Antares focal reducer review. It is actually only a reducer, but it does increase true field at the expense of some increase in spherical aberration and some vignetting (dimming) at the edge of the field. This filter threads on to the rear cell of your Celestron or Meade SCT telescope. 5x focal reducer screws directly to the 2 inch filter threads found on eyepieces, camera Focal reducers can be used either visually or photographically to decrease focal length and increase true field at the expense of some vignetting (dimming) at the edge of the field. The field flattener and focal reducer from Antares increases the light intensity: the aperture ratio of f/10 typical for SC telescopes is reduced to f/6. However, fainter DSOs that require extreme stretching, large integration times and faint nebulosity may be tougher to deal with, although not as much as I previously thought. 5x 2" Focal Reducer Focal reducers can be used either visually or photographically to decrease focal length and increase true field at the expense of some vignetting (dimming) at the edge of the field. Oct 11, 2008 · With a 2000mm focal length f/10 telescope like a 8" SC or 8" ACF, both the Antares reducer and the Meade reducer yield a 1260mm focal length f/6. Antares FR1 is a fully multicoated 25 The Antares FR2-0. 3 4-element fully multicoated reducer/corrector used on F/10 Schmidt-Cassegrain telescopes. This means that the required exposure time is reduced by approximately 40%! reduces the focal length and thus increases the field of view. 3 Reducer Corrector" The other focal reducer at low cost that some people like is the Antares focal reducer: "Antares Focal Reducer" This one tends to have a bit better focus range, but I have seen negative comments on it as well. It is a high quality optical accessory that will provide excellent views and amazing astrophotographs of many objects when used with an appropriate telescope. 7X, but the exact reduction factor depends on the lens positioning between the objective and image plane. It threads onto the rear cell of 5" to 16" Celestron and Meade Schmidt-Cassegrain telescopes, making it possible to have a dual focal ratio instrument without sacrificing image quality. 5x. Use of this focal reducer effectively halves the focal ratio of your telescope, resulting in a wider field of view and significantly shortened exposure times for astrophotography This superb fully multi-coated double-element focal reducer takes advantage of the latest computer aided design techniques to achieve the highest standards of performance to dramatically increase the field of view (FOV) or imaging scale of your telescope regardless of brand or type. This is one of our best-selling items, and customers have reported that this product is at least as good as, and probably better than, other leading f/6. This makes the telescope a "faster" system with a wider field of view and brighter objects, requiring shorter exposure times when doing astrophotography. The Antares SCTFR is the standard thread-on F/6. This focal reducer and field flattener consists of a four-element multicoated 40mm lens in a metal cell. 3 lens system used for f/10 Schmidt-Cassegrain telescopes but in a 2" barrel threaded for standard filters. Oct 28, 2008 · I am very pleased with the Antares focal reducer. Antares 2" 0. "Celestron f/6. ) that accepts standard 2" threaded filters and provides a nominal reduction of 0. Antares' f/6. It is recommended for increasing true field in telescope with f/ratios of f/10 or higher. The Antares 2 inch 0. In practice, it's important to remember that you will rarely operate at the exact working distance and at the exact reduction factor that is specified. A slight nod to the Antares for heft and higher transmission, but points to the Celestron for nice threads and better contrast. Jan 6, 2020 · This focal reducer is great for visual usage, bright solar system targets, and brighter DSOs. However, this seems to be a fan favorite, and I would want to try it as well. 3. 3 focal reducer provides a faster f/6. 5x focal reducer screws on to any accessory (such as eyepieces, camera adapters, etc. 3 focal reducers sold on the market for a lot more. 3 telescope. The reduction depends on the spacing of the reducing lens between the objective and the image plane. . 3 system for imaging or visual use when used with an f/10 SCT or other compatible telescopes. Focal length reduction is around 0. Feb 29, 2016 · Unlike the Meade and Antares focal reducers I used in the past, which thread onto the SCT port, the Lepus fits a 2" visual back or focus drawtube. 7X is the same 4-element f/6. This makes for more versatility in telescope mounting, but also removes some security since the focal reducer and camera/imager are only held to the telescope by the visual back or drawtube setscrew Antares 0. 5x Focal Reducer Antares' 2" 0. cfayed wxwwwx cglojpnm hyikm xtb hdr daoc vkka apfq tulmtu