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Celestron Omni 40mm Eyepiece (1.25")

You Pay: $39.95
Product Highlights
  • 43° Apparent Field of View
  • 31mm Eye Relief

If you're looking for a higher quality eyepiece than the standard-issue offering that come with most telescopes, the 40.0mm Omni provides more enhanced features at a great value.  Celestron designed the 40.0mm Omni with attention to the details that separate good eyepieces from average ones.  It is a 4-element Plossl formula with blackened lens edges, multilayer coatings upon each surface and an anodized barrel.  These features combine to increase contrast and light transmission, and of course it is threaded to accept Celestron's many 1.25" eyepiece filters.

Focal Length 40.0mm
Eye Relief 31.0mm
Apparent Field of View 43°
Dimensions 1.6 x 3.8" (41 x 96mm) WxH
Weight 0.41 lb (185 g)
Celestron Omni 40mm Eyepiece (1.25")
  • Front & Rear Lenscaps
  • 1-Year Warranty
  • REVIEW SNAPSHOT®

    by PowerReviews
    CelestronOmni 40mm Eyepiece (1.25")
     
    4.5

    (based on 10 reviews)

    Ratings Distribution

    • 5 Stars

       

      (7)

    • 4 Stars

       

      (2)

    • 3 Stars

       

      (0)

    • 2 Stars

       

      (1)

    • 1 Stars

       

      (0)

    89%

    of respondents would recommend this to a friend.

    Pros

    • Strong construction (7)
    • Great optics (6)
    • Easy to use (4)
    • Quality lenses (3)

    Cons

      Best Uses

      • Astronomy (7)
      • Terrestrial viewing (3)
        • Reviewer Profile:
        • Casual/ recreational (7)
        • Was this a gift?:
        • No (9)

      Most Liked Positive Review

       

      An open gate to the night sky

      With a quite impressive body size, compared to my old eyepieces, the view through is really impressive. It's just like if you were gazing directly at the sky, but with a lot of...Read complete review

      With a quite impressive body size, compared to my old eyepieces, the view through is really impressive. It's just like if you were gazing directly at the sky, but with a lot of stars you woulnd't be able to see without.
      And for the moon, you simply feel as flying around.
      Very comfortable, you don't get tired looking through it.
      For the children, it's perfect because it is very easy to use (you can have both eyes wide open)

      VS

      Most Liked Negative Review

       

      Buy the Omni 32mm instead

      This is an okay eyepiece but since the field of view is only 43 degrees it's virtually the same image as what you'll see with the 32mm Omni at 52 degrees. I purchased both...Read complete review

      This is an okay eyepiece but since the field of view is only 43 degrees it's virtually the same image as what you'll see with the 32mm Omni at 52 degrees. I purchased both of these before I realized this and now I only use the 32mm. There doesn't seem to be a point for the 40mm to exist.

      Reviewed by 10 customers

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      Displaying reviews 1-10

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      5.0

      Handy for alignment

      By ohaganrh

      from Wellsville, NY

      Verified Buyer

      Comments about Celestron Omni 40mm Eyepiece (1.25"):

      Nice EP, handy for alignment and general observing. I mainly use this to get my finder dialed in and a basic alignment.

      Share this review

       
      4.0

      Vast improvement

      By Really? Bite me!

      from Juneau, Alaska

      About Me Casual/ Recreational

      Verified Buyer

      Pros

      • Great Optics

      Cons

        Best Uses

        • Terrestrial Viewing

        Comments about Celestron Omni 40mm Eyepiece (1.25"):

        At last, some decent lenses for viewing terrestrial objects and events. Crystal clear viewing.

        Original lenses were great for astronomical viewing.

        • Was this a gift?:
        • No

        Share this review

         
        5.0

        Solid Eyepiece

        By EnigmaticWraith

        from Novato, CA

        About Me Casual/ Recreational

        Verified Buyer

        Pros

        • Easy To Use
        • Good Padding
        • Great Optics
        • Strong Construction

        Cons

          Best Uses

          • Astronomy
          • Astrophotography
          • Terrestrial Viewing

          Comments about Celestron Omni 40mm Eyepiece (1.25"):

          This is a great eyepiece for the price. It is comfortable to use and feels very solidly made.

