Solidly in the mid-magnification range for most amateur telescopes, the 25mm is a true workhorse for visual observers. If you love deep sky observing, eyepieces in this focal length range not only give healthy increases in magnification, but the contrast enhancement of giving a darker background sky can make all the difference of how galaxies and nebulae appear under suburban skies.
The Explore Scientific 52° LER mid-range focal length eyepiece is excellent flat-field multi-element ocular that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, this eyepiece offer incredible value in a very nice eyepiece.
These eyepieces are the choice for observers wearing glasses – with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The patented EMD-coating produces high contrast images and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don´t have to deal with dirt, fungus or cleansing fluids getting between the lenses. The eyepieces are sealed – this makes sure you will be able to enjoy these eyepieces for many years to come.
Features:
- Large eye distance, large field and great image sharpness
- Excellent viewing position for people with glasses
- Excellent field sharpness even with fast optics
- 52° apparent field of view
- Argon-purging prevents internal fogging, the sealing facilitates cleaning
- Patented EMD-coating to maximize contrast
- Blackened lens edges to avoid reflexes
- All eyepieces of this series are parfocal
- Stainless steel barrel with conical security cutoff
The kit includes:
- 52° eyepiece
- Dust covers
- Protective bag
Specifications | |
Type | parfocal |
Optics material | optical glass |
Optics coating | multicoated EMD (Enhanced Multilayer Deposition) |
Optical design | 4 elements in 2 groups |
Apparent field of view, ° | 52 |
Focal length, mm | 25 |
Eyedistance, mm | 16.4 |
Field stop diameter, mm | 22.7 |
Barrel diameter, in | 1.25 |
Eyepiece barrel diameter, mm | 31.7 |
Waterproof | yes, sealing ring, additional argon purge |
Additionally | rubber foldable eyecup, filter thread |
Марка | Explore Scientific |
Гаранция, години | 2 |
EAN | 0753215766307 |
Размер на опаковката (Д x Ш x В), cm | 14.5x11x10 |
Транспортно тегло, kg | 0.35 |
Оптична схема | 4 елемента в 2 групи |
Диаметър на тръбата на окуляра, in | 1,25” |
Материал на оптиката | оптично стъкло |
Покритие на лещите | многослойно покритие EMD |
Фокусно разстояние, mm | 25 |
Зрително поле, ° | 52 |
Разстояние от очите, mm | 16.4 |
Подходящ за наблюдения, докато носите очила | True |
Диаметър на ограничителя на зрителното поле, mm | 22.7 |
Резба на филтъра | True |
Потъмняване на страничните ръбове | True |
Парфокални | True |
Прочистен с аргон | True |
О-пръстен | True |
Непромокаем | True |
Клас на защита от влага/проникване на вода | дълбочина на потапяне 1 m за до 30 минути |
Чашка на окуляр | гума, сгъваема |
Включени са защитни капачки | True |
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