First Impressions of Celestron EclipSmart Universal Solar Filter, 75mm To 100mm
The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm promises a safe and affordable way to observe the sun, eclipses, and sunspots using existing optics. Celestron is a reputable name in the astronomy world, so my initial expectation was of a decent quality product at a reasonable price point. This filter is designed to fit a range of lens sizes, making it a versatile option for telescopes, spotting scopes, and DSLR cameras.
I’ve always been fascinated by solar events, but the specialized equipment often comes with a hefty price tag. That’s why I was looking for a budget-friendly solution that would allow me to safely view the upcoming solar eclipse with my existing spotting scope. The claim of ISO 12312-2:2015(E) compliance immediately caught my attention, as safety is paramount when observing the sun.
Upon receiving the filter, I was pleased with the lightweight design. It felt surprisingly sturdy for its weight. The adjustable side panels seemed like a practical solution for achieving a snug fit on different sized optics.
I considered other options, including dedicated solar telescopes and more expensive glass filters, but the Celestron EclipSmart Universal Solar Filter, 75mm To 100mm‘s versatility and price point were major selling points. It offered the potential to use it with multiple devices, making it a more economical choice. My initial feeling was cautiously optimistic, hoping it would live up to its safety claims and provide a decent viewing experience.
Real-World Testing: Putting Celestron EclipSmart Universal Solar Filter, 75mm To 100mm to the Test
First Use Experience
My first test was during a clear, sunny afternoon using my 80mm spotting scope. I set it up in my backyard, carefully following the instructions to attach the Celestron EclipSmart Universal Solar Filter, 75mm To 100mm. The adjustable panels and rubber band system initially felt a bit fiddly, but I was able to get a secure fit after a few tries.
The immediate difference was striking – the bright glare of the sun was completely eliminated, revealing a soft, orange disc. I was able to clearly see a couple of small sunspots, which was impressive. No issues arose during the initial viewing session, and I felt confident in the filter’s safety.
Extended Use & Reliability
After several weeks of using the Celestron EclipSmart Universal Solar Filter, 75mm To 100mm on different occasions, including a partial solar eclipse, it has held up reasonably well. The cardboard frame shows no signs of significant wear. The rubber band, however, is starting to show signs of degradation from sun exposure and stretching, which is in line with Celestron‘s recommendations for frequent replacement.
Cleaning the filter is simple – a gentle wipe with a soft cloth removes any dust or smudges. Comparing this to my previous experiences with welding glass (used very carefully and indirectly in the past), the Celestron EclipSmart Universal Solar Filter, 75mm To 100mm offers a significantly safer and more convenient viewing experience. It also provides a much clearer and sharper image.
Breaking Down the Features of Celestron EclipSmart Universal Solar Filter, 75mm To 100mm
Specifications
- The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm is designed for optics with an outside diameter of 75mm to 100mm. This makes it versatile enough for many small to medium-sized telescopes, spotting scopes, and camera lenses.
- It weighs only 1.5 oz, making it incredibly lightweight and easy to handle. This minimal weight won’t affect the balance of your equipment.
- The filter material conforms to the ISO 12312-2:2015(E) international safety standard. This certification is crucial for ensuring safe solar observation.
- It features a reusable storage bag. This helps to protect the filter when it is not in use.
- The color is OD (Olive Drab). This provides a distinct visual cue, and delivers a soft orange image of the sun.
The filter’s ISO certification is the most critical specification because it guarantees that the filter blocks harmful ultraviolet (UV) and infrared (IR) radiation, as well as reduces intense visible light to safe levels. The lightweight design ensures that it doesn’t add unnecessary strain to the telescope or camera mount.
Performance & Functionality
The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm performs its primary function exceptionally well: providing a safe view of the sun. It effectively blocks harmful radiation while allowing enough light to reveal sunspots and eclipse details. The orange tint creates a natural-looking solar image that is comfortable to view for extended periods.
The main drawback is the rubber band attachment system, which can be a bit cumbersome, and requires replacement bands. A more robust and adjustable clamping mechanism would be a welcome improvement. Overall, the filter meets expectations for its price range, offering a safe and accessible way to observe the sun.
Design & Ergonomics
The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm features a simple and functional design. The cardboard frame is lightweight yet reasonably sturdy, and the adjustable side panels accommodate a range of optic sizes. While the rubber band system works, it lacks the refinement of more expensive filters.
There is virtually no learning curve – you simply adjust the panels, secure the band, and attach it to your optic. A more secure and easier to adjust design would be beneficial.
Durability & Maintenance
The cardboard frame should last for several years with careful handling and storage. The rubber bands, however, will need periodic replacement. Cleaning requires only a gentle wipe with a soft, lint-free cloth.
Avoid getting the filter wet or exposing it to extreme temperatures to maximize its lifespan. The filter is easy to maintain.
Accessories and Customization Options
The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm comes with a reusable storage bag and basic instructions. There are no included accessories.
While there are no specific customization options for the filter itself, it can be used with various telescopes, spotting scopes, and DSLR cameras within the specified size range. For DSLR use, Celestron recommends adding a sunshade to the camera lens for a more secure fit, and also recommends low-tack painters tape to secure the filter. You can also use #32 rubber bands for replacement as Celestron recommends that you change out the bands frequently. The compatibility with different optics makes it a versatile addition to any amateur astronomer’s or photographer’s toolkit.
Pros and Cons of Celestron EclipSmart Universal Solar Filter, 75mm To 100mm
Pros
- Affordable price makes solar observation accessible to beginners.
- ISO 12312-2:2015(E) certified for safe solar viewing.
- Versatile design fits a range of optic sizes (75mm to 100mm).
- Lightweight and easy to use.
- Provides a clear, orange-tinted image of the sun.
Cons
- Rubber band attachment system is fiddly and requires replacement bands.
- Cardboard frame is not as durable as more expensive metal or plastic filters.
Who Should Buy Celestron EclipSmart Universal Solar Filter, 75mm To 100mm?
The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm is perfect for beginner astronomers, eclipse enthusiasts, and educators looking for an affordable and safe way to observe the sun. It is also ideal for photographers who want to experiment with solar photography using their existing DSLR equipment. This filter is a great option for those who want to view solar events without investing in expensive dedicated solar telescopes.
This product might not be the best choice for serious amateur astronomers who require higher-quality, more durable filters with finer detail resolution. Also, if you need a filter that fits outside of the 75-100mm range, you should skip this product. A sturdier filter with a more robust mounting system would be preferable for professional use.
A must-have accessory would be a pack of replacement #32 rubber bands. Low-tack painter’s tape is recommended for securing to optics.
Conclusion on Celestron EclipSmart Universal Solar Filter, 75mm To 100mm
The Celestron EclipSmart Universal Solar Filter, 75mm To 100mm offers an excellent value proposition for anyone interested in safely observing the sun without breaking the bank. While the rubber band attachment system and cardboard frame have limitations, the filter’s ISO certification and clear image quality make it a worthwhile investment for beginners and casual observers. The price is definitely justified given the safety and versatility it provides.
I would personally recommend this filter to anyone starting their journey into solar astronomy or photography. It offers a safe, affordable, and accessible way to witness the wonders of our sun. Get yours today and prepare for the next solar eclipse!