This is a set of three Optolong 1.25-inch mounted filters: UHC (Ultra-High Contrast), CLS (City Light Suppression), and Moon and Skyglow. best suited for visual use, although the UHC and CLS filters can be used for astrophotography as affordable light pollution filters and to bring out nebulosity and contrast.

I had these immediately inside an iOptron iEFW-15 electronic filter wheel and they were purchased earlier this year from Agena Astro. I am wanting to pivot to monochrome imaging, so I removed them and selling them. If using for astrophotography, I would only recommend using these on a smaller one-shot color sensor such as the Sony IMX533 or IMX585. I was using them one a ToupTek ATR585C, for example (also for sale) and there was no vignetting. Do not purchase this set for an APS-C sized sensor.

These are technically used, but they are practically new. If you would like proof of purchase of additional information and/or pictures, then please feel free to contact me!