{"product_id":"double-stack-filter-for-lunt-130mm-telescope","title":"Double Stack Filter for Lunt 130mm Telescope","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eLFPT — Internal Double Stack Module\u003c\/strong\u003e \u003cem\u003eFor Lunt LS130MT \u0026amp; LS152 Telescopes.\u003c\/em\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003e\u003cem\u003eNow with new-generation etalons — every unit individually tested on Lunt's precision metrology equipment. Every specification is verified, not estimated.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe LFPT is the internal double-stack module for Lunt's 130mm and 152mm telescopes — the DS upgrade for the largest instruments in the Lunt modular range. It adds a second precision etalon to the internal optical path, reducing combined system bandpass to \u0026lt;0.28Å and delivering the highest contrast H-alpha performance available in any Lunt modular telescope.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eAt 130mm or 152mm aperture with \u0026lt;0.28Å combined bandpass, the level of chromospheric detail revealed is exceptional. Individual intergranular network elements become resolvable. Active region magnetic architecture shows complexity not visible in smaller or single-stack systems. Plage structure reveals fine internal organisation — bright knots and threads of concentrated magnetic field within the broader active region. Prominence dynamics can be studied in real time with genuine scientific detail. At this aperture and bandpass, the chromosphere becomes a research instrument as much as an observing experience.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe LFPT is designed for customer installation — no factory return required. It can be purchased at the time of telescope acquisition or at any point thereafter, making the DS upgrade a genuine deferred investment rather than a permanent commitment at point of sale. Once installed, the module does not affect the telescope's night-sky configuration — remove the solar module and the instrument performs exactly as it did before.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eModel: LFPT — Internal Double Stack Module\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eCompatible With: LS130MT Modular Telescope\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eSingle Stack Bandpass: 0.45Å (telescope internal etalon)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eModule Etalon Bandpass: 0.35Å — individually verified\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eDS Combined Bandpass: \u0026lt;0.28Å — LFPT (0.35Å) + MT internal PT (0.45Å)\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eTuning: Independent Doppler True Barometric pressure tuning\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eInstallation: Customer-installed — no factory return required\u003c\/li\u003e\n\u003cli class=\"whitespace-normal break-words pl-2\"\u003eNight Sky Use: No impact — internal module does not affect night configuration\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Starizona","offers":[{"title":"Default Title","offer_id":48746672455937,"sku":"DSII\/LS130MTP","price":2995.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0327\/2569\/6648\/files\/LFPTforLS130MT_LS152T.png?v=1778110724","url":"https:\/\/starizona.com\/products\/double-stack-filter-for-lunt-130mm-telescope","provider":"Starizona","version":"1.0","type":"link"}