Astrocrumb Filter Slide [User Review]  | 09/27/03 | by Michael P. Deneen With a slide, using a filter becomes second-nature, as effortless as focusing.. . . Baader Fringe Killer Filter [User Review]  | 01/09/04 | by Peter Franquet Santa sent me a new skywatcher 80/400 achromat refractor and as I knew it before Christmas, I took informations about it, and about the fact that it suffer. . . Baader Planeterium Moon & Skyglow Filter [User Review]  | 04/16/03 | by David A. Novoselsky Markus just sent me a rather interesting item on the basis of, "test it, and if you like it, keep it and send me a check. If you don't like it, send it bac. . . Baader Planeterium Moon & Skyglow Filter [User Review]  | 04/16/03 | by David A. Novoselsky Markus just sent me a rather interesting item on the basis of, "test it, and if you like it, keep it and send me a check. If you don't like it, send it bac. . . Baader Planeterium Moon & Skyglow Filter [User Review]  | 04/16/03 | by David A. Novoselsky Markus just sent me a rather interesting item on the basis of, "test it, and if you like it, keep it and send me a check. If you don't like it, send it bac. . . Binoscope Company Narrow and Broadband Nebula Filters [User Review]  | 01/16/04 | by John Kagey I have been wanting an 2” 03 filter for sometime now but have not been able to afford one. When Joe Castoro came out with a 2” . . . Filter Performance Comparisons [Article]  | 10/05/06 | by David Knisely The following is a summary report of visual observations of emission nebulae comparing the performance of various filters intended for such objects.. . . Lumicon Multiple Filter Selector [User Review]  | 04/16/03 | by David Knisely For those of us who have more than one filter in our equipment arsenal, it is frequently a hastle (and even a hazard) to keep screwing, unscrewing, or even. . . Mars Filter Comparison [Article]  | 11/18/05 | by Tom Allyn The following is taken from a post in the beginners forum based on an observing report on the morning of 09-08-05. . . Miyauchi UHC Filter Review [User Review]  | 01/15/00 | by Mike Barrs I received the UHC nebula filters last week after a 6-month back-order wait from Anacortes, and I had a chance to test them last night under good observing. . . Orion V-Block Filter [User Review]  | 08/19/03 | by Jay Moynihan Two of my current scopes are achromats. I purchased a 1.25" version of the Orion V-Block filter to try on them. The filter is advertised as a way to cut do. . . Orion's 2" OIII Filter [User Review]  | 02/20/06 | by Terry Alford LPR, or Light Pollution Reduction filters block the most common wavelengths of the light glow we often call “light pollution”. Most of this offendin. . . Sirius Optics Minus Violet Filter [User Review]  | 04/16/03 | by Curt Irwin Over the past year there has been some serious debate within the achromatic refractor community as to how to deal with false color. One company has propose. . . Sirius Optics MV-20 Chromatic Aberration Suppression Filter [User Review]  | 04/16/03 | by Tony Cannata The MV-20 is still relatively new, and many of the dealers may not yet have it on their websites, so you may have to call and ask. Just to get a few th. . . Sirius Optics MV-20 Chromatic Aberration Suppression Filter [User Review]  | 04/16/03 | by Tony Cannata The MV-1 (minus-violet) eyepiece filter, developed by Al Misiuk of Sirius Optics, has been available for some time now and has gained significant popularit. . . Sirius Optics NPC Neodymium Eyepiece Filter [User Review]  | 06/20/03 | by David Knisely Although color filters generally do have some limited applications for planetary viewing in bringing out certain detail, I have never a huge fan of them. I. . . Sirius Optics Variable Filter System (VFS) [User Review]  | 09/28/03 | by Sol Robbins The Variable Filter System, or VFS, is a unique form of interference filter. The filter's glass has coatings deposited on one side of its surface and is un. . . Sirius Optics Variable Filter System (VFS) [User Review]  | 04/16/03 | by Sol Robbins This is one nice little piece of equipment. It has a simple and elegant design. It is anodized aluminum with a flat black finish. This housing has 1.25" in. . . Useful Filters for Viewing Deep-Sky Objects [User Review]  | 04/16/03 | by David Knisely The broad-band "Light-pollution Reduction (LPR) filters are designed to improve the visibility of a variety of Deep-Sky objects by blocking out the common . . . Zeiss Filters [User Review]  | 06/17/03 | by Gary Beal I have been thinking for some time now to share my experiences with the selection of filters designed and manufactured by Zeiss. It has taken some years t. . .