{"title":"Ursa Major Eyepieces","description":"\u003cp\u003eUrsa Major Eyepieces — browse by series below. Part of \u003ca href=\"\/collections\/eyepieces\"\u003eEyepieces\u003c\/a\u003e.\u003c\/p\u003e","products":[{"product_id":"ursa-major-fmc-flatfield-eyepiece-7-5mm","title":"Ursa Major FMC Flatfield Eyepiece 7.5mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 7.5mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014082621551,"sku":"ursamajor_fmc_ff_ep_7.5mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff_ep_7.5mm_16__17472.jpg?v=1766570303"},{"product_id":"ursa-major-fmc-flatfield-eyepiece-5-5mm","title":"Ursa Major FMC Flatfield Eyepiece 5.5mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 5.5mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014082687087,"sku":"ursamajor_fmc_ff_ep_5.5mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff_ep_5.5mm_7__06926.jpg?v=1766570309"},{"product_id":"ursa-major-fmc-flatfield-eyepiece-3-5mm","title":"Ursa Major FMC Flatfield Eyepiece 3.5mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 3.5mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014082752623,"sku":"ursamajor_fmc_ff_ep_3.5mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff-ep_3.5mm_6__08892.jpg?v=1766570314"},{"product_id":"ursa-major-fmc-flatfield-eyepiece-10mm","title":"Ursa Major FMC Flatfield Eyepiece 10.5mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 10.5mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014082850927,"sku":"ursamajor_fmc_ff_ep_10.5mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff_ep_10.5mm_19__84046.jpg?v=1766570319"},{"product_id":"ursa-major-fmc-flatfield-eyepiece-15mm","title":"Ursa Major FMC Flatfield Eyepiece 15.5mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 15.5mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014082916463,"sku":"ursamajor_fmc_ff_ep_15.5mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff_ep_15.5mm_10__50099.jpg?v=1766570325"},{"product_id":"ursa-major-fmc-flatfield-eyepiece-19mm","title":"Ursa Major FMC Flatfield Eyepiece 19mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 19mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014082981999,"sku":"ursamajor_fmc_ff_ep_19mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff_ep_19mm_13__42021.jpg?v=1766570332"},{"product_id":"ursa-major-fmc-flatfield-eyepiece-25mm","title":"Ursa Major FMC Flatfield Eyepiece 25mm","description":"\u003ch2\u003eUrsa Major FMC Flatfield Eyepiece 25mm\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe src=\"https:\/\/astronomy.tools\/calculators\/embedded_field_of_view\/?fov[]=20100|3600|||1||\u0026amp;fov[]=20100|3599|||1||\u0026amp;fov[]=20100|3598|||1||\u0026amp;fov[]=20100|3597|||1||\u0026amp;fov[]=20100|3596|||1||\u0026amp;fov[]=20100|3595|||1||\u0026amp;fov[]=20100|3594|||1||\u0026amp;messier=31\u0026amp;quick_select=telescope\" width=\"640\" height=\"950\" data-mce-fragment=\"1\"\u003e\u003c\/iframe\u003e\u003ca id=\"specifications\" name=\"specifications\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv id=\"product_specifications\"\u003e \u003c\/div\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014083506287,"sku":"ursamajor_fmc_ff_ep_25mm","price":75.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/ursamajor_fmc_ff-ep_25mm_1__30381.jpg?v=1766570337"},{"product_id":"ursa-major-high-mag-eyepiece-set","title":"Ursa Major High Mag Eyepiece Set","description":"\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA High magnification upgrade for your telescope. Enjoy a wide field of view, and greater magnification.  Excellent for \u003cstrong\u003eDobsonian\u003c\/strong\u003e Telescopes\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit includes 3.5mm, 5.5mm and 7.5mm\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFocal Length\u003c\/td\u003e\n\u003ctd\u003eLens Elements\/Structure \u003c\/td\u003e\n\u003ctd\u003eApparent Field of View \u003c\/td\u003e\n\u003ctd\u003eEye Relief\u003c\/td\u003e\n\u003ctd\u003eBarrel \u003c\/td\u003e\n\u003ctd\u003eCoatings \u003c\/td\u003e\n\u003ctd\u003eFilter Thread \u003c\/td\u003e\n\u003ctd\u003eField Stop Diameter  \u003c\/td\u003e\n\u003ctd\u003e\n\u003cp class=\"both\"\u003eEye Cup \u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3.5mm\u003c\/td\u003e\n\u003ctd\u003e6\/4\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003ctd\u003e15mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e3.9mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5.5mm\u003c\/td\u003e\n\u003ctd\u003e6\/4\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e6.4mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e7.5mm\u003c\/td\u003e\n\u003ctd\u003e6\/4\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"       \u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e8.6mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014094483567,"sku":"UM-HM","price":194.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Ursa_Major_Eyepiece_high_mag_set__79195.png?v=1766570857"},{"product_id":"ursa-major-observers-eyepiece-set","title":"Ursa Major Observers Eyepiece Set","description":"\u003cp\u003e\u003cstrong\u003eAn excellent alternative to regular Plossl or Orthoscopic eyepieces. