Plossl Eyepieces - Set of 4 - 1 Tele Vue (8mm), 3 Celestron (15mm / 25mm / 40mm)
[Excellent Condition]
I purchased these 4 Plossl Eyepieces in 2006 to use with my Celestron C-11 SCT. They are all in excellent condition with crystal-clear lenses and no marks or scratches. Plossl eyepieces are a great low-priced option, good for either saving a little money or for using in conditions that might damage your higher-end optics.
The 8mm Tele Vue eyepiece is a 4-element design that features full multi-coatings, blackened lens edges and internal anti-reflection threads to give high contrast and very high detail. According to the manufacturer, this helps focus faint stars into perceptible points and allows those with undriven telescope mounts to gaze longer before repositioning the image.
The 15mm and 25mm Celestron Omni eyepieces are 4 element symmetrical Plossl design. Features include multi-layer coatings, blackened lens edges, and two-step anodization to minimize internal reflections and maximize contrast and light transmission.
The 40mm eyepiece is an older version of the Celestron E-Lux eyepiece design, but it has a 1.25" barrel rather than the newer 2" E-Lux eyepieces. I'm sorry, but I don't have many technical details about this eyepiece.
As mentioned above, all 4 of these eyepieces are in excellent condition, with very clear glass and no marks or scratches.
Manufacturer's Specifications:
Eyepiece #1:
- Brand: Tele Vue
- Focal Length: 8mm
- Barrel Size: 1.25" (31.7mm)
- # of elements: 4
- Apparent Field of View: 50°
- Eye Relief: 6mm
- Filter Thread: Standard 1.25" Filter Thread (M28.5 x 0.6)
Eyepiece #2 & #3:
- Brand: Celestron Omni
- Focal Length: 15mm & 25mm
- Barrel Size: 1.25" (31.7mm)
- # of elements: 4
- Apparent Field of View: 50°
- Eye Relief: 13mm
- Filter Thread: Standard 1.25" Filter Thread (M28.5 x 0.6)
Eyepiece #4:
- Brand: Celestron E-Lux (earlier 1.25" version)
- Focal Length: 40mm
- Barrel Size: 1.25" (31.7mm)
- # of elements: unknown
- Apparent Field of View: unknown
- Eye Relief: unknown
- Filter Thread: Standard 1.25" Filter Thread (M28.5 x 0.6)
A note about the photographs:
Taking pictures that look through these eyepieces took a lot of experimentation to get clear, focused images. I didn't "photoshop" these images, except to crop them and to add the text labels. In the end, I decided to include two images looking through each eyepiece. The first image of each pair includes backlighting, while the second does not. I'm hoping this will help you tell the difference between eyepiece details and reflections of my light sources.
Photo Credit:
Public domain image of the Carina Nebula, photographed by the James Webb Space Telescope and sourced from NASA, at
https://science.nasa.gov/mission/webb/multimedia/images/