Celestron Illuminated RACI Finder Scope
The Celestron Illuminated RACI finder scope is a great upgrade to the stock finderscopes found on most Schmidt-Cassegrain telescopes. The 50mm optics produce bright, sharp images with a magnification of 9X and a generous 5º apparent field of view. Meanwhile, the right-angle, correct-image design keeps objects right-side up and left-to-right correct. You will enjoy the difference being able to locate objects and track in the wide field of view. The eyepiece module rotates left or right so you can find the perfect viewing angle.
Unlike a single cross hair eyepiece, the double-crosshair reticle won't obscure targets at the centre of your field. Whether you are aligning your computerized telescope or finding deep-sky objects on your own. The reticle focusses independently of the finder itself. A battery-powered illuminator lights up the crosshair with a soft, red glow, and the illumination can be easily adjusted by turning the on/off knob.
The Celestron 9x50 RACI Finder comes with a sturdy bracket consisting of two rings and an integrated dovetail. Adjusting the alignment of the finder is easy with the oversized thumbscrews. The dovetail allows for easy attachment to and removal from most Schmidt-Cassegrain and EdgeHD optical tube assemblies (including the NexStar and Evolution series) without affecting the alignment of the finderscope.
| Aperture | 50mm (1.97") |
| Magnification | 9x |
| Highest Useful Magnification | 118x |
| Lowest Useful Magnification | 7.14x |
| Limiting Stellar Magnitude | 11 |
| Resolution (Rayleigh) | 2.79 arc seconds |
| Resolution (Dawes) | 2.32 arc seconds |
| Light Gathering Power (Compared to human eye) | 51x |
| Apparent Field of View | 5° |
| Weight | 24 oz (680 g) |
| External Length | 191mm (7.5") |
| External Height | 140mm (5.5") |