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Description
Pentax Eyepiece SMC XW40-R 40mm 2"Description Pentax SMC XW Revival Eyepieces Pentax re launched two popular eyepiece models: XW 30 and XW 40. The high performance XW series optics incorporates high refraction, extra low dispersion glass elements to produce a well balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil. Main Features: Long focal length makes it
Description
Pentax SMC XW-Revival Eyepieces
Pentax re-launched two popular eyepiece models: XW-30 and XW-40.
The high-performance XW-series optics incorporates high-refraction, extra-low-dispersion glass elements to produce a well-balanced image with minimal aberrations. It is particularly designed to reduce the disturbing blackout effect by effectively compensating the spherical aberration of the pupil.
Main Features:
- Long focal length makes it suitable for observation of nebulae and star clusters
- Clear, comfortable viewing assured by 70° apparent angle of view and 20mm eye relief
- High-grade optics for exceptional image quality with built-in high refractive index ultra-low dispersion lanthanum glass elements
- Original multi-layer coating for outstanding light transmission efficiency
- Advanced light-Shielding technology for improved image contrast
- Weather-resistant* construction for All-Weather viewing (*The XW series features a weather-resistant structure of JIS class 4, it cannot be used underwater)
These new eyepieces are compatible with existing Telescope with a Sleeve Size of 50.8mm (2"), however, please note that the eyepieces are not compatible with Pentax Spotting Scopes (standard Sleeve Size of 31.7mm).
Specifications:
Capacity |
|
| Focal length (mm) | 40 |
| Apparent field of view (°) | 70 |
| Eye relief (mm) | 20 |
| Number of lenses | 6 |
| Number of groups | 5 |
| Connection (to the telescope) | 2" |
| Connector (at camera end) | M48 |
| Coating of optical system | FMC |
| Transmission | 96 (550nm) |
| Field stop (mm) | 46,5 |
Special features |
|
| Adjustable eyepiece cup | yes (rotatable) |
| Optional camera adaptor | yes |
| Filter thread | yes |
| inert gas charge | no |
General |
|
| Type | Eyepiece |
| Type of build | SWA |
| Series | XW |
| Weight (g) | 700 |
| Length (mm) | 117 |
| Diameter (mm) | 76 |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
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