Question by: Anders G. on Sep 20, 2017 12:55:00 PM |, Our 1.25" filters have a M28.5 male (and M28.5 front female) thread / our 2" filters have a M48 male (and M48 front female) thread. View cart for details. Tax: € 214.94 . Copyright © 1995-2020 eBay Inc. All Rights Reserved. Answer by: Baader Web Team (Admin) on Sep 23, 2020 4:45:00 PM But most likely you can't get rid of it - unless you are using an extensive image processing like our customer Andreas Bringmann, as described in the PDF Halos - no problem! The Baader Blue filter passes virtually all of the H-Beta lines, while the Green filter is able to capture all of the O-III line, without encroaching into the H-Beta line. This arrow indicates which face of the filter should be directed towards the sky (telescope-sided). But: Are Halos really terrible? If you send us your photo with a halo and give us detailed information about the optical setup (camera, reducer, flattener, corrector, filter, telescope with aperture ratio and all their manufacturers and positions) we might find a clue to find the source for the halo. With focal correctors having curved surfaces changing the filter-lens distance could help also. We know from customers that the windows in front of the chips of certain camera models are more likely to produce halos than other cameras. (Size: 407.7 KB) Their ultra steep cutoffs and high transmission, >95% allowed Baader to achieve something no other RGB filter set has, - they are able to effectively separate the important H-Beta and O-III lines. Baader has created excellent LRGB Filters through an extensive coating-stack design and testing program. Always put the more reflective side towards the telescope side. I just bought LRGB 36mm unmounted filters. Please use this product questions module only for technical inquiries and not for general questions such as product availability. A third problem is the lack of space to adjust the distances between the optical elements only slightly - as is the case with almost all primary-focus mirror systems. 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. Putting this "library" into a carry bag will allow you to have all your loose filters … All optical surfaces interact with each other in some way. Question by: Andrew on Jan 2, 2020 3:27:00 AM |.

The sad effect is that we cannot offer other sizes unless the inquired production quantity were in the range of 250 to 500 pc (depending on size) and the tooling rings or square holders will be paid for, which serve to precisely center each individual filter substrate within the rotating calotte inside the coating chamber. Der LRGB-Filtersatz kommt in der gewoht hochwertigen Qualität, die man von Baader Planetarium gewohnt ist. Then we do individually coat these substrates in 500 pc per run as minimum to fill a complete coating chamber, in a way that the coating stack (many times 50+ layers) applied onto each filter won't reach to the very edge of the round or square substrate, so that the coating stack remains completely sealed from all sides. Question will be displayed after moderation. - any personal info - we want to protect your privacy! At the same time they produce a much darker sky background. Because the narrower the filter, the longer the exposure time, the better the contrast. Baader L-RGB-C CCD-Filterset. We're Your Connection To The Manufacturer: The net result is faster, more attentive service from the Manufacturer and an enhanced customer experience.