Eyepiece and telescope pairing
Explore Scientific 6.7mm 82 Degree in the Celestron StarSense Explorer DX 130AZ: magnification and field
What the Explore Scientific 6.7mm 82 Degree does in the Celestron StarSense Explorer DX 130AZ, worked from the published focal lengths and apparent field.
Field of view
ring = 0.85 degrees true
dot = 1.3 mm exit pupil
- Magnification
- 97x650 mm / 6.7 mm
- True field
- 0.85 degrees82 deg / 97x
- Exit pupil
- 1.3 mm130 mm / 97x
- Max useful mag
- 307xpublished
Computed optics
- Barrel match
- 1.25 in eyepiece in a 1.25 in focuser
Good fit. In the Celestron StarSense Explorer DX 130AZ the Explore Scientific 6.7mm 82 Degree gives 97x with a 0.85 degree true field and a 1.3 mm exit pupil, inside the telescope's useful range.
Magnification is the telescope focal length divided by the eyepiece focal length: 650 mm divided by 6.7 mm is 97x. The true field of view is the eyepiece's 82 degree apparent field divided by that magnification, 0.85 degrees.
The exit pupil, the width of the light beam leaving the eyepiece, is the aperture divided by the magnification, 130 mm over 97x, which is 1.3 mm. That makes this a high-power lunar, planetary and double-star setting.
The eyepiece to buy
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