
( Brand: Orion ), ( Manufacturer Part Number: 5516 ), ( Part Type: Expansion Air Filter ), ( Filter Type: Filter Kit ), ( Size: Inches )
The Orion 5516 Secondary Expansion Filter Set is a must-have accessory for any serious astronomer. This set includes a set of five 1.25-inch filters, each designed to enhance and enhance specific celestial objects or phenomena.
The first filter in the set is the Orion UltraBlock H-alpha filter. This filter is specifically designed to bring out the hydrogen emission lines in nebulae, allowing you to see these objects in stunning detail. The filter blocks out all other wavelengths of light, ensuring that only the hydrogen emission lines reach your eyes or camera sensor.
The second filter in the set is the Orion UltraBlock OIII filter. This filter is perfect for viewing emission nebulae that emit oxygen emission lines, such as the Orion Nebula and the Swan Nebula. Like the H-alpha filter, the OIII filter blocks out all other wavelengths of light, allowing you to see the oxygen emission lines in brilliant detail.
The third filter in the set is the Orion L-echelle planetary filter. This filter is designed to enhance the details of planets and the Moon. It uses a narrowband design to block out all light except for specific wavelengths, allowing you to see fine details and structures that would otherwise be lost in the glare.
The fourth filter in the set is the Orion UHC filter. This filter is designed to enhance the contrast of deep-sky objects, such as nebulae and galaxies. It uses a narrowband design to block out all light except for the hydrogen-alpha and oxygen-III emission lines, allowing you to see the faintest details and structures.
The fifth and final filter in the set is the Orion Narrowband filter. This filter is designed to enhance the contrast of nebulae and other deep-sky objects. It uses a narrowband design to block out all light except for specific emission lines, allowing you to see the faintest details and structures.
Each filter in the Orion 5516 Secondary Expansion Filter Set is made of high-quality optics and is coated with a multi-layer anti-reflection coating. This ensures that the filters are free of ghosting, flaring, and other optical distortions, allowing you to see the most detailed and accurate images possible.
The filters are also threaded to fit standard 1.25-inch eyepieces and cameras, making them easy to use and swap out as needed. The set also includes a protective case to keep the filters clean and dust-free when not in use.
In conclusion, the Orion 5516 Secondary Expansion Filter Set is a must-have accessory for any serious astronomer. With its five high-quality filters, each designed to enhance specific celestial objects, this set will allow you to see the faintest details and structures in the night sky. Whether you're a beginner or a seasoned pro, the Orion 5516 Secondary Expansion Filter Set will help you take your astronomical observations to the next level.
Pros of buying Orion 5516 Secondary Expansion Filter Set:1. Wide variety of filters: The set includes a range of 1.25-inch filters, including a light pollution filter, a nebula filter, a UHC filter, and a solar filter.
2. High-quality optics: Orion is known for its high-quality optics, and these filters are no exception. They are made with multi-coated glass for maximum light transmission and minimal reflection.
3. Compatibility: The filters are compatible with a wide range of Orion telescopes and other 1.25-inch filters.
4. Durable construction: The filters are made with durable materials and are designed to withstand regular use.
Cons of buying Orion 5516 Secondary Expansion Filter Set:1. Cost: The set is not cheap, and some users may find the price prohibitive.
2. Limited range: While the set includes a range of filters, it does not cover all possible applications. For example, it does not include a lunar filter or a planetary filter.
3. No case included: The filters do not come with a case, which means they may need to be stored separately to prevent damage.
Conclusion:If you are looking for high-quality, multi-coated filters for your Orion telescope or other 1.25-inch filters, the Orion 5516 Secondary Expansion Filter Set is a great option. The set includes a wide range of filters, and the high-quality optics are sure to enhance your viewing experience. However, the cost may be a deterrent for some users, and the lack of a case is a minor inconvenience. Overall, if the cost is not a concern, this set is highly recommended.
Orion secondary expansion filter set - four 1.
Random fascinating fact: an average person normally blinks 20 times a minute, but when using computer he she only 7 minute. Fast free shipping. 25 filters Orion secondary expansion filter set - four excellent condition with original box.