Orion 5583 1.25-Inch Hydrogen-Beta Eyepiece Filter
[Product Information]- Enter your model numberto make sure this fits.
- Orion's Hydrogen-Beta eyepiece filter makes it possible to view the elusive Horsehead, California, and Cocoon Nebulas in dark skies
- Selective band-pass filter transmits only the hydrogen-beta light these faint nebulas emit
- Filter allows you to observe targets that are considered trophies of visual astronomy
- Best used with a moderate to large aperture telescope and clear, dark skies
- Metal filter cell threaded to fit 1.25" eyepieces and threaded diagonal barrels
