{"product_id":"sfpt-double-stack-ls80mt-ls100mt","title":"Lunt Solar Systems Double Stack Filter for Lunt 80 mm \u0026 100 mm Universal Telescopes","description":"\u003cp\u003e\u003cstrong\u003eNow equipped with Lunt’s newer, higher-performing etalons, these telescopes deliver a tighter ≤0.35Å FWHM per etalon, improved from the previous ~0.55Å design. In double-stack configuration, system bandwidth drops to approximately 0.22Å for even greater contrast and finer solar surface detail.\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch5 id=\"sfpt-internal-double-stack-module-for-lunt-80-mm-100-mm-universal-day-and-night-telescopes\"\u003eSFPT Internal Double Stack Module for Lunt 80 mm \u0026amp; 100 mm Universal Day and Night Telescopes\u003c\/h5\u003e\n\u003cp\u003eDouble stacking provides a truly enhanced, high definition view of the Sun’s surface details. Notably, it lowers the bandpass of the system from \u0026lt;0.7 Angstrom to \u0026lt;0.5 Angstrom, which really makes the surface “pop”!\u003c\/p\u003e\n\u003cp\u003eThe Lunt 80 mm and 100mm Universal Telescopes can be internally double-stacked at the time of purchase or anytime thereafter. Furthermore, neither telescope module will need to be returned to the factory for double-stacking.\u003c\/p\u003e\n\u003cp\u003eYou can purchase the 80 mm or 100 mm single stack universal telescope initially and add the SFPT to make it a double stack unit later. This will make it more affordable to purchase our a new universal telescope and still have room for upgrades. Once you upgrade your Lunt Universal Telescope with the double stack unit, you will be able to see the finer details not previously visible.\u003c\/p\u003e\n\u003cp\u003eFind the latest news and photos of the Sun at \u003ca href=\"https:\/\/www.nasa.gov\/sun\"\u003eNASA\u003c\/a\u003e.\u003c\/p\u003e","brand":"Lunt Solar Systems","offers":[{"title":"Default Title","offer_id":48956581642492,"sku":"DSII\/SFPTP","price":1494.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0610\/7702\/9116\/files\/DS2-80-Double-Stack-Filter-Lunt-Solar-Telescope.jpg?v=1775935037","url":"https:\/\/usa.all-startelescope.com\/products\/sfpt-double-stack-ls80mt-ls100mt","provider":"All-Star Telescope Canada","version":"1.0","type":"link"}