Adding two models to high-performance eyepiece
"smc PENTAX XW" series：
Achieves the widest 85° apparent field of view in the XW series
smc PENTAX XW16.5
smc PENTAX XW23
TOKYO, November 10, 2022 －RICOH IMAGING COMPANY, LTD. is pleased to announce the launch of the high-performance eyepieces "smc PENTAX XW16.5" and "smc PENTAX XW23" for astronomical telescopes.
Main Features
- 1. Apparent field of view of 85°, the widest viewing angle in the XW series, suitable for observing nebulae and star clusters
- 2. A new optical system with 7 elements in 5 groups that surpasses the conventional XW series to obtain sharp star images all the way to the edge of the field of view
- 3. Original multi-layer coating for outstanding light transmission efficiency
- 4. Advanced light-shielding technology for improved image contrast
- 5. Weather-resistant* construction for All-Weather viewing
*The XW series features a weather-resistant structure of JIS class 4 *. It cannot be used underwater.
Specifications
| smc PENTAX XW16.5 | smc PENTAX XW23 | |
|---|---|---|
| Focal Length | 16.5mm | 23.0mm |
| Lens construction [Elements/Groups] |
7/5 | 7/5 |
| Eye Relief Figures in parentheses are the distance from the viewing rubber |
20mm(12mm) | |
| Apparent Angle of View | 85° | 85° |
| Coating* | Multi coating | |
| Weatherproof | JIS class 4 equivalent (splash-proof) | |
| Sleeve size | 50.8mm | 50.8mm |
| Diameter & Length (minimum) |
76mm×142mm | 76mm×125mm |
| inch | 3.0in. x 5.6in. | 3.0in. x 4.9in. |
| Weight (+/- 5%) | 745g | 770g |
| onz | 26.3 oz. | 27.2 oz. |
| Accessories | Eyepiece lens cap, Objective lens cap | |
*Partial coating applied to laminated optical element groups
| About Ricoh |
Ricoh is empowering digital workplaces using innovative technologies and services that enable individuals to work smarter from anywhere.
With cultivated knowledge and organizational capabilities nurtured over its 85-year history, Ricoh is a leading provider of digital services, information management, and print and imaging solutions designed to support digital transformation and optimize business performance.
Headquartered in Tokyo, Ricoh Group has major operations throughout the world and its products and services now reach customers in approximately 200 countries and regions. In the financial year ended March 2022, Ricoh Group had worldwide sales of 1,758 billion yen (approx. 14.5 billion USD).
For further information, please visit www.ricoh.com