1. Product Overview
The Astromania 1.25"/2" 3.5mm 70-Degree Super Wide Angle (SWA) Eyepiece is designed to provide high-contrast, clear images for astronomical observation. Featuring advanced ED optics and a wide 70-degree field of view, this eyepiece enhances your viewing experience by offering a broad perspective of the night sky and detailed planetary views.
Image 1.1: Overview of the Astromania 3.5mm SWA Eyepiece highlighting its 70° field of view, 3.5mm focal length, 20mm eye relief, 1.25"/2" barrel size, multi-coated lenses, and ED element.
2. Key Features
- ED Element High-Contrast Optics: The integrated ED (Extra-low Dispersion) element ensures high contrast, brilliance, clarity, and depth of color in the image, making fine details visible.
- 70-Degree Wide Angle: Experience a vast field of view, allowing observation of extended objects in their entirety. This wide angle is designed for comfortable and immersive viewing.
- Long Eye Relief: A generous 20mm eye relief provides comfortable viewing for all users, including those wearing corrective lenses, ensuring the entire field of view is accessible.
- Dual Barrel Size: The eyepiece features both 1.25" and 2" barrels, eliminating the need for additional adapters when switching between different focuser sizes.
- Astrophotography Compatibility: A thread located under the rotatable rubber eyecup allows for the attachment of an M43 to T-2 adapter (not included) to connect an SLR or compact camera for astrophotography.
- Multi-Coated Lenses: Optical coating technology reduces light reflection and refraction, ensuring optimal transmission and brightness for a clear field of view.
- Solid Construction: Made from aluminum metal oxide and high-grade rubber, ensuring durability and longevity.
Image 2.1: Visual representation of the enhanced clarity and contrast provided by the built-in ED lens element, particularly noticeable in lunar observations.
Image 2.2: Illustration of the eyepiece's multiple optical lens design, which contributes to a larger and clearer field of view.
Image 2.3: Depiction of the 20mm eye relief for comfortable observation and the premium materials used in the eyepiece's construction.
3. Installation and Compatibility
The Astromania SWA Eyepiece is designed for easy installation and broad compatibility with various telescopes.
3.1 Attaching to a Telescope
This eyepiece features both 1.25" and 2" barrel sizes. Simply insert the appropriate barrel into your telescope's focuser. The 2" barrel is located directly above the 1.25" barrel. Secure the eyepiece using the focuser's thumbscrew.
Image 3.1: The eyepiece's versatile design allows it to be used with both 1.25" and 2" telescope focusers without needing separate adapters.
3.2 Astrophotography Setup
For astrophotography, remove the rotatable rubber eyecup to reveal an M43 thread. A suitable M43 to T-2 adapter (not included) can then be attached, allowing you to connect your SLR or compact camera to the eyepiece for capturing celestial images.
Image 3.2: The eyepiece is equipped with an M43 thread for connecting a camera via an M43 to T-2 adapter, enabling astrophotography.
4. Operation
4.1 Adjusting Eye Relief
The rubber eyecup is rotatable and detachable. Adjust it to your preferred height for optimal viewing comfort and to block stray light. If wearing glasses, you may detach or fold down the eyecup to utilize the full 20mm eye relief.
4.2 Using Filters
The eyepiece features inner threads for attaching standard 1.25" or 2" astronomical filters (not included). Screw the desired filter into the barrel before inserting the eyepiece into the focuser.
Video 4.1: This video demonstrates the features of the SWA 70 eyepieces, including ED optics for comfortable observing and enhanced clarity.
Video 4.2: A detailed look at the 1.25"/2" 17mm 70 Degree Super Wide Angle (SWA) Eyepiece, showcasing its design and functionality.
Video 4.3: This video highlights the ultra-wide 6-elements in 4 groups design and fully multi-coated optics of Astromania eyepieces.
5. Care and Maintenance
5.1 Cleaning the Lens
To remove dirt or fingerprints from the lens, use a microfiber cloth and gently wipe in a circular motion. Avoid using rough cloths, paper products, or unnecessary rubbing, as these can scratch the lens surface and cause permanent damage.
5.2 Storage
When not in use, store the eyepiece in its protective foam-lined box with dust caps securely in place to prevent dust accumulation and physical damage.
Image 5.1: Proper cleaning technique for the eyepiece lens using a microfiber cloth.
Image 5.2: The eyepiece comes with a cleaning cloth and dust caps, packaged in a completely foam-lined box for multi-protection.
6. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 6.25 x 3.8 x 3.63 inches |
| Item Weight | 16 ounces |
| ASIN | B018FUMI7E |
| Item Model Number | SKU_AM_SWA1R270305 |
| Brand | Astromania |
| Special Feature | Compact Design, Long Eye Relief |
| Objective Lens Diameter | 22 Millimeters |
| Color | Black |
7. Troubleshooting
- Unclear Image: Ensure the telescope is properly focused. Check for dust or smudges on the eyepiece lenses and clean them carefully as described in the maintenance section.
- Limited Field of View: Verify that the eyepiece is fully inserted into the focuser and secured. Adjust the rubber eyecup for optimal eye placement.
- Difficulty Attaching Camera: Ensure you have the correct M43 to T-2 adapter for your camera model. The adapter is sold separately.
8. Warranty and Support
For warranty information, technical support, or any inquiries regarding your Astromania eyepiece, please refer to the contact information provided with your purchase or visit the official Astromania website. Keep your proof of purchase for warranty claims.