Altair Lightwave 12.5mm LER 1.25" Planetary Eyepiece

Product code: LW-PL55-12.5
£55.00
£45.83 (ex. VAT)
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Product information

The Altair Lightwave TM 12.5mm Planetary Long Eye Relief Eyepiece delivers high power with a short focal length telescope, such as a small refractor, so it's ideal for high power planetary or lunar observing.

The 7-element, 4 group computer optimized design, a very smooth polish, and fully multi-coated optics deliver exceptional contrast and clarity. The 55° apparent field of view is flat, and well corrected.

20mm of Long Eye Relief means you can position your eye 20mm from the eyepiece rear lens, making this is a very comfortable eyepiece for beginners and experienced observers alike, whether or not you're wearing glasses. This helps you spend more time observing fine details on the planets or moon without fatigue.

Apparent field of view 55° degrees
Focal Length 12.5mm
Barrel OD 1.25" with filter thread
Fold-down eyecups & rubber grip
Eye relief 20mm
Design 7 elements in 4 groups
Coatings FMC Fully Multi-Coated
Baffled with blackened lens edges
Precision CNC machined barrel with extremely hard anodising.
Divide the telescope focal length in mm by the eyepiece focal length in mm to get the magnification.

Here's an example magnification table for popular telescopes:

Telescope type:          Focal Length     3mm       5mm       6mm        9mm       12.5mm
Lightwave 66ED-R       400                     133          80           67             44           32
Starwave 70ED F6       420                     140          84           70             47           34
Lightwave 72ED-R       432                     144          86           72             48           35
Wave 80mm EDT F6    480                     160          96           80             53           38
Starwave 102ED F7      715                    238          143        119             79          57
Starwave 110ED F7      770                    257          154        128             86          62
Altair 6" F5 Newtonian  760                    n/a           152        127             84          61
Altair 6" F6 Newtonian  912                    n/a           182        152             101        73
 
Altair staff comment: "We have tested this product extensively, and when you consider the optical quality and the long eye relief feature, this is probably the best value eyepiece set in our range to date. We have been able to keep the cost down by using a simple yet robust barrel, and by incorporating optics which are already a popular proven formula. We recommend them for comfortable enjoyable viewing with all refractors such as the Starwave, Lightwave, Wave Series and Newtonian reflectors. They also perform very well in binoviewers due to the narrow barrel construction and light-weight housing. "

Technical specifications

Brand Lightwave
Product Code LW-PL55-12.5
Weight 0.5kg