{"product_id":"bettys-secondary-mirror-holder","title":"Betty's Secondary Mirror Holder","description":"\u003cp\u003eUpdated design\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eFar easier to adjust than traditional secondary holders\u003c\/li\u003e\n\u003cli\u003ePerfect positioning of the secondary mirror\u003c\/li\u003e\n\u003cli\u003ePerfect secondary mirror offset\u003c\/li\u003e\n\u003cli\u003eDesigned to carry secondary mirrors with a 50-80mm width.\u003c\/li\u003e\n\u003cli\u003eWorks with almost all Newtonians (just need an M6 or M5 central bolt in your spider)\u003c\/li\u003e\n\u003cli\u003e25 micron accurate engineering\u003c\/li\u003e\n\u003cli\u003e30 day Full Refund returns policy\u003c\/li\u003e\n\u003cli\u003eWatch how to install \u003ca href=\"https:\/\/youtu.be\/1YAgycPoUWA\" target=\"_blank\"\u003evideo\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSee the benefits \u003ca href=\"https:\/\/youtu.be\/x9d4YeeUFsU\" target=\"_blank\"\u003evideo\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eSee the parts machined \u003ca href=\"https:\/\/youtu.be\/ms5gErdFT-o?si=epGIJHQjWxsR8Oiy\u0026amp;t=481\" target=\"_blank\"\u003evideo\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eBetty's Secondary Mirror Holder fits onto the spider of your Newtonian telescope and provides very accurate and fast collimation of your secondary mirror. This mirror holder also comes with a jig and a clever scale which with the aid of a laser collimator (not provided) allows you to place the secondary mirror in the correct position under the focuser.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eV2 improvements include:\u003c\/strong\u003e stiffer mirror sticking pad, spring tension adjustment and mirrored tightening bolts which when turned in tandem prevent the veins bending when tightening the holder onto the spigot.\u003c\/p\u003e\u003cp\u003ePlease contact us if you have questions: \u003ca href=\"mailto:support@vertexcommerce.co.uk\"\u003esupport@vertexcommerce.co.uk\u003c\/a\u003e\u003c\/p\u003e\u003cp\u003eIf you have questions about Newtonian Collimation please watch this \u003ca href=\"https:\/\/youtu.be\/KkX_MHpqozE\" target=\"_blank\"\u003evideo\u003c\/a\u003e which runs through basic collimation and why you need to do it.\u003c\/p\u003e","brand":"Astrobiscuit","offers":[{"title":"F4 \/ M5","offer_id":53676543279437,"sku":null,"price":129.0,"currency_code":"GBP","in_stock":true},{"title":"F4 \/ M6","offer_id":53676543312205,"sku":null,"price":129.0,"currency_code":"GBP","in_stock":true},{"title":"F5 \/ M5","offer_id":53676543344973,"sku":null,"price":129.0,"currency_code":"GBP","in_stock":true},{"title":"F5 \/ M6","offer_id":53676543377741,"sku":null,"price":129.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0950\/1976\/1997\/files\/adjustment_knobs.jpg?v=1775596898","url":"https:\/\/vertexcommerce.co.uk\/products\/bettys-secondary-mirror-holder","provider":"Vertex Commerce","version":"1.0","type":"link"}