http://tech.groups.yahoo.com/group/Baader-Planetarium/ Baader Planetarium Mon, 09 Nov 2009 06:34:20 GMT greg_prichard_cpc_1100 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/103 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/103 Hi all, I have noticed while using this filter that I get a grain in the form of parallel lines when boosting the signal in images taken with my DSLR. Tue, 23 Jun 2009 23:12:42 GMT Bruce Huston http://tech.groups.yahoo.com/group/Baader-Planetarium/message/101 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/101 Thanks much for the info, Mike. I will probably be getting the Semi-APO. - Bruce ... they were introduced, first the MSG, then the Fringe-Killer, then the Tue, 23 Jun 2009 01:08:58 GMT Mike Swanson http://tech.groups.yahoo.com/group/Baader-Planetarium/message/100 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/100 Hi Bruce, I actually have all three of these filters - I got them years apart as they were introduced, first the MSG, then the Fringe-Killer, then the Tue, 23 Jun 2009 00:43:48 GMT Wyatt Earp http://tech.groups.yahoo.com/group/Baader-Planetarium/message/99 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/99 Hey Bruce, Consider reading up on Michael Swanson's excellent site for reviews on filters: http://www.nexstarsite.com/EquipmentReviews.htm Cheers, Wyatt From: Tue, 23 Jun 2009 00:15:43 GMT Bruce Huston http://tech.groups.yahoo.com/group/Baader-Planetarium/message/98 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/98 I have a Celestron NexStar 102SLT (4 inch f/6.5 achromatic). I am considering getting the Baader Fringe Killer filter to get rid of chromatic aberration. Mon, 25 May 2009 23:42:38 GMT carol_date http://tech.groups.yahoo.com/group/Baader-Planetarium/message/97 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/97 Could somebody please give me the web-link(s) and model numbers (prices?) of the rotating filter holder from Baader that will hold the 1.25 inch and 2-inch Mon, 25 May 2009 23:39:58 GMT carol_date http://tech.groups.yahoo.com/group/Baader-Planetarium/message/96 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/96 BACKGROUND: I want to use the red, green and blue (8nm-wide) Baader Astronomy filters for the image-stacking technique from the "Microscopy Today" magazine. Wed, 11 Mar 2009 02:30:15 GMT Mark Hunt http://tech.groups.yahoo.com/group/Baader-Planetarium/message/95 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/95 Hello All, I'm new to the group. I will be using the following equipment: Tak 130 OTA on a AP1200 mount, Tak 102 as guide scope with SBIG remote guide head, Mon, 23 Feb 2009 07:49:28 GMT ghb959 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/94 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/94 Hi everyone; I join this group to see if a F 3 to F 3.4 Coma Corrector could be made for large Newtonian 25 inch and bigger. This is the next big step in Fri, 13 Feb 2009 18:05:52 GMT patrickduis http://tech.groups.yahoo.com/group/Baader-Planetarium/message/93 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/93 Thanks, I once looked with only the filter (so no telescope) towards the sun without problem, so mine must be of the 5ND type then. ... able to ... type ... Thu, 12 Feb 2009 21:56:46 GMT Michael Swanson http://tech.groups.yahoo.com/group/Baader-Planetarium/message/92 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/92 Hello, Turns out it is pretty easy to tell. Take the filter outside on a sunny day. If you have the photographic type film (3.8 ND), you will be able to see Thu, 12 Feb 2009 09:27:47 GMT patrickduis http://tech.groups.yahoo.com/group/Baader-Planetarium/message/91 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/91 Hi, a few months ago I bought a fairly cheap (around 40 euro's) 2nd hand (self built) solar filter for my 8" scope. When I look through the filter towards the Mon, 22 Dec 2008 11:56:26 GMT mineralman55 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/90 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/90 ... Actually, a better choice is one of the kitchen aids for jar- unscrewing. They are very thin and flexible and conform to any filter or eyepiece shape. Sat, 20 Dec 2008 03:50:12 GMT Michael Swanson http://tech.groups.yahoo.com/group/Baader-Planetarium/message/89 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/89 Hi Patricio, Good point about the focal distance. But rather than a 2" extension tube, it is probably easier just to use a 2" to 1.25" adapter. By the way, Wed, 17 Dec 2008 22:59:07 GMT parbacia http://tech.groups.yahoo.com/group/Baader-Planetarium/message/88 http://tech.groups.yahoo.com/group/Baader-Planetarium/message/88 Another trick to unscrew a filter: use a computer mouse pad. Grab the the eyepiece with the filter facing downward against the pad and while pressing the