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eA High magnification upgrade for your telescope. Enjoy a wide field of view, and greater magnification.  Excellent for \u003cstrong\u003eDobsonian\u003c\/strong\u003e Telescopes\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKit includes 7.5mm, 10.5mm, 15.5mm, and 19mm.  Add the 25mm for the Super Set!\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eUrsa Major FMC Flatfield eyepieces have a five to six-element optical design that provides surprisingly high performance, generous eye relief and a wide apparent field of view from 60 to 65 degrees, depending on the focal length. \u003c\/p\u003e\n\u003cp\u003eTheir Flatfield design with fully multicoated, edge-blackened optics reduces field curvature and enhances brightness and contrast. \u003c\/p\u003e\n\u003cp\u003eThe black-anodised 1.25\" nosepiece has a safety taper (for a secure fit in the focuser) and is threaded to accept 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cp\u003eEach Ursa Major FMC Flatfield eyepiece is beautifully finished with a tactile grip and a fold-down rubber eye cup for comfortable viewing.\u003c\/p\u003e\n\u003cp\u003eSupplied with a lens cleaning cloth and an eyepiece bag. \u003c\/p\u003e\n\u003ctable border=\"1\" cellspacing=\"1\" cellpadding=\"1\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e7.5mm\u003c\/td\u003e\n\u003ctd\u003e6\/4\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"       \u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e8.6mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e10.5mm \u003c\/td\u003e\n\u003ctd\u003e5\/4\u003c\/td\u003e\n\u003ctd\u003e60°\u003c\/td\u003e\n\u003ctd\u003e16mm \u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e11.7mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e15.5mm\u003c\/td\u003e\n\u003ctd\u003e5\/3\u003c\/td\u003e\n\u003ctd\u003e65°\u003c\/td\u003e\n\u003ctd\u003e16mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e17.4mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e19mm\u003c\/td\u003e\n\u003ctd\u003e5\/3\u003c\/td\u003e\n\u003ctd\u003e65°\u003c\/td\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e20.3mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e25mm\u003c\/td\u003e\n\u003ctd\u003e5\/3\u003c\/td\u003e\n\u003ctd\u003e65°\u003c\/td\u003e\n\u003ctd\u003e23mm\u003c\/td\u003e\n\u003ctd\u003e1.25\"\u003c\/td\u003e\n\u003ctd\u003eFully Multi Coated\u003c\/td\u003e\n\u003ctd\u003eM28.5X0.6-3.9\u003c\/td\u003e\n\u003ctd\u003e25.9mm\u003c\/td\u003e\n\u003ctd\u003eFold Down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Ursa Major","offers":[{"title":"Default Title","offer_id":44014094745711,"sku":"UM-OS","price":245.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0686\/0049\/6239\/files\/Ursa_Major_Eyepiece_Observers_set__02171.png?v=1766570863"},{"product_id":"ursa-major-7-21mm-fmc-zoom-eyepiece","title":"Ursa Major 7-21mm FMC Zoom Eyepiece","description":"\u003ch2\u003eUrsa Major 7-21mm 1.25\" FMC Zoom Eyepiece\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eAn excellent value Zoom eyepiece and a useful upgrade to regular eyepieces included with many beginner telescopes. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eZoom eyepieces enable you to change the level of magnification simply by twisting the sleeve, so there is no need to swap between multiple eyepieces. \u003c\/p\u003e\n\u003cp\u003eThe eyepiece focal lengths are parfocal across the zoom range, so little or no focus adjustment is required when changing magnifications. \u003c\/p\u003e\n\u003cp\u003eLong 16.3-18mm eye-relief, so suitable for use with eyeglasses. \u003c\/p\u003e\n\u003cp\u003eA fold-up eye-cup helps you find the correct eye position and protects against stray light. \u003c\/p\u003e\n\u003cp\u003eOther features include an anodised aluminium body with a tactile grip and a recessed 1.25\" nosepiece that is threaded for 1.25\" astronomy filters. \u003c\/p\u003e\n\u003cdiv class=\"product_features\"\u003e\n\u003cul\u003e\n\u003cli\u003e7-21mm Zoom Eyepiece\u003c\/li\u003e\n\u003cli\u003e6 element \/ 4 group design\u003c\/li\u003e\n\u003cli\u003e40-57º Field of View\u003c\/li\u003e\n\u003cli\u003e16.3mm-18mm Eye Relief\u003c\/li\u003e\n\u003cli\u003eFully multicoated optics\u003c\/li\u003e\n\u003cli\u003eBlackened lens edges\u003c\/li\u003e\n\u003cli\u003eCNC machined aluminium body\u003c\/li\u003e\n\u003cli\u003eTactile rubber grip\u003c\/li\u003e\n\u003cli\u003eRecessed nosepiece to prevent slippage\u003c\/li\u003e\n\u003cli\u003eFold-up rubber eye-cups\u003c\/li\u003e\n\u003cli\u003e1.25\" nosepiece\u003c\/li\u003e\n\u003cli\u003eThreaded for 1.25\" astronomy filters\u003c\/li\u003e\n\u003cli\u003eWeight ~133g\u003c\/li\u003e\n\u003cli\u003eHeight 93 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003ch2\u003eEyepiece Field of View Simulator\u003c\/h2\u003e\n\u003cp\u003e\u003ciframe 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