Baader H-Alpha 35NM Narrowband CCD FilterH Alpha 35nm CCD Filter 1. 25" or 2" Baader's new H Alpha passfilter enables high contrast deep sky images of H II regions. Its medium 35nm FWHM bandwidth is ideal for interline CCD cameras. The lower sensitivity of interline transfer CCDs benefits from the more efficient 35nm FWHM. The sharp bandpass and > 90% high efficiency coatings make the Baader H Alpha filter superior to the common colored glass based filters, all at a reasonable price. The

We emphasize that this test setup is not recommended for imitation

31mm - 36mm

The same high optical quality and features as the other Baader filters ensures the highest contrast and sharpest images possible

Each eyepiece features a four-element design with a 52º apparent field of view

Five eyepieces and a Barlow lens equals ten different magnifications to choose from

Threaded for 1

Out of the Box

Matches the image seen through Refractor or Maksutov-Cassegrain telescopes with star diagonal

solar and lunar

The 15 mm Kellner eyepiece offers a nice medium magnification view in most telescopes

Provided about half the radius of the pattern on our masks is included in “clear aperture”

wide field views of 2” eyepieces with the Celestron 2” Eyepiece & Filter Kit