
( Brand: Optolong ), ( Manufacturer Part Number: 11105 ), ( Part Type: Filter ), ( UPC: 971991897068 ), ( Filter Effects: Enhancing )
The Optolong L-eNhance Dual Narrowband Filter, model number 11105, is a high-quality optical filter designed for astrophotography enthusiasts. This 2-inch filter measures 50.8mm in diameter and 2mm thick, making it a perfect fit for most 2-inch eyepieces and telescopes.
The L-eNhance filter is a dual-narrowband filter, meaning it allows two specific wavelengths of light to pass through while blocking all other light pollution. This specific filter is designed to enhance the H-alpha and OIII emission lines, which are commonly found in nebulae and other deep-sky objects. The H-alpha bandpass is centered at 656.3nm, with a width of 10nm, while the OIII bandpass is centered at 501.7nm, with a width of 10nm.
The Optolong L-eNhance filter is made of high-quality optical glass and features multi-coated surfaces to minimize reflection and scattering of light, ensuring maximum transmission and contrast. The filter also includes an anti-reflection coating on the inner side to reduce internal reflections and improve image quality.
The Optolong L-eNhance filter is designed to be easy to use and maintain. It has a 2-inch thread on one side and a 2-inch barrel on the other, allowing it to be easily attached to your telescope or eyepiece. It also comes with a protective cap to keep dust and debris off the filter when not in use.
In summary, the Optolong L-eNhance Dual Narrowband Filter, model 11105, is a versatile and high-performance filter that is perfect for astrophotography enthusiasts. Its dual-narrowband design allows it to enhance the H-alpha and OIII emission lines, while its high-quality optical glass and multi-coated surfaces ensure maximum transmission and contrast. With its easy-to-use design and protective cap, this filter is a must-have for any serious astrophotographer.
Pros of buying Optolong L-eNhance Dual Narrowband Filter 1.25"/2":1. Enhances the visibility of deep-sky objects by blocking light pollution and increasing the contrast.
2. Suitable for both visual and imaging purposes, making it a versatile investment.
3. It is specifically designed to enhance the H-alpha and OIII emission lines, allowing for better observation of nebulae.
4. Made of high-quality materials and coated with an anti-reflection layer, ensuring excellent image quality and minimal light scattering.
Cons of buying Optolong L-eNhance Dual Narrowband Filter 1.25"/2":1. It is a specialized filter, which means it may not be necessary for those who are just starting with astronomy or have limited interest in deep-sky observation.
2. The filter can be expensive compared to general-purpose filters, which may not be an affordable option for beginners or those on a tight budget.
3. The filter may require additional equipment, such as a narrowband camera, to be used effectively, which can add to the overall cost.
Conclusion:The Optolong L-eNhance Dual Narrowband Filter 1.25"/2" is a high-quality product that can significantly enhance the viewing and imaging of deep-sky objects. Its specific design to enhance H-alpha and OIII emission lines makes it an excellent choice for astrophotographers and deep-sky observers. However, it is an expensive investment and may not be necessary for those just starting with astronomy or have limited interest in deep-sky observation. If you are already invested in astrophotography or deep-sky observation and looking to improve your images or observations, this filter is worth considering.
Recommendation:If you are an experienced astrophotographer or deep-sky observer and looking to enhance your images or observations, the Optolong L-eNhance Dual Narrowband Filter 1.25"/2" is a great investment. However, if you are just starting with astronomy or have limited interest in deep-sky observation, it might be better to start with a general-purpose filter and gradually advance to specialized filters as your interest and knowledge grow.
Like new condition. 2 inch Optolong quad enhance filter, used about 5 times, but am selling my Astor gear because I just do not have time to it. No defects or blemishes on the filter.