Celestron SkyMaster 20x80 specs and field of view
The SkyMaster 20x80 weighs 75 oz and gives a calculated twilight factor of 40, built for the night sky, with a view of 195 ft.
- Field of view
- 195 ftat 1,000 yd
- Eye relief
- 18 mm
- Close focus
- 108 ft
- Weight
- 75 oz
- Exit pupil
- 4 mmcalculated
Why pick it
- Widest view of the 4: 195 ft
- 75 oz, lighter than the typical 80.7 oz
- Longest eye relief of the 4: 18 mm
Binocular Chart earns a commission from qualifying Amazon purchases made through these buttons.
Who the SkyMaster 20x80 suits
An 18 mm eye relief and a calculated 4 mm exit pupil suit eyeglass wearers on a tripod. Porro prisms and tripod adaptability make it a mounted astronomy choice.
The close focus of 108 ft and the heavy build rule out handheld use, and the body is water resistant, not waterproof.
SkyMaster 20x80 is one choice among many, and the top binoculars compared covers the most popular ones. Celestron lists it in the $200 to $500 price band, alongside the models in best binoculars under $500.
SkyMaster 20x80 specifications
SkyMaster 20x80 figures as Celestron prints them; rows marked * are calculated from the 20x80 size.
| Magnification | 20x |
|---|---|
| Objective lens | 80 mm |
| Prism type | Porro |
| Field of view | 195 ft at 1,000 yd (65 m at 1,000 m) |
| Angular field of view | 3.7° |
| Apparent field of view | 74° * |
| Eye relief | 18 mm |
| Close focus | 108 ft (33 m) |
| Eye spacing range | 56 to 72 mm |
| Weight | 75 oz (2,126 g) |
| Waterproofing | Water Resistant |
| Tripod adaptable | Yes |
| Maker list price | $200 to $500 |
| Exit pupil | 4 mm * |
| Twilight factor | 40 * |
| Relative brightness | 16 * |
* Calculated from the size, not printed by the maker.
SkyMaster 20x80 against other 20x80 binoculars
SkyMaster 20x80 shows 195 ft at 1,000 yd, at or above the 173 ft median of the 4 20x80 models in the chart. At 75 oz it is at or under the 80.7 oz median weight for the size.
SkyMaster 20x80 and its nearest rivals
SkyMaster 20x80 next to the 20x80 models closest to it in maker list price, with the best figure in each column in bold.
| Model | Field of view | Eye relief | Close focus | Weight | Exit pupil | Maker list price | Amazon |
|---|---|---|---|---|---|---|---|
| Celestron SkyMaster 20x80 | 195 ft | 18 mm | 108 ft | 75 oz | 4 mm | $200 to $500 | Check price on Amazon |
| Celestron SkyMaster Pro 20x80 | 168 ft | 15.5 mm | 66.2 ft | 86.4 oz | 4 mm | $200 to $500 | Check price on Amazon |
| Celestron SkyMaster Pro ED 20x80 | 178 ft | 15.4 mm | 98.4 ft | 123.2 oz | 4 mm | $200 to $500 | Check price on Amazon |
| Steiner M2080 | 160 ft | 197 ft | 68.1 oz | 4 mm | over $2,000 |
Other sizes of the SkyMaster
Celestron makes the SkyMaster in 5 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.
| Model | Size | Field of view | Eye relief | Close focus | Weight | Exit pupil | Amazon |
|---|---|---|---|---|---|---|---|
| Celestron SkyMaster 20x80 | 20x80 | 195 ft | 18 mm | 108 ft | 75 oz | 4 mm | Check price on Amazon |
| Celestron SkyMaster 12x60 | 12x60 | 278 ft | 17 mm | 59 ft | 39.2 oz | 5 mm | Check price on Amazon |
| Celestron SkyMaster 15x70 | 15x70 | 231 ft | 18 mm | 43 ft | 48 oz | 4.7 mm | Check price on Amazon |
| Celestron SkyMaster 25x70 | 25x70 | 141 ft | 13 mm | 75 ft | 52 oz | 2.8 mm | Check price on Amazon |
| Celestron SkyMaster 25x100 | 25x100 | 156 ft | 15 mm | 80 ft | 140 oz | 4 mm | Check price on Amazon |
Lists that include the SkyMaster 20x80
Celestron binoculars
SkyMaster 20x80 questions
SkyMaster 20x80: does it work with glasses?
SkyMaster 20x80 has 18 mm of eye relief, which meets the 16 mm the RSPB advises for people who wear glasses.
SkyMaster 20x80: what does 20x80 mean?
SkyMaster 20x80 magnifies 20 times through 80 mm front lenses, which works out to an exit pupil of 4 mm, the width of the beam of light that reaches each eye.
SkyMaster 20x80: can it go on a tripod?
SkyMaster 20x80 is tripod adaptable according to Celestron, so it accepts a binocular tripod adapter.