Explore Scientific engineered this 62° Series 20mm Eyepiece with a 5-elements in 3-groups lens configuration, anti-reflection fully multi-coated optics, and 14.8mm eye relief. This model of the 62°-series comes with a 1.25" diameter barrel that fits into common drawtubes, and accepts most eyepiece filters. The housing is argon-filled and O-ring sealed to be water and fog-proof, and has a textured ring on the exterior to give it a secure grip.

20mm Focal Length    62° Field of View    1.25" Diameter Barrel    14.8mm Eye Relief    Fully Multi-Coated Optics    Argon-Filled, Water and Fog-proof    Slip-Resistant Textured Surface

Related Questions and Answers

Q: 1. The Sky-Watcher Evo 100ED and the Sky-Warcher 80ED both have Synta 96mm OT attachments for a focuser. Is this a 96mm focuser?

A: The Explore Scientific APO EDT Series Rack & Pinion Focuser (2") is not a 96" focuser.

Q: 2. Can this be used on the Sky-Watcher Evo 80ED?

A: The Explore Scientific APO EDT Series Rack & Pinion Focuser (2") BH #EXFOCEDAPORP • MFR #FOCEDAPO-RP can be used with the Sky-Watcher EvoStar 80mm f/7.5 Doublet APO Refractor

Q: 3. 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: 4. I have a celestron SE8, and would like to know if this would be a good choice for deep space viewing, and what accessories I would need to make this work?

A: Sure, you would need to upgrade into this Celestron 90-Degree Mirror Diagonal (2") for SCT Scopes BH #CEDM2S • MFR #93527 Being a 28 mm, the eyepiece would provide 72x . Note that the included 8se eyepiece is a 25mm, so in theory it would be similar to the magnification. Usually a much lower power is used, which would provide a wider view, like , Explore Scientific 62° Series 40mm LE Eyepiece (2") B&H # EXEPWP6240LE MFR # EPWP6240LE-01 or Tele Vue Plossl 55mm Eyepiece (2") B&H # TEEPL55P MFR # EPL-55.0

Q: 5. What is the Outside Diameter of this focuser where it hooks to the telescope? Wanting to replace a bad focuser and need one 3.5" in diameter for the connection.

A: The Diameter of the Explore Scientific APO EDT Series Rack & Pinion Focuser (2") is 3 inches, so it won't fit a 3.5 ".

Q: 6. How many elements, in how many groups?

A: It has six elements in four groups.

Q: 7. Can this be used on the Sky-Watcher Evo 100ED?

A: Yes this would be compatible with your Sky-Watcher EvoStar 100mm f/9 Doublet APO Refractor (OTA only).

Q: 8. If it will fit a Sky-Watcher Evostar 72" telescope?

A: No, it will not. Designed for specific Explore Scientific telescopes.

Q: 9. Will it work with Meade ETX 125

A: Yes it is compatible with the Meade ETX 125.

Q: 10. How much weight it can carry?

A: It is designed to support a substantial mount of weight. What you should be more concerned about is the total amount ow weight that is on your mounting system and tripod.