SharpStar 2.5" f/4.4 Full-Frame Reducer for 94EDPH Refractor ED Refractor The Explore Scientific Nebula City

The Explore Scientific Nebula City Light Suppression (CLS) Filter 2" is designed for observing a broad range of deep sky objects including nebulae and galaxies

3 arcsecond RMS

Dioptrx likely has better multi-coatings than eyeglasses

19mm and 27mm focal lengths

you can leave it attached permanently for spontaneous sky-watching sessions

SharpStar 2.5" f/4.4 Full-Frame Reducer for 94EDPH Refractor ED Refractor The Explore Scientific Nebula CityThis quad full frame reducer was designed for the SharpStar 94EDPH to effectively reduce the scope's focal ratio from 5. 5 to 4. 4. The four element air spaced optical design produces an image circle of 50 mm, great for full frame cameras! The SharpStar 94EDPH Reducer uses M74 threads to connect to the telescope and M48 threads that can receive either a 48 mm T ring for DSLR use or most astro cameras. Back focus is 55 mm. This reducer also includes a