Details
Highest Levels of Contrast, Color Fidelity, and Sharpness
The Regal Fluoro ED APO Spotting Scopes are the finest ever offered by Celestron! The APO optical design combined with fully multi-coated glass elements ensure the highest levels of contrast, color fidelity, and sharpness.
Celestron’s Regal F-ED spotting scopes feature an air-spaced doublet, one element of which is made from the exotic mineral fluorite. The extra low dispersion from the fluorite provides excellent color correction and razor sharp images while virtually eliminating chromatic aberration. Day or night, Regal F-ED spotting scopes are optimized to provide the sharpest images available. You’ll love them for bird watching, nature observing, long distance viewing and casual astronomical observing. Because they are completely waterproof you can feel comfortable using them in extreme weather. The matte gray finish allows for subtle observation in any natural environment. Regal F-ED spotters are a great companion for any outdoor enthusiast.
The Regal Fluoro ED APO Spotting Scopes are the finest ever offered by Celestron! The APO optical design combined with fully multi-coated glass elements ensure the highest levels of contrast, color fidelity, and sharpness.
Celestron’s Regal F-ED spotting scopes feature an air-spaced doublet, one element of which is made from the exotic mineral fluorite. The extra low dispersion from the fluorite provides excellent color correction and razor sharp images while virtually eliminating chromatic aberration. Day or night, Regal F-ED spotting scopes are optimized to provide the sharpest images available. You’ll love them for bird watching, nature observing, long distance viewing and casual astronomical observing. Because they are completely waterproof you can feel comfortable using them in extreme weather. The matte gray finish allows for subtle observation in any natural environment. Regal F-ED spotters are a great companion for any outdoor enthusiast.
Additional Information
| Optical Design | Refractor |
|---|---|
| Aperture (mm) | 80 mm (3.15 in) |
| Focal Length (mm) | 480 mm (19 in) |
| Focal Ratio | 6 |
| Magnification 1 | 20x-60x |
| Highest Useful Magnification | 189 x |
| Lowest Useful Magnification | 11 x |
| Limiting Stellar Magnitude | 12 |
| Resolution (Rayleigh) | 1.74 arc seconds |
| Resolution (Dawes) | 1.45 arc seconds |
| Light Gathering Power | 131 x |
| Angular Field of View | 2.1°/ 1.0° |
| Linear Field of View (@1000 m) | 37 / 19 m (121 ft) |
| Linear Field of View (@1000 yds) | 112 / 56 |
| Eye Relief (mm) | 20 mm (0.79 in) |
| Near Focus | 20 ft (6.1 m) |
| Prisms | BaK-4 |
| Optical Tube Length | 17 in (432 mm) |
| Weight (oz) | 72 oz (2041 g) |
Instructional Videos
Knowledge Base
- My Celestron Ultima and Regal spotting scopes have threads in front of the objectives. What sizes of photo filters do they use?
- I have an old Celestron spotting scope and have lost the cover for the lens. The scope is 100mm and about 10 years old. How do I get a replacement cap?
- Can a Barlow lens be used with my Regal F-ED spotting scope?
- What eyepieces will work best with my Regal F-ED spotting scope? Will all eyepieces focus with the scope?
- Can eyepiece filters be used with the Regal spotting scopes?
- What is seeing? Does it affect terrestrial viewing? How does it affect my target spotting, bird watching and surveillance?
- I took the zoom eyepiece out of my Regal spotting scope and it won't take other eyepieces. Threads are preventing eyepieces from going in. What's wrong?
- Will the Regal spotting scope allow me to use NexImage in place of the eyepiece?
Regal F-ED Spotter Manual (English, French, German, Spanish, Italian) 
