1¼" Hß

The OIII and Hβ are more typical representative offerings available from Astronomik's product line but with the tight specification tolerances and additional assurance of Tele Vue's testing guarantee.

The Hβ filter passes the aqua colored hydrogen-beta emission lines found in the Horsehead, California, and other hydrogen emitting nebulae. It is effective for viewing objects that take up the entire field — even when using our wide-angle eyepieces.