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 22 of 178 
Orion Telescopes
4mm Orion LHD 80-Degree Lanthanum Ultra-Wide Eyepiece
$279.99
 
Accepted Payment
In Stock
  • This 4mm focal length, 8-element telescope eyepiece will amaze you with vivid, panoramic views of the night sky
  • Orion LHD eyepieces feature high-index, low-dispersion lanthanum glass for exceptional control of chromatic aberrations to provide true-color views with outstanding clarity
  • All Orion LHD telescope eyepieces boast an ultra-wide 80-degree apparent field of view for an immersive viewing experience
  • Long 20mm eye relief lets eyeglass wearers enjoy the view comfortably without removing glasses
  • The fully multi-coated 4mm LHD eyepiece features a tapered 1.25" barrel which is threaded for use with 1.25" eyepiece filters


Learn more
Item #  51042

With an ultra-wide 80 field of view and true-color lanthanum optics, the powerful 4mm Orion LHD eyepiece is sure to impress you with exquisite views of the night sky.

Like all Orion LHD eyepieces, this 4mm model features an element of lanthanum glass which eliminates color-fringing and chromatic aberrations for true-color, high-contrast views of the cosmos with exceptional clarity. The luxuriously wide 80 apparent field-of-view provides an almost panoramic viewing experience you must experience first-hand to fully appreciate. Views of everything from the Moon and planets to elusive deep-sky objects are impressively immersive in the fully multi-coated 4mm LHD Ultra-Wide Eyepiece.

All Orion LHD 80 Lanthanum Ultra-Wide Eyepieces are designed with viewing comfort in mind. All LHD eyepieces sport a large, 30mm-diameter eye lens to peer into for a relaxing experience. Each LHD eyepiece boasts a very long 20mm eye relief so you can see the entire 80 field comfortably. If you wear eyeglasses while stargazing, you can leave them on while using an Orion LHD eyepiece and still enjoy the full field-of-view without eye strain.

The 4mm Orion LHD 80-Degree Lanthanum Ultra-Wide Eyepiece features a tapered 1.25" barrel. The tapered barrel helps the eyepiece stay put in focusers and diagonals if a setscrew happens to become slightly loose during use. The 1.25" eyepiece barrel is threaded for use with compatible 1.25" Orion eyepiece filters.

Warranty

Limited Warranty against defects in materials or workmanship for one year from date of purchase. This warranty is for the benefit of the original retail purchaser only. For complete warranty details contact us at 800-447-1001.

Warning

Please note this product was not designed or intended by the manufacturer for use by a child 12 years of age or younger.

  • Design
    Ultrawide
  • Eyepiece focal length
    4.0mm
  • Barrel size
    1.25"
  • Apparent field of view
    80.0°
  • Eye relief
    20.0mm
  • Coatings
    Fully multi-coated
  • Number of elements
    8
  • Filter threads
    Yes
  • Parfocal
    Yes
  • Field stop diameter
    33.4mm
  • Barrel security recess
    Yes
  • Blackened lens edges
    Yes
  • Rubber eyeguards
    Yes
  • Body material
    Aluminum
  • Case
    Yes
  • Weight (oz.)
    20
  • Warranty
    One year

Orders received by 1pm Eastern Standard Time for in-stock items ship the same business day. Order received after noon will ship the next business day. When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available. You have the option in check out to request that your order ship complete, if you'd prefer.

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