Skip to content
Until May 2nd, 2025, orders under US$800 will not incur any duties or taxes upon delivery. Please note that orders under US$800 crossing the Canada-USA border after this date will be subject to duties. They will be billed by the carrier, and you will be responsible to pay them. Prioritize ordering items that are in stock!
Until May 2nd, 2025, orders under US$800 will not incur any duties or taxes upon delivery. Please note that orders under US$800 crossing the Canada-USA border after this date will be subject to duties. They will be billed by the carrier, and you will be responsible to pay them. Prioritize ordering items that are in stock!
Explore Scientific 52° 40mm Waterproof Eyepiece - 2"

Explore Scientific 52° 40mm Waterproof Eyepiece - 2"

by Explore Scientific
SKU ES-EPWP5240-01
$179.99
$179.99 USD - $179.99 USD
$179.99 USD
$179.99
$179.99 USD - $179.99 USD
$179.99 USD
Availability:
Only 1 left!

Free Shipping on most orders above $350*

More information

The longest focal length in the 52° Series with the longest eye relief, the 40mm is also the only 2.0-inch O.D. eyepiece in this series. Explore Scientific now has three 40mm eyepieces in its collection, the other two are the 40mm 62° Series, and the 40mm 68° Series. At this focal length, this eyepiece is generally reserved for deep sky observers who challenge themselves to observe near the faintest observable limit of their telescopes. The huge true field of view is perfect for deep sky objects like the Andromeda Galaxy, the Rosette Nebula, as well as large star clusters, and comets.

You may also like

  • $119.99 USD - $119.99 USD
    $119.99 USD
    $119.99 USD - $119.99 USD
    $119.99 USD

    Explore Scientific 52° 10mm Waterproof Eyepiece - 1.25"

    ES-EPWP5210-01
    1 in stock

    Eyepieces at or near the 10mm range are often considered a mandatory focal length in your collection, as this focal length range is departure point...

    View full details
    $119.99 USD - $119.99 USD
    $119.99 USD
    $119.99 USD - $119.99 USD
    $119.99 USD
  • $289.99 USD - $289.99 USD
    $289.99 USD
    $289.99 USD - $289.99 USD
    $289.99 USD

    Explore Scientific 62° 40mm Waterproof Eyepiece - 2"

    ES-EPWP6240LE-01

    Explore Scientific Waterproof Eyepieces - Comfort, Quality, Value. The Explore Scientific 62° Series eyepieces are excellent flat-field multi-eleme...

    View full details
    $289.99 USD - $289.99 USD
    $289.99 USD
    $289.99 USD - $289.99 USD
    $289.99 USD
  • $519.99 USD - $519.99 USD
    $519.99 USD
    $519.99 USD - $519.99 USD
    $519.99 USD

    Explore Scientific 68° 40mm Waterproof Eyepiece - 2"

    ES-EPWP6840-01
    1 in stock

    Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

    View full details
    $519.99 USD - $519.99 USD
    $519.99 USD
    $519.99 USD - $519.99 USD
    $519.99 USD
  • $269.99 USD - $269.99 USD
    $269.99 USD
    $269.99 USD - $269.99 USD
    $269.99 USD

    Explore Scientific 82° 4.5mm LER Waterproof Eyepiece - 1.25"

    ES-EPWP8245LE-01
    2 in stock

    With its particularly long eye relief of 15.9mm, the 4.5mm LER ocular from Explore Scientific’s 82° Series of Argon-Purged Waterproof Eyepieces put...

    View full details
    $269.99 USD - $269.99 USD
    $269.99 USD
    $269.99 USD - $269.99 USD
    $269.99 USD
  • $149.99 USD - $149.99 USD
    $149.99 USD
    $149.99 USD - $149.99 USD
    $149.99 USD

    Explore Scientific 52° 30mm Waterproof Eyepiece - 1.25"

    ES-EPWP5230-01
    2 in stock

    Loved by deep sky observers, a 30mm focal length eyepiece produces a large exit pupil which floods your dilated eye with light, which is needed to ...

    View full details
    $149.99 USD - $149.99 USD
    $149.99 USD
    $149.99 USD - $149.99 USD
    $149.99 USD