Eyepieces

11 Item(s)
Set Ascending Direction
  1. Pentax - SMC XW 3.5mm Eyepiece

    $299.00
    SKU: PE-70511

    In stock

    FREE SHIPPING(48 States)
  2. Pentax - SMC XW 20mm Eyepiece

    $299.00
    SKU: PE-70516

    In stock

    FREE SHIPPING(48 States)
  3. Pentax - XW40-R 40mm 70° Eyepiece - 2"

    $399.95
    SKU: PE-70538

    In stock

    Ricoh Imaging is pleased to announce the release of the XW30-R and XW40-R eyepieces as part of the Sports Optics Line. These eyepieces are specially designed to offer an excellent field of view while the fully multi-coated lenses increase light transmission and color quality. The XW30-R and the XW-40R are the perfect eyepieces for viewing the nebula, planets and exploring the night sky.

    FREE SHIPPING(48 States)
  4. Pentax - SMC XW 10mm Eyepiece

    $299.00
    SKU: PE-70514

    Estimated shipping time is 3-5 Days

    FREE SHIPPING(48 States)
  5. Pentax - SMC XF 6.5mm to 19.5mm Zoom Eyepiece

    $289.00
    SKU: PE-70530

    Estimated shipping time is 3-5 Days

    FREE SHIPPING(48 States)
  6. Pentax - SMC XW 5mm Eyepiece

    $299.00
    SKU: PE-70512

    In stock

    FREE SHIPPING(48 States)
  7. Pentax - SMC XF 8.5mm Eyepiece

    $129.00
    SKU: PE-70531

    Estimated shipping time is 3-5 Days

  8. Pentax - SMC XW 14mm Eyepiece

    $299.00
    SKU: PE-70515

    In stock

    FREE SHIPPING(48 States)
  9. Pentax - XW30-R 30mm 70° Eyepiece - 2"

    $369.95
    SKU: PE-70537

    Pre Order

    Ricoh Imaging is pleased to announce the release of the XW30-R and XW40-R eyepieces as part of the Sports Optics Line. These eyepieces are specially designed to offer an excellent field of view while the fully multi-coated lenses increase light transmission and color quality. The XW30-R and the XW-40R are the perfect eyepieces for viewing the nebula, planets and exploring the night sky.

    FREE SHIPPING(48 States)
  10. Pentax - SMC XW 7mm Eyepiece

    $299.00
    SKU: PE-70513

    In stock

    FREE SHIPPING(48 States)
  11. Pentax - SMC XF 12mm Eyepiece

    $129.00
    SKU: PE-70532

    Estimated shipping time is 3-5 Days

11 Item(s)
Set Ascending Direction

The specifications of a telescope are NOT the only specs that matter. The other half of the equation is the specifications of the eyepiece. Telescope eyepieces are made in different models and sizes to accommodate different observing methods and celestial objects. For example, understanding the focal length of your optical tube divided by the focal length of your eyepiece will result in magnification, which in return can tell you whether it is more suitable for deep space low surface brightness observation or planetary/terrestrial high surface brightness observation. For example, if you wanted to observe an object such as the Andromeda Galaxy with a large apparent diameter, an eyepiece with a long focal length and large apparent field of view would excel over an eyepiece with a shorter focal length and small apparent field of view because it would be able to accommodate the size of the object at low magnification and high FOV while not getting dimmer images as you would with short focal lengths. If you plan on observing planets, a short focal length eyepiece with a small FOV will result in high magnification to observe details on the surface (eg. Great Red Spot). You'll get a dimmer image, but since planets are already bright as it is, this won't be an issue. - Note: Almost all eyepieces come in 2" or 1.25" barrel size forms.