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Celestron UpClose G2 8x21 specs and field of view

Weighing just 8 oz, the UpClose G2 8x21 carries a 378 ft field and a 10 ft close focus in a compact body.

Field of view
378 ftat 1,000 yd
Eye relief
11 mm
Close focus
10 ft
Weight
8 oz
Exit pupil
2.6 mmcalculated

Why pick it

  • 378 ft view, wider than the typical 354 ft
  • Longest eye relief of the 4: 11 mm
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UpClose G2 8x21: width of view at 1,000 yd.
UpClose G2 8x21: width of view at 1,000 yd.

Who the UpClose G2 8x21 suits

A shirt pocket carry at 8 oz suits travel and concerts in good light. The 58 to 72 mm eye spacing range is narrow, so check it against your own eyes.

A 2.6 mm exit pupil and 11 mm of eye relief limit dusk use and eyeglass comfort, and it is not tripod adaptable.

UpClose G2 8x21 is one choice among many, and the top binoculars compared covers the most popular ones. Celestron lists it in the under $100 price band, alongside the models in best binoculars under $100.

UpClose G2 8x21 specifications

UpClose G2 8x21 figures as Celestron prints them; rows marked * are calculated from the 8x21 size.

UpClose G2 8x21 specifications
Magnification8x
Objective lens21 mm
Prism typeRoof
Field of view378 ft at 1,000 yd (129 m at 1,000 m)
Angular field of view7.4°
Apparent field of view59° *
Eye relief11 mm
Close focus10 ft (3 m)
Eye spacing range58 to 72 mm
Weight8 oz (227 g)
WaterproofingWater Resistant
Tripod adaptableNo
Maker list priceunder $100
Exit pupil2.6 mm *
Twilight factor13 *
Relative brightness6.9 *

* Calculated from the size, not printed by the maker.

UpClose G2 8x21 against other 8x21 binoculars

UpClose G2 8x21 shows 378 ft at 1,000 yd, at or above the 354 ft median of the 4 8x21 models in the chart. At 8 oz it is heavier than the 7.4 oz median for the size.

8x21 binoculars by field of view at 1,000 yd, widest first, from the makers' figures.

UpClose G2 8x21 and its nearest rivals

UpClose G2 8x21 next to the 8x21 models closest to it in maker list price, with the best figure in each column in bold.

ModelField of viewEye reliefClose focusWeightExit pupilMaker list priceAmazon
Celestron UpClose G2 8x21 378 ft 11 mm 10 ft 8 oz 2.6 mm under $100 Check price on Amazon
Nikon Aculon T02 8x21 330 ft 10.3 mm 9.8 ft 6.9 oz 2.6 mm under $100 Check price on Amazon
Bushnell PowerView 2 8x21 Compact 378 ft 10 mm 21 ft 7.2 oz 2.6 mm Check price on Amazon
Nikon Aculon W10 8x21 330 ft 10.3 mm 9.8 ft 7.6 oz 2.6 mm Check price on Amazon

Other sizes of the UpClose G2

Celestron makes the UpClose G2 in 7 sizes; a larger front lens adds brightness and weight, and more magnification narrows the view.

ModelSizeField of viewEye reliefClose focusWeightExit pupilAmazon
Celestron UpClose G2 8x21 8x21 378 ft 11 mm 10 ft 8 oz 2.6 mm Check price on Amazon
Celestron UpClose G2 10x25 10x25 300 ft 11 mm 15 ft 11 oz 2.5 mm Check price on Amazon
Celestron UpClose G2 7x35 7x35 483 ft 13 mm 13 ft 22 oz 5 mm
Celestron UpClose G2 8x40 8x40 429 ft 12 mm 19 ft 24 oz 5 mm
Celestron UpClose G2 10x50 10x50 354 ft 12 mm 23 ft 27 oz 5 mm
Celestron UpClose G2 10-30x50 10-30x50 225 ft 20 mm 26 ft 28 oz 5 mm
Celestron UpClose G2 20x50 20x50 168 ft 7 mm 42 ft 28 oz 2.5 mm Check price on Amazon

Celestron binoculars

UpClose G2 8x21 questions

UpClose G2 8x21: does it work with glasses?

UpClose G2 8x21 has 11 mm of eye relief, well short of the 16 mm the RSPB advises for people who wear glasses.

UpClose G2 8x21: what does 8x21 mean?

UpClose G2 8x21 magnifies 8 times through 21 mm front lenses, which works out to an exit pupil of 2.6 mm, the width of the beam of light that reaches each eye.

UpClose G2 8x21: can it go on a tripod?

Celestron does not list the UpClose G2 8x21 as tripod adaptable.