{"product_id":"counterweight-for-1875-shaft-mach2-900-1100-1200-1600-also-mach1-using-optional-shaft","title":"Counterweight for 1.875\" Shaft - Mach2, 900, 1100, 1200 \u0026 1600 (also Mach1 using optional shaft)","description":"\u003cmeta charset=\"utf-8\"\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOur counterweights are precision machined from 303 stainless steel. The weights slip easily onto the counterweight shaft and are secured in position with a large hand knob\/brass pin assembly. The brass pin will not mar your shaft. Please note that that they no longer have a brass bushing. \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eKeep in mind that you can adjust the position of the weights to counterbalance varying loads. However, the addition of a guidescope, camera and other heavy accessories may necessitate an additional counterweight. If you plan to mount your Catadioptric, Newtonian or any other scope, figure that you will need a counterweight total equal to approximately 90-125% of the weight of your tube assembly and accessories (large diameter scopes require a higher percentage). The\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e1100GTO\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eand\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e1600GTO\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003emounts require slightly more weight than the older 900GTO and 1200GTO mounts.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eImportant Mount Balancing Note:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e Please read this document to understand the proper way to position counterweights when balancing your mount:\u003c\/span\u003e Balance to Optimize Guiding \u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eBelow are the nominal weights and dimensions of our counterweight line.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCounterweights for 1.875\" Diameter Shaft -\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eMach2, 900,\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e1100, 1200,\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e1600\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003emounts (and\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eMach1GTO\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eusing optional shaft):\u003cbr data-mce-fragment=\"1\"\u003eUse these dimensions to determine how many counterweights will fit on each shaft. Note that the diameter of the 24 lb. counterweight is larger than the others:\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e5 lb. (2.2 kg) Counterweight (5SCWT)\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e- diameter: 6\", thickness: 0.75\"\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e10 lb. (4.5 kg) Counterweight (10SCWT)\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e- diameter: 6\", thickness: 1.4\"\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e18 lb. (8.2 kg) Counterweight (18SCWT)\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e- diameter: 6\", thickness: 2.5\"\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003e30 lb. (13.6 kg) Counterweight (30SCWT188)\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e- diameter: 7.5\", thickness 2.5\"\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e900\/1100 Counterweight Shaft (M9404-B) - usable length 16.675\"\u003cbr data-mce-fragment=\"1\"\u003e1200\/1600 Counterweight Shaft (M12601-E) - usable length 22.0\"\u003cbr data-mce-fragment=\"1\"\u003e9.25\" x 1.875\" Counterweight Shaft Extension (M12675) - usable length 8.675\" \u003c\/p\u003e","brand":"Astro-Physics","offers":[{"title":"5 LB","offer_id":45451292278807,"sku":"czp1787930283687","price":108.9,"currency_code":"USD","in_stock":true},{"title":"10 LB","offer_id":45451292311575,"sku":"qpn1787930283688","price":137.35,"currency_code":"USD","in_stock":true},{"title":"18 LB","offer_id":45451292344343,"sku":"odp1787930283689","price":217.25,"currency_code":"USD","in_stock":true},{"title":"30","offer_id":45451292377111,"sku":"jnh1787930283690","price":368.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0750\/8931\/3815\/files\/counterweight-for-1875-shaft---mach2-900-1100-1200-1600-also-mach1-using-optiona_1.png?v=1787930288","url":"https:\/\/elviora.shop\/products\/counterweight-for-1875-shaft-mach2-900-1100-1200-1600-also-mach1-using-optional-shaft","provider":"My Store","version":"1.0","type":"link"}