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 |
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Amazon Reviews
I PURCHASED THE 7mm, 10mm, 15mm And i use them with 2 different Newtonian Telescopes: I was Gifted a Celestron 76mm Newtonian Telescope by my Wife, and it came with 2 Celestron Plossl EyePieces 10 & 20mm... Passion took over and shortly after i got my hands on another Newtonian Telescope, 150mm that...
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...
Very good affordable eyepiece. I have several Luminos eyepiece and they are all good quality.
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