The Pentax PR 65 Spotting Scope Meets The UfL APM 24MM Eyepiece
After waiting month's for the APM Ultra Flat Field 24mm 65 Degree Eyepiece to be shipped to me from AgenaAstro.com, it finally arrived today. It could not have come at a better time, with me having on hand another Pentax ED spotting scope. I first read about this eyepiece months back on some of the well known Astronomy web sites, where it got pretty much great reviews across the board. I originally had second thoughts, would it focus correctly ? Would it provide the full AFOV(65) with its very large FieldStop of 30.2mm ?, because this is the first low power(15.4x) fixed 1.25" eyepiece I have ever tested having a FieldStop that big on any of the Pentax 65 ED spotting scopes ...... I was quite relieved not only when it focused correctly but also showing no signs of cut off issues with the little Pentax 65 prisms. As you can see from the pictures this eyepiece is huge. It fits the Pentax PR 65 like a glove, with the base of the APM eyepiece diameter fitting on the Pentax eyepiece locking collar having pretty much the same diameter. The eyepiece itself slides easily into the 1.25" locking collar on the Pentax. As you can see in the 2nd picture with its rubber eyecup folded down, its ocular lens is huge. I could not find any reviews on any of the Astronomy web sites regarding its use for terrestrial daytime viewing. The daylight here in this part of the world(3:30 PM EST) with snow flurys/freezing rain is not the best viewing hours for even this low power(15.4) fixed eyepiece but what I am seeing is a very impressive clear/sharp view. With its huge ocular eye lens, combined with the large amount of eye relief it provides, makes this a very easy/comfortable eyepiece to use. I will post back later when I get a better day with some daylight, my opinion of just how well the Pentax PR 65 spotting scope/APM UFL 24mm eyepiece combination performs durring daytime terrestrial viewing.
After waiting month's for the APM Ultra Flat Field 24mm 65 Degree Eyepiece to be shipped to me from AgenaAstro.com, it finally arrived today. It could not have come at a better time, with me having on hand another Pentax ED spotting scope. I first read about this eyepiece months back on some of the well known Astronomy web sites, where it got pretty much great reviews across the board. I originally had second thoughts, would it focus correctly ? Would it provide the full AFOV(65) with its very large FieldStop of 30.2mm ?, because this is the first low power(15.4x) fixed 1.25" eyepiece I have ever tested having a FieldStop that big on any of the Pentax 65 ED spotting scopes ...... I was quite relieved not only when it focused correctly but also showing no signs of cut off issues with the little Pentax 65 prisms. As you can see from the pictures this eyepiece is huge. It fits the Pentax PR 65 like a glove, with the base of the APM eyepiece diameter fitting on the Pentax eyepiece locking collar having pretty much the same diameter. The eyepiece itself slides easily into the 1.25" locking collar on the Pentax. As you can see in the 2nd picture with its rubber eyecup folded down, its ocular lens is huge. I could not find any reviews on any of the Astronomy web sites regarding its use for terrestrial daytime viewing. The daylight here in this part of the world(3:30 PM EST) with snow flurys/freezing rain is not the best viewing hours for even this low power(15.4) fixed eyepiece but what I am seeing is a very impressive clear/sharp view. With its huge ocular eye lens, combined with the large amount of eye relief it provides, makes this a very easy/comfortable eyepiece to use. I will post back later when I get a better day with some daylight, my opinion of just how well the Pentax PR 65 spotting scope/APM UFL 24mm eyepiece combination performs durring daytime terrestrial viewing.
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