Values in orange are higher than recommended for optimal viewing given the objective size of the scope.* Eyepieces that have 2” diameter mounting tubes are not compatible with Celestron Spotting Scopes** The C70 1.25” Eyepiece Adapter (included with the scope) is required for the use of 1.25 inch diameter astronomical eyepieces

Important Notes:All Celestron E-Lux eyepieces feature 2 inch diameter mounting tubes and so are not included in this chartCelestron Ultima, UpClose, and LandScout spotting scopes are not compatible with either 1.25 or 2.0 inch diameter astronomical eyepieces

7mm 10mm 15mm 10mm 15mm 18mm 24mm 2.3mm 5mm 7mm 9mm 12mm 18mm 25mm 5mm 8mm 10mm 13mm 17mm 21mm 4mm 6mm 9mm 12mm 15mm 32mm 40mm 8mm 24mm

HUMMINGBIRD ED FOCAL LENGTH

50mm 170mm 24.3 17.0 11.3 17.0 11.3 9.4 7.1 73.9 34.0 24.3 18.9 14.2 9.4 6.8 34.0 21.3 17.0 13.1 10.0 8.1 42.5 28.3 18.9 14.2 11.3 5.3 4.3 21.3 7.1

56mm 200mm 28.6 20.0 13.3 20.0 13.3 11.1 8.3 87.0 40.0 28.6 22.2 16.7 11.1 8.0 40.0 25.0 20.0 15.4 11.8 9.5 50.0 33.3 22.2 16.7 13.3 6.3 5.0 25.0 8.3

TRAILSEEKER FOCAL LENGTH

65mm 386mm 55.1 38.6 25.7 38.6 25.7 21.4 16.1 167.8 77.2 55.1 42.9 32.2 21.4 15.4 77.2 48.3 38.6 29.7 22.7 18.4 96.5 64.3 42.9 32.2 25.7 12.1 9.7 48.3 16.1

80mm 480mm 68.6 48.0 32.0 48.0 32.0 26.7 20.0 208.7 96.0 68.6 53.3 40.0 26.7 19.2 96.0 60.0 48.0 36.9 28.2 22.9 120.0 80.0 53.3 40.0 32.0 15.0 12.0 60.0 20.0

100mm 540mm 77.1 54.0 36.0 54.0 36.0 30.0 22.5 234.8 108.0 77.1 60.0 45.0 30.0 21.6 108.0 67.5 54.0 41.5 31.8 25.7 135.0 90.0 60.0 45.0 36.0 16.9 13.5 67.5 22.5

REGAL ED FOCAL LENGTH

65mm 382mm 54.6 38.2 25.5 38.2 25.5 21.2 15.9 166.1 76.4 54.6 42.4 31.8 21.2 15.3 76.4 47.8 38.2 29.4 22.5 18.2 95.5 63.7 42.4 31.8 25.5 11.9 9.6 47.8 15.9

80mm 382mm 68.6 48.0 32.0 48.0 32.0 26.7 20.0 208.7 96.0 68.6 53.3 40.0 26.7 19.2 96.0 60.0 48.0 36.9 28.2 22.9 120.0 80.0 53.3 40.0 32.0 15.0 12.0 60.0 20.0

100mm 540mm 77.1 54.0 36.0 54.0 36.0 30.0 22.5 234.8 108.0 77.1 60.0 45.0 30.0 21.6 108.0 67.5 54.0 41.5 31.8 25.7 135.0 90.0 60.0 45.0 36.0 16.9 13.5 67.5 22.5

CATADIOPTRIC FOCAL LENGTH

C70** 750mm 107.1 75.0 50.0 75.0 50.0 41.7 31.3 326.1 150.0 107.1 83.3 62.5 41.7 30.0 150.0 93.8 75.0 57.7 44.1 35.7 187.5 125.0 83.3 62.5 50.0 23.4 18.8 93.8 31.3

C90 1250mm 178.6 125.0 83.3 125.0 83.3 69.4 52.1 543.5 250.0 178.6 138.9 104.2 69.4 50.0 250.0 156.3 125.0 96.2 73.5 59.5 312.5 208.3 138.9 104.2 83.3 39.1 31.3 156.3 52.1

C5 1250mm 178.6 125.0 83.3 125.0 83.3 69.4 52.1 543.5 250.0 178.6 138.9 104.2 69.4 50.0 250.0 156.3 125.0 96.2 73.5 59.5 312.5 208.3 138.9 104.2 83.3 39.1 31.3 156.3 52.1

LUMINOS ULTIMA EDGE X-CEL LX ULTIMA DUO OMNIEYEPIECES

SPOTTING SCOPES

DELUXE ZOOM

01/2021

Astronomical Eyepiece Magnification Values When Mounted on Celestron Spotting Scopes