{"product_id":"kowa-tsn-as1-25g-1-25-astronomy-eyepiece-adapter-for-prominar-grub-screws","title":"Kowa TSN-AS1.25G 1.25\" Astronomy Eyepiece Adapter for PROMINAR, Grub Screws","description":"\u003cul class=\"DAV-feature-list\"\u003e\n\u003cli\u003eAdapts standard 1.25\" astronomy eyepieces to Kowa PROMINAR spotting scopes\u003c\/li\u003e\n\u003cli\u003eCompatible with TSN-99, TSN-88, TSN-77, and TSN-66 series scopes\u003c\/li\u003e\n\u003cli\u003eGrub screws, particularly suitable for very short focal length eyepieces\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\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\u003eKowa TSN-AS1.25G 1.25\" Astronomy Eyepiece Adapter for PROMINAR, Grub Screws\u003c\/h2\u003e\n\u003cp\u003eThe Kowa TSN-AS1.25G adapter combines 1.25\" astro eyepieces with Kowa's TSN-99, TSN-88, TSN-77 and TSN-66 PROMINAR series spotting scopes, so you can use eyepieces you already own on these scopes (the TSN-550 series is excluded).\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\u003eUnlocking 1.25\" Eyepiece Compatibility for PROMINAR Scopes\u003c\/h3\u003e\n\u003cp\u003eThe TSN-AS1.25G takes the place of the Kowa eyepiece and accepts a 1.25\" astro eyepiece, so observers who already own 1.25\" eyepieces can use them on a TSN-99, TSN-88, TSN-77 or TSN-66 PROMINAR scope.\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\u003eThe Grub Screw Advantage for Short Focal Length Eyepieces\u003c\/h3\u003e\n\u003cp\u003eThe TSN-AS1.25G holds the eyepiece with grub screws. Kowa notes that the grub screws make this adapter particularly suitable for very short focal length eyepieces. For quick eyepiece changes, Kowa offers the TSN-AS1.25K with knurled screws.\u003c\/p\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\"\u003eWhich Kowa spotting scopes are compatible with the TSN-AS1.25G adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa lists the TSN-AS1.25G for the \u003cstrong\u003eTSN-99, TSN-88, TSN-77 and TSN-66 PROMINAR series\u003c\/strong\u003e spotting scopes. The TSN-550 series is excluded.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWhy does the Kowa TSN-AS1.25G use grub screws?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa says the grub screws make this adapter particularly suitable for very short focal length eyepieces. If you change eyepieces often, the TSN-AS1.25K version uses knurled screws for quick changes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill my 1.25\" astronomy eyepieces reach focus with the TSN-AS1.25G adapter?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa does not publish focus travel figures or a list of tested 1.25\" eyepieces for this adapter, so focus with a given eyepiece is not something we can confirm from Kowa's information.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eHow would I use the TSN-AS1.25G adapter for high-power birdwatching with my TSN-88 scope?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eKowa notes that the grub screw version is particularly suitable for very short focal length eyepieces, which give the higher magnifications. The magnification you get depends on the eyepiece you fit.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion\"\u003e\n\u003ch3 class=\"DAV-accordion-Q\"\u003eWill the grub screws on the TSN-AS1.25G damage my eyepiece barrels?\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"DAV-accordion-A\"\u003e\n\u003cp\u003eGrub screws press directly on the eyepiece barrel and can mark the finish if over-tightened. Tighten them only enough to hold the eyepiece securely.\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\u003eUPC\u003c\/td\u003e\n\u003ctd\u003e4987646102212\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003eKowa Limited Lifetime Warranty to the original owner (authorized North American retailer)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/davidastro.com\/pages\/kowa-warranty-policy\" rel=\"noopener\" target=\"_blank\"\u003eKowa Limited Lifetime Warranty\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Kowa","offers":[{"title":"Default Title","offer_id":67954385420573,"sku":"KOW-TSN-AS1.25G","price":30.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/5280\/1565\/files\/kowa-tsn-as1-25g-1-25-astronomy-eyepiece-adapter-for-prominar-grub-screws-1_1a96b97f-1316-4991-a0fb-01813f5a96d9.jpg?v=1793723877","url":"https:\/\/davidastro.com\/en-us\/products\/kowa-tsn-as1-25g-1-25-astronomy-eyepiece-adapter-for-prominar-grub-screws","provider":"David Astro","version":"1.0","type":"link"}