The Vixen Optics 4mm SLV 1.25" Eyepiecefrom Vixen Optics 4mm SLV 1.25" Eyepiecefeatures 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.

4mm 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. If I buy this from B&H is the Celestron warranty valid in Canada?

A: Yes this warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized Celestron dealer in the U.S.A. or Canada.

Q: 2. 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: 3. is this eyepiece good for long range birdwatching?

A: I use mine for astronomy with telescopes. But I think 20mm is going to be too wide for most long range birdwatching. For birdwatching I use a Swarovski 95mm spotting scope which has magnifications of 30x - 70x. This 20mm eyepiece only has a magnification of 31x with a 100mm scope. So I'd recommend a much shorter focal-length eyepiece than 20mm. Shorter focal-length eyepieces give greater magnification. So a 10mm might be better for long-range birdwatching. These eyepieces are very nice on telescopes. I assume they're very nice on spotting scopes too.

Q: 4. 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: 5. will this work with a Nexstar 130 SLT?

A: Yes, it will

Q: 6. What is the diameter of the opening in the eyepiece 2.3mm that I can peek through? 2.3mm or ?

A: It is about 0.9 (23mm)

Q: 7. 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.

Q: 8. 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: 9. Hi, is the top of the eye cup moveable from the position show in the photos on this page? Does anyonme know what distance of eye relief is possible withis range? Thanks

A: Eye Relief 16.0 mm Retractable Twist-Up Eyecup

Q: 10. 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