ƒtDtNo
315530510.312" Schmidt Cassegrain

TRUE FIELD OF VIEW (arcminutes)

APPARENT FIELD OF VIEW
ƒeEPMt304045505560657080

Eyepiece BrandNominal AFOV
555.35731.441.847.152.357.562.868.073.283.7Edmund Hastings30
504.86328.538.042.847.552.357.161.866.676.1
454.47025.734.238.542.847.151.355.659.968.5UO Ortho41
403.97922.830.434.238.041.845.649.453.260.9UO Ortho HD42
363.58820.527.430.834.237.741.144.547.954.8
323.19918.324.327.430.433.536.539.642.648.7Celestron43
313.010217.723.626.529.532.435.438.341.347.2Russell Military Erfle43
302.910517.122.825.728.531.434.237.139.945.6VS Brandon44
282.711316.021.324.026.629.331.934.637.342.6Pentax XO45
262.512114.819.822.324.727.229.732.134.639.6
252.412614.319.021.423.826.128.530.933.338.0Edmund RKE48
242.313113.718.320.522.825.127.429.731.936.5Russell RKE48
232.213713.117.519.721.924.126.228.430.635.0Tele Vue Plossl49
222.114312.616.718.820.923.025.127.229.333.5Takahashi LE50
212.015012.016.018.020.022.024.026.028.031.9Vixen NLV51
201.915811.415.217.119.020.922.824.726.630.4Russell Superwide XL52
191.816610.814.516.318.119.921.723.525.328.9
181.717510.313.715.417.118.820.522.324.027.4UO Planetary54
171.61869.712.914.516.217.819.421.022.625.9
161.51979.112.213.715.216.718.319.821.324.3Meade 500060
151.52108.611.412.814.315.717.118.520.022.8TMB Planetary II61
141.42258.010.612.013.314.616.017.318.621.3
131.32437.49.911.112.413.614.816.117.319.8Denkmeier66
121.22636.89.110.311.412.613.714.816.018.3Vixen LVW65
111.12876.38.49.410.511.512.613.614.616.7Meade SWA66
101.03165.77.68.69.510.511.412.413.315.2
90.93515.16.87.78.69.410.311.112.013.7Pentax XW70
80.83944.66.16.87.68.49.19.910.612.2UO WideScan73
7.50.74214.35.76.47.17.88.69.310.011.4BP Hyperion74
70.74514.05.36.06.77.38.08.79.310.6UO SWA75
6.50.64853.74.95.66.26.87.48.08.79.9
60.65263.44.65.15.76.36.87.48.09.1UO UltraWide77
5.50.55743.14.24.75.25.86.36.87.38.4Explore Scientific N280
50.56312.93.84.34.85.25.76.26.77.6
4.50.47012.63.43.94.34.75.15.66.06.8
40.47892.33.03.43.84.24.64.95.36.1
3.50.39012.02.73.03.33.74.04.34.75.3
30.310521.72.32.62.93.13.43.74.04.6