{"product_id":"zwo-ff131-131mm-f-7-5-apo-flat-field-apochromatic-refractor-lightweight-astronomical-telescope","title":"ZWO FF131 131MM F\/7.5 APO Flat Field Apochromatic Refractor Lightweight Astronomical Telescope","description":"\u003cp\u003e\u003cb\u003eSpecifications:\u003c\/b\u003e\u003cbr\u003e- Product Name: FF131 APO\u003cbr\u003e- Effective Aperture: 131mm\u003cbr\u003e- Focal Length: 983mm\u003cbr\u003e- Focal Ratio: f\/7.5\u003cbr\u003e- Objective Type: Four-element air-spaced APO (includes 1 ED element)\u003cbr\u003e- Image Circle: 44mm\u003cbr\u003e- Maximum Rear Connection Length (Focuser Retracted)\u003cbr\u003e  Imaging Mode: 73mm (measured from M48x0.75 male thread); 91mm (measured from M54x0.75 male thread)\u003cbr\u003e  Observation Mode: 131mm (measured from 1.25” eyepiece holder); 142mm (measured from 2” eyepiece holder)\u003cbr\u003e- Minimum Rear Connection Length (Focuser Retracted)\u003cbr\u003e  Imaging Mode: 42mm (measured from M48x0.75 male thread); 60mm (measured from M54x0.75 male thread)\u003cbr\u003e  Observation Mode: 100mm (measured from 1.25” eyepiece holder); 111mm (measured from 2” eyepiece holder)\u003cbr\u003e- Overall Length: 878mm (with 1.25” interface retracted); 941mm (with photography extension tube retracted); 963mm (with 1.25” interface extended); 1026mm (with photography extension tube extended)\u003cbr\u003e- Telescope Body Weight: 7.9kg\u003cbr\u003e- Standard Configuration Weight: 9.4kg (including handle, mounting rings, and dovetail plate)\u003cbr\u003e- Rear Interfaces:\u003cbr\u003e  M78x1- 55mm Extension Adapter\u003cbr\u003e  M78x1 - M54x0.75\u003cbr\u003e  M54x0.75 - M54x0.75\u003cbr\u003e  M54x0.75 - M48x0.75 (built-in M48x0.75 filter thread)\u003cbr\u003e\u003cb\u003e\u003cbr\u003ePackage Included:\u003c\/b\u003e\u003cbr\u003e- 1 x Set of FF131 APO\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-01.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-02.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-03.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-04.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-05.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-06.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-07.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-08.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-09.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-10.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-11.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-12.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-13.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-14.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-15.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-16.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103889\/103889-17.jpg\"\u003e\u003c\/p\u003e\u003cp\u003e\u003cimg style=\"width: 1200px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/103886\/103886-17.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"TeSeek Official","offers":[{"title":"Default Title","offer_id":48129646919916,"sku":"103889","price":2878.7,"currency_code":"USD","in_stock":true}],"url":"https:\/\/teseek.com\/de\/products\/zwo-ff131-131mm-f-7-5-apo-flat-field-apochromatic-refractor-lightweight-astronomical-telescope","provider":"TeSeek Official","version":"1.0","type":"link"}