Let’s Dive into Konus Plossl 17mm Eyepiece 1.25″ – 1245
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 is a seemingly simple accessory that can significantly enhance your stargazing experience. Manufactured by Konus, a company known for offering accessible astronomy equipment, this eyepiece promises to deliver a wider field of view and improved image clarity compared to basic eyepieces often included with beginner telescopes. It’s designed to be compatible with a range of Konus telescopes, making it an attractive upgrade option for those already invested in the Konus ecosystem.
I needed an eyepiece that would offer a good balance between magnification and field of view. I’d been frustrated with the narrow view provided by my telescope’s stock eyepiece when trying to locate and observe larger celestial objects like nebulae and star clusters. The promise of a wider, more comfortable viewing experience led me to the Konus Plossl 17mm Eyepiece 1.25″ – 1245.
Out of the box, the eyepiece feels surprisingly solid for its price point. The metal barrel inspires confidence, although the rubber eyecup is fairly basic. I compared it to a couple of other Plossl eyepieces in my collection, a Celestron 25mm and an Orion 10mm. The Konus eyepiece appeared to offer a similar level of optical coating quality to the Celestron, but the Orion felt more premium in its construction.
My first impression was cautiously optimistic. I wasn’t expecting a premium experience at this price, but I hoped it would provide a noticeable improvement over the stock eyepiece. It certainly looked the part, and I was eager to test it under the night sky.
Real-World Testing: Putting Konus Plossl 17mm Eyepiece 1.25″ – 1245 to the Test
First Use Experience
I tested the Konus Plossl 17mm Eyepiece 1.25″ – 1245 during a weekend camping trip in the Texas Hill Country, known for its dark skies. I mounted it on my Celestron NexStar 6SE telescope. The seeing conditions were good, with minimal light pollution.
The eyepiece performed reasonably well, providing a noticeable increase in field of view compared to the 25mm eyepiece that came with the telescope. Jupiter and its moons were sharp and clear, and I was able to locate several deep-sky objects, including the Orion Nebula. However, I encountered a significant issue: the eyepiece didn’t fit snugly into the telescope’s focuser.
I discovered what the previous user had said: it wobbled slightly, which was distracting and concerning. I didn’t notice this on the first night, but as I moved between targets, it became extremely annoying.
Extended Use & Reliability
After several weeks of use, the Konus Plossl 17mm Eyepiece 1.25″ – 1245 has held up reasonably well, optically. There are no scratches or damage to the lens coatings. The wobble issue, however, persists.
I’ve resorted to using electrical tape, as suggested by the other reviewer, to create a more secure fit. While this works, it’s not an ideal solution. Cleaning is straightforward – a microfiber cloth and lens cleaning solution are all that’s needed. In comparison to my experience with higher-end eyepieces, the Konus Plossl feels less refined.
I used to be able to swap eyepieces without a second thought, and with this, I have to remember the tape solution! Optically, the images are okay.
Breaking Down the Features of Konus Plossl 17mm Eyepiece 1.25″ – 1245
Specifications
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 features a 17mm focal length and a standard 1.25″ barrel diameter. It’s designed to fit most telescopes with a 1.25″ focuser. The Plossl design utilizes four lens elements to provide a relatively wide apparent field of view, typically around 52 degrees.
- The 17mm focal length offers a medium magnification, ideal for observing a variety of celestial objects.
- The 1.25″ barrel is the most common size, ensuring compatibility with a wide range of telescopes.
These specifications are important because they determine the magnification and field of view you’ll experience through your telescope. A 17mm eyepiece provides a good balance between magnification and brightness, making it suitable for both planetary and deep-sky observing.
Performance & Functionality
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 delivers acceptable optical performance for its price. Images are relatively sharp and clear in the center of the field of view, although some edge distortion is noticeable. Light transmission is adequate, but not exceptional.
The main strength of this eyepiece is its affordability. It provides a decent upgrade over stock eyepieces without breaking the bank. The weakness is the loose fit in some focusers, requiring a workaround for secure use.
It meets expectations for an entry-level Plossl eyepiece, but doesn’t exceed them.
Design & Ergonomics
The eyepiece is constructed from a combination of metal and plastic. The metal barrel feels durable, while the plastic housing is lightweight. The rubber eyecup is comfortable enough, but not particularly luxurious.
There’s no learning curve – it’s a simple plug-and-play accessory. Novice users would greatly benefit, if not for the fitting problem.
Durability & Maintenance
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 should last for many years with proper care. Avoid dropping it and store it in a protective case when not in use. Cleaning requires only a microfiber cloth and lens cleaning solution.
The build quality is acceptable for the price, but not exceptional.
Accessories and Customization Options
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 doesn’t come with any accessories. It’s a standalone eyepiece designed to be used with existing telescopes that accept 1.25″ eyepieces. There are no customization options available.
It’s compatible with standard 1.25″ filters, which can be used to enhance observations of specific celestial objects.
Pros and Cons of Konus Plossl 17mm Eyepiece 1.25″ – 1245
Pros
- Affordable price point: This is a budget-friendly option for upgrading from a stock eyepiece.
- Decent optical performance: Provides relatively sharp and clear images, especially in the center of the field of view.
- Wider field of view: Offers a more immersive viewing experience compared to basic eyepieces.
- Standard 1.25″ barrel: Compatible with a wide range of telescopes.
- Lightweight and easy to use: No complicated setup or adjustments required.
Cons
- Loose fit in some focusers: Requires a workaround (e.g., electrical tape) for a secure fit.
- Edge distortion: Some image distortion is noticeable at the edges of the field of view.
Who Should Buy Konus Plossl 17mm Eyepiece 1.25″ – 1245?
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 is perfect for beginner to intermediate astronomers looking for an affordable upgrade to their telescope’s eyepiece collection. It’s a good option for those who want a wider field of view and improved image clarity without spending a lot of money. It is perfect for astronomy hobbyists on a tight budget.
Those who should skip this product are experienced astronomers who demand exceptional optical performance and build quality. Anyone who owns a high-end telescope and wants to truly maximize its potential should also probably skip this and just get something better.
A must-have modification would be applying electrical tape (as discussed) or finding another solution to ensure a snug fit in the telescope’s focuser.
Conclusion on Konus Plossl 17mm Eyepiece 1.25″ – 1245
The Konus Plossl 17mm Eyepiece 1.25″ – 1245 offers a decent value proposition for its price. While it’s not a high-end eyepiece, it provides a noticeable improvement over stock eyepieces and offers a wider field of view. The fitting issue is a significant drawback, but it can be addressed with a simple workaround.
I would recommend this eyepiece to beginner astronomers who are on a tight budget and looking for an affordable upgrade. Just be aware of the potential fitting issue and be prepared to address it. Overall, it’s a functional and budget-friendly option for enhancing your stargazing experience.