelength on-screen for remote or automated imaging.\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\u003eSE Grade: Professional-Level Features for Visual Astronomy\u003c\/h3\u003e\n\u003cp\u003eThe Quantum SE (Standard Edition) grade is engineered for the majority of amateur and academic applications. It meets Daystar's stringent quality control for all visual and most photographic uses, delivering the high-contrast, detailed views the Quantum series is known for. It provides access to advanced features like digital tuning without the stringent optical homogeneity required for specialized professional research.\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\u003eQuantum SE vs. PE Grade: Choosing the Right Filter\u003c\/h3\u003e\n\u003cp\u003eDaystar offers two tiers for its Quantum filters, and the choice depends entirely on your application.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantum PE (Professional Edition):\u003c\/strong\u003e The PE grade's advantage is its superior homogeneity and on-band transmittance values across the entire filter surface. This level of precision is required for professional research studies where quantifiable, uniform data is the primary goal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQuantum SE (Standard Edition):\u003c\/strong\u003e The SE grade is the ideal choice for visual observers and most amateur astrophotographers. It incorporates the same core digital control system and tuning capabilities as the PE grade, delivering scientifically valuable and visually stunning results for a wide range of solar astronomy pursuits.\u003c\/li\u003e\n\u003c\/ul\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\"\u003eShould I choose the 0.7-0.9Å or the 0.3-0.5Å Quantum SE?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eChoose \u003cstrong\u003e0.7-0.9Å\u003c\/strong\u003e if you want one brighter, more forgiving filter for both disk and prominence viewing, or if you are working at a smaller aperture or in average seeing. Choose \u003cstrong\u003e0.3-0.5Å\u003c\/strong\u003e if your priority is maximum contrast on disk features such as filaments, plage and spicules. Both are tunable within their range and share the same electronics and controls.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat is the difference between the Daystar Quantum SE and PE grade filters?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eQuantum SE\u003c\/strong\u003e grade is designed for amateur and academic visual observation and some photography. The \u003cstrong\u003ePE (Professional Edition)\u003c\/strong\u003e grade offers higher precision homogeneity and on-band transmittance required for professional research applications where perfectly uniform data across the sensor is critical.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow do I power the Quantum SE filter in the field?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe filter operates on \u003cstrong\u003e12VDC\u003c\/strong\u003e, making it fully compatible with standard field batteries and portable power supplies. It also includes a universal 100-240V power adapter with international wall plates for home use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow can I use the Quantum SE filter's wing shift to observe a solar flare with my 100mm refractor?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eWhen observing a flare, which involves high-velocity plasma, you can use the red and blue wing shift buttons to tune the filter's bandpass off the central H-alpha line. This allows you to see \u003cstrong\u003eDoppler-shifted material\u003c\/strong\u003e moving towards you (blue-shifted) or away from you (red-shifted), revealing the flare's dynamic structure through your telescope.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhat does the \"on-band\" green light on the Quantum SE filter signify?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eThe green indicator light confirms that the filter's internal etalon has reached its precise operational temperature and is transmitting the correct Hydrogen-alpha wavelength. This simple feature on the Quantum SE ensures you are ready to observe without any guesswork.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eCan I control the Quantum SE filter with a computer?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eYes, the Quantum SE filter includes a \u003cstrong\u003eserial port\u003c\/strong\u003e that allows for computer control. This enables you to view the filter's wavelength readout on-screen and potentially automate tuning for Doppler studies or remote imaging sessions.\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\u003eFilter Type\u003c\/td\u003e\n\u003ctd\u003eHydrogen-Alpha Solar Filter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrade\u003c\/td\u003e\n\u003ctd\u003eSE (Standard Edition)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBandwidth\u003c\/td\u003e\n\u003ctd\u003e0.7Å - 0.9Å or 0.3Å - 0.5Å (tunable, by variant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTuning\u003c\/td\u003e\n\u003ctd\u003eDigital Red\/Blue Wing Shift\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWavelength Readout\u003c\/td\u003e\n\u003ctd\u003eLive LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReadout Accuracy\u003c\/td\u003e\n\u003ctd\u003e0.1Å\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Requirement\u003c\/td\u003e\n\u003ctd\u003e12VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComputer Connectivity\u003c\/td\u003e\n\u003ctd\u003eSerial Port\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatibility\u003c\/td\u003e\n\u003ctd\u003eRefractors, SCTs, Maksutovs\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\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:\/\/www.daystarfilters.com\/downloads\/\" target=\"_blank\"\u003e\u003csvg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 640 512\" class=\"DAV-img-box\"\u003e\u003cpath fill=\"#0047a7\" d=\"M128 32C92.7 32 64 60.7 64 96l0 256 64 0 0-256 384 0 0 256 64 0 0-256c0-35.3-28.7-64-64-64L128 32zM19.2 384C8.6 384 0 392.6 0 403.2C0 445.6 34.4 480 76.8 480l486.4 0c42.4 0 76.8-34.4 76.8-76.8c0-10.6-8.6-19.2-19.2-19.2L19.2 384z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cdiv\u003e\n\u003cp class=\"DAV-item-title\"\u003eDownload Quantum Control Software\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\/daystar-filters-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eDaystar Filters Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Daystar Filters","offers":[{"title":"0.7-0.9Å","offer_id":52935165182237,"sku":"DAY-QSE-P","price":5195.0,"currency_code":"USD","in_stock":true},{"title":"0.3-0.5Å","offer_id":52935165215005,"sku":"DAY-QSE-C","price":8995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/DaystarFilters-Quantum-Hydrogen-Alpha-0-7-0-9-SE-1_782049c3-f2de-4067-9312-63ab1c1523ea.jpg?v=1789520811","url":"https:\/\/davidastro.com\/fr-us\/products\/daystar-quantum-h-alpha-solar-filter-se-grade","provider":"David Astro","version":"1.0","type":"link"}