Providing performance at a reasonable price for most beginners, the Explore Scientific 52° Series 15mm Eyepiece produces a moderate power in most telescopes, and is a perfect addition to your observation arsenal.

Outfitted with a generous 52° apparent field of view, it employs a flat-field lens system that is treated with their proprietary Enhanced Multi-Layer Deposition (EMD) coatings to produce bright and clear views that are flat edge-to-edge. This lens design makes this eyepiece ideal for averted viewing techniques in which you view dim deep sky objects, such as wispy nebulae, indirectly using the portion of the eye that is most sensitive to light.

This model of the 52° series is offered here with a standard 1.25" barrel to make it compatible with the most popular size drawtubes and accessories. The eyepiece is argon-filled and O-ring sealed to be waterproof against condensation and dew and resistant to fogging. A textured collar provides a slip-resistant grip, especially in cold weather or while wearing gloves. A fold down rubber eyecup makes it comfortable and easy to view through, with or without eyewear.

15mm Focal Length    52° Apparent Field of View    1.25" Diameter Barrel    Fully EMD Multi-Coated Optics    Argon-Filled, Water and Fogproof    Slip-Resistant Textured Surface    Fold-Down Eyecup

Related Questions and Answers

Q: 1. Does this fit on Explore Scientific FirstLight 127mm f/15 Maksutov-Cassegrain Telescope ?

A: This will not work on the Scope you referenced.

Q: 2. 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: 3. Does this fit on the ES 102mm?

A: Yes it is compatible with the Explore Scientific 102mm f/7 Essential Apochromatic ED Triplet Refractor.

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. 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: 6. Will this focuser fit an 86.4 OTA?

A: The Explore Scientific Crayford Style Focuser for APO EDT Series Telescopes (2") will only fit Explore Scientific brand APO EDT series telescopes.

Q: 7. Is there an adapter to fit the edge hd 9.25?

A: There is no adapter but you can use this Alpine focuser instead: https://bhpho.to/2H2Fnmp

Q: 8. 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.

Q: 9. What is the thread size on the camera side? Is it M42x0.75 or M48x0.75? Does it include an M48 adapter?

A: On the camera side the threads are M42 for standard T-mounts.

Q: 10. 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.