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William Optics 2" 45-deg Erecting Prism Diagonal # D-EP2
| Brand | William Optics |
| Part Number | D-EP2 |
| Availability | available |
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Product Info
Manufacturer Description
William Optics' 2" 45-deg erecting prism will scream to be used with that nice premium refractor of yours! Perfect for daytime observations. No further description is needed: just check it out!
Precision Prism
- Image erecting BAK4 prism with anti-reflection coating.
- High accuracy and high light reflection prism.
- Brass compression ring.
Superior Craftsmanship
- Internally matte blackened and threaded for no internal stray light reflection.
- Threaded for 2" filters.
Ready to Go
- 1.25" adapter with brass compression ring included.
- Large, chromed thumbscrews.
Beautiful Finish
- Entirely aluminum, black anodized.
- Smooth finish.
Features:
- Prism: High quality BAK4 with anti-reflection coating
- Materials: Entirely machined aluminum
- Angle: 45 degree
- Prism clear aperture: 31mm
- 2"-1.25" adapter with brass compression rings
- Weight: 400g
Note that this diagonal is not recommended for astronomical use as the prism edges will create spikes in star images.
Reviews
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Dec 24, 2016
Does exactly what I want it to!
Pros: Cons: Comments:I needed a terrestrial viewer for my Televue 102/Gibraltar combo, this fit the bill perfectly. Very sharp terrestrial viewing with the 35 Panoptic and, especially, the 12MM Nagler eyepieces. No problem with diffraction patterns on terrestrial viewing, but it won’t work for astronomical viewing so well. But I have the Televue Everclear for that! Great quality diagnonal!
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Apr 29, 2012* First Class * Well Made * AAAA++ Item
Pros:Easy to Use,Strong Construction,Quality Lenses,Nicely Built
Cons:None
Comments:This is the nicest 45-deg erecting prism I have ever used. It should cost more, a real steal at the current price.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
roaesch New Member
- Skill Level
- Unknown
- Time with Product
- Unknown
- User Notes:
- Review by Roaesch of Moscow, ID.
Feb 24, 2012Stunning terrestrial viewing.
Pros:Strong Construction,Easy to Use,Good Looking
Cons:Poor night views
Comments:This erecting prism will allow you to use your 2" 100 degree eyepieces for stunning terrestrial viewing! It converts an astronomical telescope into a great terrestrial viewer. It doesn't do well on the night sky though, as the prism delivers a horizontal diffraction spike that is annoying. This is just a fact that comes with an amici prism.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Dec 16, 2011Good for nature study but not astronomy
Pros:Lightweight,Compact,Easy to Use
Cons:Mediocre optical quality,Significant path length
Comments:I would only recommend this product for daytime nature study. The 45 degree angle is great for nearly horizontal viewing, and having a correct left-right image is an advantage compared to a 90 degree diagonal. The only issue here is the extra 125 mm of back focus path length required. With my Explore Scientific 80 mm scope I cannot reach focus with some eyepieces (including the Baader 8-24 mm zoom). I would not recommend this product for general nighttime viewing because the image quality is degraded such that significant aberrations are very noticeable in star images.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Apr 17, 2011William Optics 2" 45-deg Erecting Prism
Pros:Strong Construction,Quality Lenses,Accurate
Cons: Comments:Great product(s) and enjoy very much doing business here. Thanks.
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
Dec 5, 2010William Optics Diagonal
Pros:Great finish,Strong Construction
Cons:None
Comments:I needed a 2" erecting diagonal for my 8" Meade LX-200 SCT type telescope for terrestrial viewing so that the image is not inverted left-to-right. But Meade does not make an erecting type diagonal for 2" eyepieces (only for 1.25" eyepieces). However, the William Optics 2" 45-deg Erecting Prism Diagonal worked great. Since it is a diagonal made for refractor type scope, it needed the Williams Optics SCT Thread Adapter to attach to the back of my SCT telescope. You simply unscrew the 2" noise piece from the diagonal and replace it with the adaptor. This, effectively, converts the diagonal from a refractor type into an SCT type (i.e. which will screw onto the back of my SCT type telescope).
Bottom Line: Would you recommend this item? YesThis review was provided courtesy of AgenaAstro.com
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