The Baader Planetarium LRGB 65 mm Square CCD Filter Set conveys enhanced color separation and picture quality without irritating halos. Baader has made fabulous CCD filters through an expansive coating-stack outline and testing program. Baader has partnered with the world's leading thin film coating manufacturer to produce transmission curves that border on the ideal. Basically - Baader's LRGB anti-reflection filters convey enhanced pictures for your astro-imaging! Unfortunately, their remarkable improvements will probably cause numerous astro-imagers to re-take pictures of their favorite celestial objects. This set contains four square 65 mm unmounted filters: one each of red, green, blue colors, plus a UV/IR-Cut filter (luminance). Each of the LRGB 65 mm square filters are 3 mm thick.
Their ultra steep cutoffs and high transmission, >95% permits Baader to accomplish something no other RGB filter set has - they can successfully isolate the vital H-Beta and O-III lines. The Baader Blue filter passes essentially almost all of the H-Beta lines, while the Green filter can catch all of the O-III line, without infringing into the H-Beta line. None of the light is wasted by either filter. In this way, O-III is represented as it should be, a teal (blue-green) color, and H-Beta is captured solely in the blue. This novel degree of separation is achieved, along with high transmission for both lines. 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 580 nm. The high transmission everywhere else delivers the shortest combined exposures possible with every detector.
The high optical nature of the Baader narrowband filters ensures no loss in sharpness or contrast. Every substrate is fine-optically polished plane parallel to deliver a smooth and precise 1/4 wavefront over the whole surface. Every filter is individually blocked and polished instead of cut out from a larger section of glass. The special custom polishing operation sets Baader filters apart from other filter manufacturers.
|Name||Baader - 65mm Square LRGB Filters - UV/IR Cut L-Filter|
|Custom Stock Status||Ships in 3-5 Days|
|Filter size||65 mm Square|