Baader CCD Narrowband Filterset 50.8mm 2458457
For Full-Frame-CCD, consisting of three 50.4mm diameter filters : H-alpha 7nm, O-III, S-II ( #2458383, #2458437, #2458432) and one H-beta filter 50.8mm diameter (#2458427):
Baader CCD Narrowband Filterset 50.8mm 2458457Please Contact to ask about availability!For Full-Frame-CCD, consisting of:2458383 H-alpha 7nm2458427 H-beta2458437 O III2458432 S IIPlease note: these are 50.8mm unmounted filters.Baader's Premium Narrowband CCD filters are proven to deliver the absolute highest contrast deep sky images in H-Alpha, H-Beta, Oxygen III, and Sulfur-II, take advantage of the absolute shortest exposure times available. Their ultra-narrow bandwidths have extremely high transmissions, while completely rejecting light pollution as well as the important blocking of longer wavelengths.The high optical quality of Baader narrowband filters guarantees no loss in sharpness or contrast. Each substrate is fine-optically polished plane parallel to deliver a smooth and accurate 1/4 wavefront over the entire surface. This special custom polishing operation sets Baader filters apart from the standard commercially precision polished filter substrates used by most other filter manufacturers. Fitted with Baader Low Profile Filter Cell.