Celestron 93430 Luminos 7 mm eyepiece 🔭

This 7 mm eyepiece from Celestron's Luminos line brings a wide apparent field and bright, detailed views for observers aiming to study planets and compact deep-sky objects. With an 82° apparent field and full multi-coating according to the manufacturer, this eyepiece suits visual astronomy where edge-to-edge sharpness and contrast matter.

Key Points

The Luminos eyepiece features an 82° apparent field that gives more immersive views compared with standard narrow-field oculars. The retractable eyecup pops up for eye relief when you need it and folds down for comfortable use with glasses. A rubber grip helps keep the eyepiece secure in cold conditions or when wearing gloves, and the aluminium barrel is anodised for durability. Note that filter threads are included on the barrel for attaching planetary or light-pollution filters.

Technical Specifications

• Name: Celestron 93430 Luminos 7 mm eyepiece
• Apparent field of view: 82°
• Construction: Fully multi-coated optics
• Barrel finish: Anodised aluminium with rubber grip
• Eyecup: Retractable design
• Filter threading: Yes

Advantages

The wide apparent field reduces the need to re-centre objects during observation and offers a more panoramic view of star clusters and nebulae. Fully multi-coated lenses help maintain high contrast and minimise internal reflections, which is particularly helpful for lunar and planetary detail. The inclusion of filter threads adds versatility for observers who use colour or narrowband filters.

Usage Recommendations

For best results, pair this 7 mm eyepiece with telescopes that deliver medium to high focal ratios where edge performance and comfortable eye relief are desirable. The retractable eyecup allows quick switching between eyeglass and non-eyeglass use. Consider using lightweight filters threaded to the barrel when observing bright planets or to reduce skyglow during urban sessions.

Note that, according to the manufacturer, the 82° field may require slightly more precise collimation and alignment on some telescope mounts to fully appreciate the edge-to-edge sharpness.