|
|
Antares F/6.3 SCT Focal Reducer
-
The Antares f/6.3 SCT Focal Reducer will widen the field of view on your SCT or Mak.
- For visual or photographic use, "converts" f/10 focal ratios to f/6.3.
- The Antares f/6.3 SCT Focal Reducer is four element, fully multi-coated for quality images with good contrast.
- Screws onto the rear cell of your Schmidt- or Maksutov-Cassegrain telescope.
|
Antares f/6.3 SCT Focal Reducer
Focal reducers are very versatile accessories. More powerful focal reducers are limited to photographic use, but the f/6.3 reducer works well visually or photographically. When used visually, they extend the field of view. Eyepieces used with a focal reducer yield lower-power views. Photographically, a focal reducer shortens your exposure time by allowing more light to reach the film or sensor.
This focal reducer is made to attach to the rear cell of Schmidt-Cassegrain or Maksutov-Cassegrain telescopes. Optically, it consists of a four-element lens that is fully multi-coated for high contrast and resolution.
Antares Product Number: SCTFR
User Reviews
|
 |
Review Date: 10/30/2008
Reviewed By: Mike Weasner
|
Antares vs Meade comparison
I recently had the opportunity to compare the Antares f/6.3 SCT Reducer/Corrector with the Meade f/6.3 Series 4000 Focal Reducer/Field Flattener.
The Antares focal reducer comes in a small box. Unlike the Meade f/6.3 Series 4000 Focal Reducer/Field Flattener, the Antares has only one cover, which surprised me. You attach the focal reducer to the rear port on a SCT and can keep it covered. But when not in the box or on the telescope, there is no cover for the other end. I wish there was.
With a 2000mm focal length f/10 telescope like a 8 SC or 8 ACF, both the Antares reducer and the Meade reducer should yield a 1260mm focal length f/6.3 telescope. This makes the telescope a faster system with a wider field-of-view and brighter objects, requiring shorter exposure times when doing astrophotography.
Unlike a problem I had with the Meade focal reducer, I had no problems f... |
| | Click here to read all reviews |
|
|
|
