Details
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Information:
The Series 4000 CCD focal reducer converts the optical systems of f/10 STCs to f/3.3; or f/6.3 SCTs to f/2; f8 RCX's to f2.6 for ultra-fast CCD imaging with increased edge of field resolution and colour correction. It achieves this by reducing the telescope's focal ratio by a factor of 0.33 The 3-element; 41mm clear-aperture optics are multi-coated to maximise light transmission.
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Specifications:
Mounted in its threaded cell; the f/3.3 CCD focal reducer attaches to the rear cells of all SCTs with standard threads. e.g Meade LX200; Celestron Nexstar etc. The f/3.3 focal reducer reduces CCD exposure times by up to 80%. Each f/3.3 CCD Focal Reducer comes supplied with a variable T-adapter that allows a range of f/ratios between f/3 and f/5 on f/10 SCTs and between f/1.9 and f/3.2 on f/6.3 SCTs. The focal reducer may be used with CCD imagers of any brand and chip dimension but is not recommended for use in either visual use or photographic imaging applications. Brand new in bolt-style case. |
Additional Information
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