SVbony 0.5X Focal Reducer F9115A สำหรับอุปกรณ์กล้องดูดาว 1.25" มาตรฐาน
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SVbony 0.5x Focal Reducer F9154A สำหรับอุปกรณ์กล้องดูดาว 1.25" มาตรฐาน
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GSO 1.25" Focal Reducer / Corrector 0.5X สำหรับลด focal ratio ของกล้องดูดาว
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GSO 1.25" Focal Reducer / Corrector 0.5X รวม 25mm extension tube สำหรับลด focal ratio ของกล้องดูดาว
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GSO 2" Focal Reducer / Corrector 0.5X สำหรับลด focal ratio ของกล้องดูดาว
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Sky-Watcher ED50 Flattener for EvoGuide 50DX
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GSO 2" Coma Corrector สำหรับลด field curvature (แสงดาวเป็นวงรี) ของกล้องดูดาวแบบสะท้อน
กรุณาคลิกที่ภาพตัวอย่างด้านบนเพื่อขยายดูรายละเอียดของสินค้า |
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GSO 2" Focal Reducer 0.75X สำหรับลด focal ratio ของกล้องดูดาวแบบ Ritchey-Chretien
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Askar 65PHQ 0.75× Full-Frame ReducerAskar’ s new-launched 65PHQ 0.75× full-frame reducer has a quadruplet design. The 0.75× reduction gives 65PHQ a shortened focal ratio of f/4.8 and a shortened focal length of 312mm. This reducer, connected with the astrograph, can effectively shorten the exposure time and dramatically increase your field of view, bringing more convenience and possibilities for your deep-sky astrophotography. The backfocus is the standard 55mm. It comes with two thread adapters of M54, M48 with a built-in M48×0.75 2” filter thread, so it is convenient for connection. |
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Sharpstar 2" Triplet 0.95x Reducer / Coma Corrector for f/3-f/6 Newtonian Reflectors with M48 ThreadSharpstar 2" 0.95× coma corrector can be applied to most marketable Newtonian reflective astrographs. It’s of high quality and easy to use. Sharpstar 2" 0.95× coma corrector is designed for APS-C imaging circles(28mm), suitable for Newtonian reflectors with focal ratio between f/3 and f/6, and aperture size from 150mm to 600mm. The reduction factor is 0.95×, thus it can reduce the original f/4, f/5 and f/6 respectively to f/3.8, f/4.75 and f/5.7, effectively shortening the exposure time. Besides, it can improve the star shapes. The diameter of stars in the center of the field can be limited within 10um. |
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Sharpstar 61EDPHIII f/4.4 Full-Frame ReducerThe special full-frame reducer of 61EDPH Ⅲ: One end of the thread is M68 × 1, connected to the focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread. The back focus is 55mm. If it needs to be extended, the adapter can be screwed down to reveal the M54 × 0.75 male thread, and the back focus becomes 75mm. The focuser adopts a quadruplet air-spaced structure, supporting full-frame imaging. With the reducer, the focal ratio of 61EDPHⅢ is reduced to F4.4 and the focal length is reduced to 270mm, making the telescope the first choice for deep sky astrophotography. |
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Sharpstar 61EDPHIII Full-Frame FlattenerThe flattener: One end of the thread is M68 × 1, connected to the focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread. The back focus is 55mm. If it needs to be extended, the adapter can be screwed down to reveal the M54 × 0.75 male thread, and the back focus becomes 81.5mm. The flattener adopts a triplet air-spaced structure, the peripheral light reduction control is excellent, can effectively improve the curvature of the field, improve the corner image quality, and reduce aberrations, so that users can take clearer astronomical photos. |
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ZWO FF65 APO 0.75× Full Frame ReducerZWO has released a brand-new FF65APO 0.75× full frame reducer with a four-element optical design. It has a reduction factor of 0.75x, which gives the FF65APO f/6.4 astrograph a shortened focal ratio of f/4.8 and a shorter focal length of 312mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep sky imaging. The back focus distance is the standard 55mm. It also comes with two thread adapters of M54 and M48, and a built-in M48x0.75 2” filter thread, which makes the connection work simple and convenient.
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Sharpstar 0.8x Reducer/Flattener (support Full Frame) for 76EDPHThe Sharpstar 76EDPH F/4.5 is the latest development in dedicated full-frame focal reducers. Designed to work with the Sharpstar 76EDPH apochromatic refractor, this 0.8x reducer and flattener meets the needs of demanding astrophotographers who use cameras with up to full-frame sensors for wide-field deep-sky imaging. |
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Sky-Watcher 0.85x Reducer/Flattener for EvoStar 72ED
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Askar 0.7x Full-Frame 2.5" Reducer f/3.9 for Askar FRA400 72mm & FRA500 90mm Telescopes Askar provides a brand-new F3.9 full frame reducer for FRA400 astrograph, further reducing the focal length and thus shortening the exposure time on its original 400 focal length and f/5.6 focal ratio design basis. The reduction factor is 0.7×, and the reduced focal length is 280mm, which can satisfy most deep-sky astrophotography. The back focus is standard 55mm. The reducer has built-in M48×0.75 thread, easy for the attachment of 2" filters. |
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FF80APO 0.76X Full Frame ReducerZWO has released a new 3-inch FF80APO 0.76X full frame reducer with a three-element optical design, including one element made of ED glass. Its reduction factor is 0.76x, which gives the FF80APO f/7.5 astrograph a shortened focal ratio of f/5.7 and a shorter focal length of 312mm. This allows for less total integration time and a wider field of view, bringing more convenience and possibilities for your wide-field deep sky imaging. The reducer has a rear interface that attaches to the FF80APO telescope tube’s included four-segment camera extension tube. The back focus is the standard 55mm, and it has a built-in M48X0.75 2-inch filter thread for easy attachment. |
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Askar 0.76x Full-Frame 3" Reducer f/5.7 for Askar 80PHQ TelescopesThe Askar new 3 inch 0.76x full frame reducer,with a triplet design and specifically for the 80PHQ, offers a 0.76x reduction in focal ratio. |
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Sharpstar 2" Quaduplet 1x MPCC Coma Corrector for f/3-f/6 Newtonian Reflectors with M48 ThreadFollowing the advent of 0.95x coma corrector for Newtonian reflector, SHARPSTAR optics has well received the favor of customers with high praise. A new 1x full-frame coma corrector is now available to meet the needs of different market segments. Optimized for the aberration correction, it adopts a new Quadruplet air-spaced design, which includes an extra-low dispersion lens, same as the 0.95x, it features 2" with 55mm focal length, which is very convenient and simple to connect your imaging equipment. |
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