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Baader LRGBC CCD Complete Filter Set |
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This new line of Baader LRGBC filters supplements the Baader narrow band emission line filters. These filters are designed for CCD astrophotography and an essential accessory for lunar and planetary observations. The filters allows for recordings with the same exposure time that is considered very important for automated continuous shooting. Baader's LRGBC filters deliver improved color separation and image quality without annoying halos, the Baader Blue filter passes virtually all of the H-Beta and O-III lines, while the Green filter is able to capture all of the O-III line, without encroaching into the H-Beta line, in addition, the Green and Red filter passbands nearly touch, leaving only a sharp notch to block out the primary Mercury/Sodium light pollution line at 580nm. The high transmission everywhere else delivers the shortest combined exposures possible with every detector. The Baader O-III perfectly isolates the two doubly ionized oxygen lines (496 and 501nm), through a very sharp and narrow bandpass 8.2 nm wide!, the narrowest of any O-III filter, while the Baader SII will block all unwanted sodium light pollution and longer wavelengths. Baader's H-Alpha filters ultra narrow bandwidths with extremely high transmission rates enables high-contrast deep sky images. The high optical quality of the 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. Baader Planetarium filters are truly designed to be stacked and combined due to the high optical quality and highly efficient anti-reflection multicoatings. Premium quality coating is applied that offers optimum light transmission. |
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