Taking performance inspiration from the venerable Nagler series, then combining the optical design properties of both an eyepiece and Barlow, the Tele Vue Panoptic 27mm Wide Angle Eyepiece has a 6-element/4-group lens configuration that produces a generous 68° field of view and improved edge-of-field performance, while minimizing size and weight.

This eyepiece produces a relatively low magnification making it ideal for wide-field observations of the universe and most lunar, planetary, and deep-sky needs. It is outfitted with fully multi-coated optics to maximize light transmission, color rendition, and contrast, with blackened lens elements that limit internal light loss and diffraction. Its long 19mm eye relief provides ample room between the lens and eye to prevent accidental contact that can interfere with views. This model has a large 2" barrel diameter to make it even more comfortable to view through, and a textured rubberized grip for sure handling. This eyepiece is parfocal with the 41mm Panoptic eyepiece, requiring little or no refocusing when changing between the two.

27mm Focal Length    Wide 68° Field of View    2" Diameter Barrel    Multi-Coated Optics with Blackened Edges    6-Element/4-Group Lens Configuration    Slip-Resistant Textured Surface    Fold-Down Eyecup    Parfocal with 41mm Panoptic Eyepiece

Related Questions and Answers

Q: 1. What I feel that needs to be better explained about eyepieces and focal lengths as in 6mm or 25mm is that the opening is tiny for 6 mm as compared with 25mm that is wider . The lower the focal length the difficult it gets to train your eye throughthe opening due to its tiny opening. My child experience with my first kid telescope that came with 6mm and 25mm eyepieces told me that 25mm is more enjoyable to use despite lower magnification than the higher magnifying 6mm which is so restrictive in the opening for my eye to keep peeking through as steadiily as I can. I think that a minimum of 10mm is acceptable to me or maybe 12mm. . Am I correct?

A: Yes that is correct. 10 or 12mm will be okay. It also depends on how large of an aperture your scope has. The bigger front opening of the scope the brighter the image.

Q: 2. Good day,I got a Celestron NexStar Evolution 9.25 last week and from the reading it seems that it would benefit greatly from better eyepieces than the supplied stock ones.The telescope has Focal Length 2350 mm and Focal Ratio 10.I'm reading good things about the TeleVue Ethos.I was thinking about getting the Ethos 21mm. Would that be a good choice for my telescope?Also the Ethos SX 4.7mm, but maybe it would be too much power for my telescope? The supplied stock 13mm seems quite shaky as it is, using it from my apartment balcony.For the Ethos 21mm I would need 2 diagonal. Would TeleVue 2 Everbrite Diagonal - Satin be a good choice? Would it fit my telescope?Or maybe the Meade Series 5000 Dielectric Diagonal (2 ) as it seems to be supplied with Schmidt-Cassegrain to 2 adapter?Would there be a big difference between these two diagonals in the picture quality or not really on my telescope?What is the advantage of getting Ethos 21mm and Ethos 10mm versus Ethos 21mm and a 2x Barlow?Any advise/recommendations would be appreciated.Thanks.Regards,Andrej

A: I would personally go with the 21mm Ethos model. The 4.7mm will be overkill I think. You could still use it, but you would notice some shake for sure. I would go with the Meade 5000 Series for the Diagonal that would be a better choice. If you have any other inquiries like this please e-mail us at a href= http://sportoptics@bhphotovideo.com. target= _blank sportoptics@bhphotovideo.com./a

Q: 3. are the Delos series eye pieces par-focal?

A: Yes it is. This is parfocal with Tele Vue Group B eyepieces so no refocusing is required when switching between eyepieces within the group.

Q: 4. Are Televue Ethos eyepieces made in USA? Ie are they NAFTA qualified?

A: The Tele Vue Ethos-SX 3.7mm Ultra Wide-Angle Eyepieces, are made in Taiwan, and are not NAFTA qualified.

Q: 5. What is country of origin ? Tele Vue 13mm Ethos 2 / 1.25 Eyepiece with 100 degree.

A: Taiwan, Republic of China

Q: 6. How will this TV 32 mm plossl work in a Celestron C5 spotting scope?

A: The Celestron C5 127mm f/10 50x Spotting Scope (OTA Only) BH #CEC5SB • MFR #52291 came with a 25mm eyepiece The Tele Vue Plossl 32mm Eyepiece (1.25") BH #TEEPL32P • MFR #EPL-32.0 is a upgrade eyepiece becaus og better glass and coatings on the elements

Q: 7. Is it advisable to use a barlow lense with Televue eyepieces?

A: This is a fairly high powered Eyepiece. I would only go with a Barlow if you had a Scope with a large Objective around 8", and up.

Q: 8. Hi.. Hello,How can I use this eyepiece with Canon Kiss-X2?

A: It should work if you have the correct Canon T-Thread adapter for your Kiss-X2

Q: 9. what is the percentage of distortion.....?

A: It would really all depend on the Telescope you have. Unfortunately I do not have that type of information, my apologies.

Q: 10. How will this lens perform with the Celestron 1100 CPC Goto?

A: @ 2800mm of Focal length on the C11 you would be off the chart at almost 600X magnification. Way too much. Televue recommends not higher than 350X magnification. So the 8mm version would fit the bill better.