TS-Optics 50mm 2" ERFLE eyepiece
This 5 element rich-field eyepiece in Erfle design offers good field definition, a wide field of view and a comfortable viewing position. Its quality coatings prevent reflexions and lead to a bright image.
It is recommended for slower systems like RC, ACF, Schmidt-Cassegrain and EHD telescopes and Achromats from f/7 and longer.
With its apparent field of view of 52°, even larger nebulae become visible. A 150/1200 mm telescope with this eyepiece has a magnification of 24x and a true field of view of more than 2° - this is four times the diameter of the moon!
Further advantages
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Fully multi-coated (FMC)
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Blackened lens edges
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Long eye relief
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2" filter thread
Delivery contents-
TS-Optics 50mm Erfle eyepiece
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Dust caps on both sides
Products specifications
|
Lenses / groups
|
5 / 3 |
|
Field of view
|
52° |
|
Focal length
|
50 mm |
|
Eye relief
|
40 mm |
|
Barrel size / Filter thread
|
2" with filterthread |
|
Eyegard
|
rubber, foldable |
|
Field stop
|
47 mm |
|
Coating
|
multicoating on all glass-air-surfaces |
|
Special
|
blackened lens edges |
|
Type of eyepiece
|
Erfle |
