Before you buy eyepieces

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Eyepieces – you can’t look through a telescope without any eyepieces.

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  • The shorter the focal length of the eyepiece, the higher magnifications it produces.
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  • It makes sense to have eyepieces in a range of focal lengths, preferably a reasonable selection which takes you in even steps from low to high magnification – to equip you for all the different types of observing and astronomical objects.
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  • Do not buy five or more eyepieces.
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  • It’s much better to buy three to four good ones.
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  • Good eyepieces create a win-win situation for you and your telescope.

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Good brands as high quality eyepieces

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Low to High magnifications eyepieces it produces

Below are rough guides and are dependent on the telescope you use:

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High Magnification
The shorter the focal length of the eyepiece,
the higher magnifications it produces.
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  • 2mm-4.9mm Eyepieces:
    These are very high magnification and very difficult to use unless seeing conditions are perfect and the object observed is very bright, like the moon.
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  • 5mm – 6.9mm Eyepieces:
    These are good on bright objects such as the moon and bright planets, but are still very high power and work best with steady seeing conditions.
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  • 7mm – 9.9mm Eyepieces:
    These are very comfortable high magnification eyepieces and are excellent for observing brighter objects, a must for any eyepiece collection.
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  • 10mm – 13.9mm Eyepieces:
    These work well for all objects including brighter nebula and galaxies a good mid/high range magnification.
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  • 14mm – 17.9mm Eyepieces:
    These are a great mid range magnification and will help resolve globular clusters, galaxy details and planetary nebulae.
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  • 18mm – 24.9mm Eyepieces:
    These will work nicely to show wide field and extended objects, great mid-range magnification for objects like galaxy clusters and large open clusters.
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  • 25mm – 30.9mm Eyepieces:
    These are wider field eyepieces for large nebula and open clusters – a good finder eyepiece for locating objects before moving to higher powers.
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  • 31mm – 40mm Eyepieces:
    These are excellent for extended views and large star fields and make excellent finder eyepieces before moving to higher powers.
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Low Magnification
The high the focal length of the eyepiece, low & wide magnifications it produces.

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Field of View Calculator

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Here the link below to help you
testing different telescope, camera, eyepiece combinations
by astronomy tools, before you decide to buy one.
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Field of View Calculator

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Eyepieces Shop

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BSL available

Most Deaf people who use sign language in the UK use BSL. It is a rich combination of hand gestures, facial expressions and body language. Facetime, Derek who can help with it.

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Website

Astronomy Telescope retailers
at Birmingham

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  • Steve at ENS Optical, he’s a friendly experts for astronomy telescopes, binoculars, cameras, astrophotography, bags or cases, accessories, and many more items.
  • great for astronomers to start with it at low budgets.
  • he has also deaf awareness too.
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Website:
ENS optical
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Email:
Contact them
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Telephone:
0121 382 0928
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Text to Steve Asbury:
07593 081684
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Facetime / Text to Derek:
07845 319228
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Opening Times:
Monday to Friday 10am – 3pm
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Location:
ENT Optical, 802 Kingsbury Road, Erdington, Birmingham, West Midlands, B24 9PS.

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