Search results

Create the page "Eyepiece" on this wiki! See also the search results found.

• Recommended Mounts for Beginning Astrophotography
  ...view is similar to the relationship between the telescope focal length and eyepiece focal length. The larger the sensor size, the wider the field of view will
  6 KB (1,114 words) - 17:33, 8 April 2019
• Problems Focusing A Newtonian Telescope With a Camera
  ...wn focal lengths. To achieve focus for an eyepiece, the focal point of the eyepiece and the focal point of the telescope must come together. ...ition of the eyepiece in relation to that of the telescope, this moves the eyepiece's focal point in and out so that you can adjust its position and reach focu
  6 KB (994 words) - 18:32, 14 February 2019
• Exit Pupil
  An eyepiece's primary purpose is to magnify the view in a telescope, but how much magni ...s easier to think of it as the size of the "beam" of light that leaves the eyepiece and enters the eye. The larger the exit pupil, the brighter the view will b
  8 KB (1,409 words) - 13:10, 4 February 2020
• Field of View
  ...ew appears to your eye as you peer into the eyepiece. In contrast, a given eyepiece and telescope combination will also have a ''true'' field of view, which de ...see has an apparent [[angular size]] of 50 degrees. Meanwhile a 100 degree eyepiece shows you a circle of light that is 100 degrees in angular size.
  8 KB (1,285 words) - 22:07, 17 May 2019
• Barrel Size
  ...for a wider [[field of view]] at lower magnification. For example, a 40mm eyepiece in a 1.25" barrel can only have an apparent field of view of about 42 degre ...2" [[focuser]]s without the need for an adapter. It has no bearing on the eyepiece's optical performance, it simply is a matter of convenience.
  3 KB (536 words) - 23:21, 19 May 2019
• Focal Ratio
  ...fication, or aperture does on brightness, but it does affect how well an [[eyepiece]] performs. ...This steep angle of convergence must be straightened out or re-bent by the eyepiece in order to form a magnified, focused image. However, this process of refra
  7 KB (1,162 words) - 17:38, 20 May 2019
• Magnification
  ...the magnification factor is 40x. If the eyepiece is exchanged for a 10mm eyepiece, the magnification factor is then 100x. ...o eyepieces have the same AFOV, then if you double the focal length of the eyepiece, you double the field of view, making the object appear 1/2 as large.
  3 KB (470 words) - 17:04, 20 May 2019
• Barlow
  A Barlow is a kind of telenegative lens that sits between the focuser and the eyepiece, whose purpose is to increase the effective focal length of the telescope. ...would then double the magnification of any eyepieces used in it. If a 10mm eyepiece produced 100x magnification, then with a Barlow it would produce 200x magni
  6 KB (1,062 words) - 21:57, 20 May 2019
• Chromatic aberration
  ...an eyepiece is used, there may be some chromatic aberration caused by the eyepiece, though this is typically less noticeable.
  3 KB (576 words) - 20:05, 25 May 2022
• Getting Started in Astrophotography
  ...is. Many seem to think it's as simple as just plugging a camera into the eyepiece receptacle of a telescope and snapping pictures. In reality, it's far more
  19 KB (3,215 words) - 16:15, 20 January 2020