Coronado CEMAX Solar Eyepiece Set with Case

Coronado CEMAX Solar Eyepiece Set with Case

Coronado CEMAX Solar Eyepiece Set with Case

B&H # CO2XB3EPK MFR # CEP

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Product Highlights

  • 12/18/25mm CEMAX Eyepieces
  • 2x CEMAX Barlow Lens
  • 1.25" Diameter Barrel
  • 20mm Eye Relief
  • Fully Multi-Coated Optics
  • Designed for H-Alpha Solar Viewing
  • Includes Hard Carrying Case
  • Requires Blocking and SolarMax Filters
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SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

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$225.00
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Coronado CEP overview

  • 1Description

The CEMAX Eyepiece Set from Coronado is comprised of the CEMAX 12, 18, and 25mm eyepieces, and the CEMAX 2x Barlow lens; all with 1.25" diameter barrels to fit the most common size focuser and filters. The relatively long focal lengths produce moderate magnifications while still providing a nice variety of observational options, and the Barlow lens doubles the power of each eyepieces, for even more versatility. To keep the eyepieces and Barlow lens safe and procted, Meade includes a hard carrying case with a custom-cut foam lining.

These eyepieces are not filters, and when used as part of a solar viewing system, they must be used in conjunction with a blocking filter and a SolarMax filter.

  • CEMAX 2x Barlow Lens (1.25")

    The Coronado CEMAX 2x Barlow Lens doubles the magnification of any 1.25" eyepiece to increase the usability of the eyepiece without affecting exit pupil, eye relief image or overall image brightness. While it may be used for conventional nighttime astronomical observation, it has been designed primarily for use at H-alpha (Ha) wavelengths with fully multi-coated optics tuned to ensure maximum contrast when used with Ha solar filters.

    This Barlow lens is not a filter, and when used as part of a solar viewing system, it must be used in conjunction with a blocking filter and a SolarMax filter.

    UPC: 709942995084
  • CEMAX 12mm H-Alpha Solar Eyepiece (1.25")

    The CEMAX 12mm H-Alpha Solar Eyepiece from Coronado is designed with optical coatings that are specifically engineered to enhance contrast and minimize glare, and also affords excellent contrast for planetary viewing. CEMAX eyepieces are not filters and offer no protection during solar viewing, so they must be used in conjunction with a complete SolarMax filter system when observing the Sun.

    It is outfitted with the common 1.25" diameter barrel to fit most eyepiece holders and accessories, and a fold-down rubber eyecup for use with or without eyewear. The 52° field of view offers a generous amount of visible area whether viewing during the day or at night.

    UPC: 709942995053
  • CEMAX 18mm H-Alpha Solar Eyepiece (1.25")

    The CEMAX 18mm H-Alpha Solar Eyepiece from Coronado is designed with optical coatings that are specifically engineered to enhance contrast and minimize glare, and also affords excellent contrast for planetary viewing. CEMAX eyepieces are not filters and offer no protection during solar viewing, so they must be used in conjunction with a complete SolarMax filter system when observing the Sun.

    It is outfitted with the common 1.25" diameter barrel to fit most eyepiece holders and accessories, and a fold-down rubber eyecup for use with or without eyewear. The 52° field of view offers a generous amount of visible area whether viewing during the day or at night.

    UPC: 709942995060
In the Box
Bundle Items
  • Push-On Rear Cap
  • Push-On Front Cap
  • Limited 1-Year Warranty
  • Push-On Front Cap
  • Push-On Rear Cap
  • Limited 1-Year Warranty
  • Push-On Front Cap
  • Push-On Rear Cap
  • Limited 1-Year Warranty

Also Includes

  • 25mm CEMAX Eyepiece
  • Hard Carrying Case
  • Limited Lifetime Warranty
Table of Contents
  • 1Description
  • CEMAX 2x Barlow Lens (1.25")
    Dimensions 1.5 x 3.1" / 3.7 x 7.8 cm
    Weight 3.4 oz / 95 g
    Packaging Info
    Box Dimensions (LxWxH) 3.5 x 2.0 x 2.0"
  • CEMAX 12mm H-Alpha Solar Eyepiece (1.25")
    Focal Length 12 mm
    Eye Relief 20 mm
    Apparent Field of View 52°
    Packaging Info
    Box Dimensions (LxWxH) 2.7 x 1.8 x 1.7"
  • CEMAX 18mm H-Alpha Solar Eyepiece (1.25")
    Focal Length 18 mm
    Eye Relief 20 mm
    Apparent Field of View 52°
    Packaging Info
    Box Dimensions (LxWxH) 3.1 x 1.8 x 1.6"

Coronado CEP reviews

CEMAX Solar Eyepiece Set with Case is rated 4.3 out of 5 by 3.
Rated 3 out of 5 by from OK performance Testing on a Coronado PST. The eyepieces are not parfocal and the barlow is not usable. PST came with a Kellner 20mm which is very close in performance to the 18mm CEMAX (too low power, really). The 25mm is even lower power, which is not very useful on the PST. Getting your eye into the light cone on the 18 and 25 is challenging naked eye. With glasses it is easier to stay in the right spot, but you lose out on the field of view. The original K20 is similar, but not as bad. The 12mm CEMAX is a good fit to the PST for field of view, and magnification. Keeping your eye positioned for viewing is much easier than the 18 and 25mm eyepieces. In hind sight, I would only buy the 12mm and leave it at that.
Date published: 2018-06-18
Rated 5 out of 5 by from Sun viewing A must accessory for the coronado PST telescope.
Date published: 2012-08-30
Rated 5 out of 5 by from good product, great salesperson The product is fine....
Date published: 2011-09-17
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