{"product_id":"zwo-efw-7x2","title":"ZWO EFW-7x2","description":"\u003csection id=\"shopify-section-template--16576090046526__custom_liquid_BRhNFB\" class=\"shopify-section spaced-section\"\u003e\n\u003cdiv\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full is-resized\"\u003e\u003cimg class=\"wp-image-2430\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/7557b4d3cfa16b1dfdb18d33200b11cc.jpg\" alt=\"ZWO_EFW\" width=\"800\" height=\"800\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe filter wheel body is CNC milled from an aircraft graded aluminum block.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eExcellent craftsmanship, very thin and light with only 20mm thickness.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe core part of our EFW is the stepper motor which has reliable performance and quality that comes from NPM, Japan.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e 2″ Thread-In Filters or\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e50.4mm ±0.5mm Unmounted Filters can be used \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe 2” Electronic Filter Wheel can be rotated in both counter clockwise and clockwise direction for filter selection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg class=\"wp-image-2449\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/65f7b41c1d7a74559095173b7d74ab84-1.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThere is no need of multiple cables to power this wheel up, just one USB cable does the trick. The maximum power supply of this EFW is approximately 120mAh @ 5V, which can be operated from the Cooled CCD’s USB2.0 port.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen connected to ASI6200, the distance from the filter to the sensor is about 18mm\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOur 2″ RGBL filters are recommended to work with ASI6200MM Pro camera, it will offer nearly 1:1:1 RGB color balance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eBelow requirements must be met while using the 2” filter from third-party.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg class=\"wp-image-2436\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/c3c52c75db09622db7866d40f397b03c.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eFilters (not including the threads) must be less than 7.5mm in thickness and less than 50.8mm in diameter. Threads must be less than 2.7mm in thickness.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003e\u003cb\u003eHow to install the darkening sets: \u003c\/b\u003e\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cimg class=\"aligncenter size-full wp-image-67385\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/07211b93a01b6b4034fdd028fc76622e.png\" alt=\"\" width=\"1200\" height=\"700\"\u003e\u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg class=\"wp-image-2435\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/ec9dddd41a7465deebe7048810d394ff.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color\"\u003eUsage guide:\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e5 connection methods of ASI6200 to get 55mm back focus length:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color\"\u003eQ \u0026amp; A\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e1. My EFW tries to move but gets stuck and cannot arrive at the right position.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e1) Filter is too thick: Filters (not including the threads) must be less than 7mm in thickness and threadsmust be less than 3mm in thickness.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e2) The M2 screw used to secure the filter is too long and causes the wheel to jam.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e3) The M42 thread of the scope or the camera is too long and protrudes into the filter wheel, hitting the filter or wheel, causing it to jam.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e2. My EFW spins but never stops, or stops at the wrong position.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eZWO EFW uses an infrared sensor to check wheel position.  If the sensor malfunctions, you can usually resolve by recalibrating the EFW in the ASCOM driver. Simply click “ReCalibrate” in ASCOM driver interface. It can take up to 60 seconds to perform this action.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg class=\"wp-image-2428\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/b58010b4b6bb70f769c6d118d6f2b46d.png\" alt=\"\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e3. I use 7-position EFW, normally I had slots 1, 2, 3, 4 filled and slots 5, 6, 7 empty, but then I got the error below and the EFW stopped working. I checked the carousel. It was not too tight or loose.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"wp-block-image aligncenter size-full\"\u003e\u003cimg class=\"wp-image-2429\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/bc382ec8ef7b0c4a8edbb199eca738d9.jpg\" alt=\"\"\u003e\u003c\/figure\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eWhen using the filter wheel it is very important to keep its internal balance. The weight and distribution of the filters will affect balance. Thus we recommend you space the filters out and evenly distribute them. In this case, install them in slots 1, 3, 5 and 7, then the EFW will work again.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eProduct weight: 650g\u003c\/p\u003e\n\u003cp\u003ePower supply: USB2.0\u003c\/p\u003e\n\u003cp\u003eControl Mode: ASCOM and SDK\u003c\/p\u003e\n\u003cp\u003eDriver: Free of driver\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eWhat’s in the box?\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e1. EFW2*5 or FW2*7 body\u003cbr\u003e2. USB2.0 – 2m cable\u003cbr\u003e3. A bag of M2.5*6 screws (6pcs\/ bag)\u003cbr\u003e4. A bag of filter masks for 50mm filters (7pcs\/ bag)\u003cbr\u003e5. Phillips screwdriver\u003cbr\u003e6. A bag of M2*4 flat screws (23pcs\/ bag)\u003cbr\u003e7. M54M-M48F adapter\u003cbr\u003e8. M54M-M42F adapter\u003cbr\u003e9. Darkening ring sets(4pcs)\u003c\/p\u003e\n\u003ch4\u003eSpecifications for the darkening sets:\u003c\/h4\u003e\n\u003cp\u003eExternal diameter: 88mm. Inner diameter: 55mm (2pcs) \u0026amp; 58mm (2pcs). Thickness: ≤0.2. 4pcs in total.\u003cbr\u003e*The reason for including the darkening sets is to help solve the light leaking issue occurring in the gap of the filter wheel and camera.\u003cimg class=\"aligncenter size-full wp-image-67383\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/db4b0ea83c0e8be7f75dce12cecbb5e1.png\" alt=\"\" width=\"1200\" height=\"465\"\u003e\u003cimg class=\"aligncenter size-full wp-image-67384\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/e2d9ba67802f09b43d93d65ec8115a50.png\" alt=\"\" width=\"1200\" height=\"465\"\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"has-vivid-red-color has-text-color\"\u003eMechanical drawing\u003c\/h3\u003e\n\u003cimg class=\"wp-image-2435\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0588\/0817\/2606\/files\/ec9dddd41a7465deebe7048810d394ff.jpg\" alt=\"\"\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":50769587077408,"sku":"ZWO EFW-7x2","price":399.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/2135\/2480\/files\/74e354909527448e5fa7c889be2c6cdf_720x_ac04e2b4-e3bc-4821-8e66-ad87704ad684.webp?v=1760089687","url":"https:\/\/firstlightastro.com\/products\/zwo-efw-7x2","provider":"First Light Astro","version":"1.0","type":"link"}