| Country of Origin | China |
|---|---|
| Manufacturer Warranty | 3 Years |
| Brand | Unbranded |
Check the listing for details. Optolong L-eXtreme 2" Mounted 7nm Dual Narrowband Filter Telescope Accessory. Condition: New, Made in China. Listed at 219.84 USD. The convenience and cost effectiveness of this filter allows amateurs to image a rich emission nebulas, even in bright, light pollution skies. It isolates the H-Alpha, and Oxygen III nebula emission lines so that the contrast and signal-to-noise ratio between nebulae were maximized.
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