At a Glance
15mm
Focal Length
82°
Apparent FOV
18mm
Eye Relief
1.25"
Barrel Size
Score Breakdown
Overview
The Celestron Luminos 15mm is a solid mid-range eyepiece that delivers genuinely wide 82-degree apparent field of view, making it a useful choice for observers who want to frame large objects like open clusters, nebulae, or the full lunar disk. At 15mm focal length, it sits in a sweet spot between low-power sweeping and moderate magnification, and how it performs for you will depend on your telescope's focal length. The six or seven element fully multi-coated optical design produces sharp, contrasty views with good light transmission, though some observers with fast focal ratio scopes may notice slight edge softening, which is common in wide-field eyepieces at this price point.
The parfocal design across the Luminos lineup is a genuine practical advantage, meaning swapping between focal lengths during a session requires little or no refocusing. Build quality is respectable for the price. The rubber grip, retractable eyecup, and threaded barrel for filters all add up to an eyepiece that feels well thought out for regular use.
At $119, it is not a budget purchase, but it competes reasonably against other 82-degree eyepieces in its class, and Celestron's two-year warranty provides some added peace of mind.
Key Features
- 82-degree apparent field of view gives noticeably wider views than standard 68-degree eyepieces
- Fully multi-coated optics improve contrast and light transmission for sharper detail
- Parfocal with other Luminos eyepieces, reducing time spent refocusing when switching magnifications
- Retractable eyecup accommodates both eyeglass and non-eyeglass wearers
- Threaded barrel accepts standard 1.25-inch filters for moon, nebula, or light pollution use
- Rubber grip remains secure in cold conditions or when wearing gloves
- Two-year US warranty backed by Celestron's domestic support team
Specifications
| Focal Length | 15mm |
| Apparent FOV | 82° |
| Eye Relief | 18mm |
| Barrel Size | 1.25" |
| Design | Modified Nagler |
| Elements/Groups | 7/4 |
| Series | Luminos |
| Coating | Fully Multi-Coated |
| Waterproof | No |
Popular Telescopes for This Eyepiece
Sky-Watcher FlexTube 300 SynScan
100x / 3.0mm exit pupil / Dobsonian
Celestron NexStar 130SLT
43x / 3.0mm exit pupil / Newtonian
Sky-Watcher FlexTube 300P
100x / 3.0mm exit pupil / Dobsonian
Celestron 114LCM
67x / 1.7mm exit pupil / Newtonian
Amazon Reviews
Celestron's Luminos series eyepieces are, as noted in other reviews, both very heavy and moderately expensive, They are, however, worth it. I purchased the 15, 10, and 7 mm eyepieces (all 1.25 inch barrels) for there 82 degree field of view for my 9.25 SCT, and the difference between the stock eyepi...
For most (the casual user), and especially the beginner, this Celestron Luminos series eyepiece is what you should use (for under $100.00)! It is of much higher quality than the lesser eyepieces, that usually accompany a new telescope. Plus besides the higher quality lenses they use, the Luminos ser...
Amazing eyepiece. My celestron zoom eyepiece is good but this wide angel one is awesome. The celestron zoom eye-piece is like looking through a paper towel tube compared to this one. The eye relief is very close to the lens, your eye almost has to touch for a good view. Eye glass wearers should remo...
Try this eyepiece in our calculators
See how this eyepiece performs with any telescope.