          • Was this a gift?:
          • No

          Share this review

           
          4.0

          Quality for the price

          By Bubba

          from San Francisco, CA

          About Me Avid Adventurer

          Verified Buyer

          Pros

          • Easy To Use
          • Great Optics
          • Strong Construction
          • Widely Compatible Adapter

          Cons

            Best Uses

            • Astronomy
            • Primary Alignment

            Comments about Celestron Omni 40mm Eyepiece (1.25"):

            I use this for easier alignment of the the primary scope.

            • Was this a gift?:
            • No

            Share this review

             
            5.0

            Great value for the money

            By george

            from Palm Desert, CA

            About Me Casual/ Recreational

            Verified Buyer

            Pros

            • Easy To Use
            • Great Optics

            Cons

              Best Uses

              • Astronomy

              Comments about Celestron Omni 40mm Eyepiece (1.25"):

              This eyepiece performs as advertised/expected. I would recommend it to anybody. I am using it with a 1200mm Orion Dobsonian reflector to give me 30x magnification. The original Orion eyepice is 28 mm, so this gives me a wider field of view.

              • Was this a gift?:
              • No

              Share this review

              (1 of 1 customers found this review helpful)

               
              2.0

              Buy the Omni 32mm instead

              By CoolNite

              from Santa Clarita, CA

              About Me Casual/ Recreational

              Verified Reviewer

              Pros

              • Easy To Use
              • Great Optics
              • Strong Construction

              Cons

              • Narrow field of view

              Best Uses

                Comments about Celestron Omni 40mm Eyepiece (1.25"):

                This is an okay eyepiece but since the field of view is only 43 degrees it's virtually the same image as what you'll see with the 32mm Omni at 52 degrees. I purchased both of these before I realized this and now I only use the 32mm. There doesn't seem to be a point for the 40mm to exist.

                • Was this a gift?:
                • No

                Share this review

                 
                5.0

                Excellent for the money.

                By Grant

                from Bloomington, MN

                About Me Casual/ Recreational

                Verified Buyer

                Pros

                • Great Optics
                • Strong Construction

                Cons

                  Best Uses

                  • Astronomy
                  • Terrestrial Viewing

                  Comments about Celestron Omni 40mm Eyepiece (1.25"):

                  A sharp eyepiece that performs well beyond its price. Nicely made, too.

                  • Was this a gift?:
                  • No

                  Share this review

                   
                  5.0

                  An open gate to the night sky

                  By Bzh972

                  from Fort de France, Martinique, France

                  About Me Casual/ Recreational

                  Verified Reviewer

                  Pros

                  • Quality Lenses
                  • Strong Construction

                  Cons

                  • Heavy

                  Best Uses

                  • Astronomy

                  Comments about Celestron Omni 40mm Eyepiece (1.25"):

                  With a quite impressive body size, compared to my old eyepieces, the view through is really impressive. It's just like if you were gazing directly at the sky, but with a lot of stars you woulnd't be able to see without.
                  And for the moon, you simply feel as flying around.
                  Very comfortable, you don't get tired looking through it.
                  For the children, it's perfect because it is very easy to use (you can have both eyes wide open)

                  • Was this a gift?:
                  • No

                  Share this review

                  (0 of 1 customers found this review helpful)

                   
                  5.0

                  Enlightening experience

                  By Gilles

                  from Rouyn-Noranda Qc

                  About Me Casual/ Recreational

                  Verified Buyer

                  Pros

                  • Accurate
                  • Compact
                  • Quality Lenses
                  • Strong Construction

                  Cons

                    Best Uses

                    • Astronomy

                    Comments about Celestron Omni 40mm Eyepiece (1.25"):

                    The first eyepiece I use to align the scope. Great for searching targets. Price vs quality makes it a good deal.

                    • Was this a gift?:
                    • No

                    Share this review

                     
                    5.0

                    It's the first eyepiece I grab

                    By Jim

                    from Chicago

                    About Me Avid Adventurer

                    Verified Buyer

                    Pros

                    • Accurate
                    • Quality Lenses
                    • Strong Construction

                    Cons

                      Best Uses

                      • Astronomy

                      Comments about Celestron Omni 40mm Eyepiece (1.25"):

                      I needed a wide angle eyepiece to better locate the alignment stars and it works great. It's the first eyepiece I grab to aim the telescope and it is working for me. it's well constructed and looks good to. It has Plossl design optics and the rubber grip is a plus. I chose it for price and was not disappointed,

                      • Was this a gift?:
                      • No

                      Share this review

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