http://tech.groups.yahoo.com/group/sct-user/ SCT Users' Mailing List Thu, 09 Jul 2009 18:23:37 GMT Tanveer Gani http://tech.groups.yahoo.com/group/sct-user/message/110529 http://tech.groups.yahoo.com/group/sct-user/message/110529 They're also visible just after 1st and 3rd quarters. After a day or so I find that they become invisible till the full moon when they show up as white dots, Thu, 09 Jul 2009 14:30:50 GMT Leonard E. Mercer http://tech.groups.yahoo.com/group/sct-user/message/110528 http://tech.groups.yahoo.com/group/sct-user/message/110528 Hi, During the last 3 or 4 months I have been working hard on an international project involving 40 participating countries to commemorate the 40th. Thu, 09 Jul 2009 10:23:57 GMT lynol1000 http://tech.groups.yahoo.com/group/sct-user/message/110527 http://tech.groups.yahoo.com/group/sct-user/message/110527 On the two subjects, shelter and rain. Here is the fliptop I built a while ago (pics circa 2002): http://www.geocities.com/lynol1000/greenbox/index.html And Thu, 09 Jul 2009 04:18:36 GMT John Mahony http://tech.groups.yahoo.com/group/sct-user/message/110526 http://tech.groups.yahoo.com/group/sct-user/message/110526 ... Keep in mind that flex that has an effect in an image can easily be too small to be visible. But that does look like a solid mount and a solid focuser, but Thu, 09 Jul 2009 04:10:47 GMT John Mahony http://tech.groups.yahoo.com/group/sct-user/message/110525 http://tech.groups.yahoo.com/group/sct-user/message/110525 ... The baffle tube provides the "even surface" to rotate around. The hose clamp is used to keep the mirror cell forward enough so parts on the back of it Wed, 08 Jul 2009 22:23:23 GMT Robert Piekiel http://tech.groups.yahoo.com/group/sct-user/message/110524 http://tech.groups.yahoo.com/group/sct-user/message/110524 Many people, including my good buddy and former 8th-grade math teacher (Really!) Mike Palermiti at ITE recommend the moon as a true resoloution test of a Wed, 08 Jul 2009 21:37:45 GMT Jaroslaw Pillardy http://tech.groups.yahoo.com/group/sct-user/message/110523 http://tech.groups.yahoo.com/group/sct-user/message/110523 Yes, I tried to tighten the set screws, but it didn't help much. Maybe I was doing something wrong, there are a lot of moving parts in GEG, I will double Wed, 08 Jul 2009 21:11:45 GMT Rod Mollise http://tech.groups.yahoo.com/group/sct-user/message/110522 http://tech.groups.yahoo.com/group/sct-user/message/110522 For the newbies on board: This discussion is mainly of interest to those who want to/like to tinker with telescopes and (maybe) maximize their performance. Wed, 08 Jul 2009 20:49:01 GMT Dennis Persyk http://tech.groups.yahoo.com/group/sct-user/message/110521 http://tech.groups.yahoo.com/group/sct-user/message/110521 Yes, they look like little white dots. Like many features on the moon, they are best observed under full moon conditions. Dennis Wed, 08 Jul 2009 19:54:53 GMT P T Chambers http://tech.groups.yahoo.com/group/sct-user/message/110520 http://tech.groups.yahoo.com/group/sct-user/message/110520 Well, John could have added the reason ;-) you are merely testing to see how the mirror is mounted on the slider. While the "set" of points might be offset a Wed, 08 Jul 2009 18:40:51 GMT gnowellsct http://tech.groups.yahoo.com/group/sct-user/message/110519 http://tech.groups.yahoo.com/group/sct-user/message/110519 Thank you John for your comments. I guess I don't understand why an irregularity or tilt in the hose clamp would not affect the total travel of my laser beam. Wed, 08 Jul 2009 17:55:00 GMT John Mahony http://tech.groups.yahoo.com/group/sct-user/message/110518 http://tech.groups.yahoo.com/group/sct-user/message/110518 ... Thinking about it a little more I realized it's not quite that simple, since as the mirror tilts that will also affect where the laser hits it. This Wed, 08 Jul 2009 17:50:03 GMT Cleon Wells http://tech.groups.yahoo.com/group/sct-user/message/110517 http://tech.groups.yahoo.com/group/sct-user/message/110517 Greg I don't know if this will help you, but check out some of my post on my alignment of my C11 primary mirror. Wed, 08 Jul 2009 17:27:34 GMT John Mahony http://tech.groups.yahoo.com/group/sct-user/message/110516 http://tech.groups.yahoo.com/group/sct-user/message/110516 That doesn't matter. -John Wed, 08 Jul 2009 17:25:56 GMT John Mahony http://tech.groups.yahoo.com/group/sct-user/message/110515 http://tech.groups.yahoo.com/group/sct-user/message/110515 ... He mentioned a hose clamp around the baffle tube below the mirror. ... Details here don't matter. If a sphere is tilted, all parts tilt by the same angle.