The Vixen Optics 10mm SLV 1.25" Eyepiece for Astronomyfrom Vixen Optics 10mm SLV 1.25" Eyepiece for Astronomyfeatures a 20mm eye relief with a twist-up eyecup for comfortable viewing with or without eyeglasses. Designed with seven elements in four groups, the fully multicoated optics minimizes light reflection for bright and sharp images. Its all-metal body has a 1.25" aluminum barrel, with an anti-roll rubberized grip.

10mm Focal Length    20mm Eye Relief    Fully Multicoated    Twist-Up Eyecup    Anti-Roll Body    7-Elements, 4-Groups    1.25" Aluminum Barrel

Related Questions and Answers

Q: 1. i have a range of spotting scopes and have just bought a televue 85 scope i want to see the birds clearly that my 82 leica 65 leica and 65 vanguard can't at long range so this eyepiece only gives me the same as them am i correct in that ?

A: Well it depends on the Focal Length of your scope. That is what determines the power of this eyepiece technically. You take the Focal Length of your Scope and divide it by the Millimeter of the Eyepiece.

Q: 2. What magnification would this be on a 100mm m2 Celestron spotting scope?

A: 540mm focal length divided by 18mm eyepiece = 30x Sincerely, Garrett at Celestron

Q: 3. I have a Pentax 65 ED II spotting scope and Pentax SMC XW 10mm eyepiece. If I wanted a greater field of view, should I get a bigger eyepiece 20mm or smaller one 5mm?

A: Magnification in telescopes and spotting scopes is calculated by division. So a 20mm eyepiece will have a greater angle of view than a 10mm or 5mm.

Q: 4. Will this work on an Meade ETX 70 focuser?

A: It will not.

Q: 5. Is the eye cup removable and is there thread under the eyecup?

A: No, the eye cup is not removable and there is no threads. Sincerely, Garrett at Celestron

Q: 6. Can it be used with Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope?

A: Yes, the Celestron X-Cel LX 7mm Eyepiece (1.25"), can be be used with the Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope.

Q: 7. Can this be used with Celestron 102 AZ telescope ?

A: Yes, the Celestron X-Cel LX 7mm Eyepiece (1.25"), can be used with the Celestron 102 AZ telescope.

Q: 8. will this work with a Nexstar 130 SLT?

A: Yes, it will

Q: 9. I have a Polaris 114eq-d. Will this eye piece adapter work to convert it to 1.5?It has the 1.5 hole. Just don't know about the threads matching. Thanks

A: Yes, we are using this currently on the same model I believe. and it works great!

Q: 10. Is this eyepiece threaded at 42mm on the top to attach cameras like the XW eyepieces are?

A: The Pentax SMC 8-24mm Zoom Eyepiece (1.25") BH #PEEP2060X • MFR #70509 does no have any threads for additional add on.