http://groups.yahoo.com/group/bigdob/ Big dobsonian telescope users. Tue, 11 Jun 2013 15:56:16 GMT Fabio Falchi CieloBuio http://groups.yahoo.com/group/bigdob/message/20395 http://groups.yahoo.com/group/bigdob/message/20395 Dear all, does anyone have expereince in using mirrorless camera at the prime focus of a newton with Feather Touch plus SIPS Tele-Vue coma corrector? I was Mon, 03 Jun 2013 12:42:02 GMT George Andrew http://groups.yahoo.com/group/bigdob/message/20394 http://groups.yahoo.com/group/bigdob/message/20394 I would also do a search in the bigdob Yahoo group archive. I'm sure you can find a lot on info on this. I have heard of several companies doing bad things Mon, 03 Jun 2013 11:35:04 GMT John Vogt http://groups.yahoo.com/group/bigdob/message/20393 http://groups.yahoo.com/group/bigdob/message/20393 Be careful with those clowns, they damaged my 32” due to their stupidity and refusal to listen to my instructions & cautions in handling a cellular mirror. Mon, 03 Jun 2013 07:05:08 GMT Barrie http://groups.yahoo.com/group/bigdob/message/20392 http://groups.yahoo.com/group/bigdob/message/20392 We are trying to get a 36" mirror recoated. It is currently at EMF in Ithaca, NY. When they stripped off the old coating, they found that a large portion of Sun, 12 May 2013 13:07:15 GMT doug.broun http://groups.yahoo.com/group/bigdob/message/20391 http://groups.yahoo.com/group/bigdob/message/20391 I agree about the need to use good rubber seals on any opening. What about a spoiler fitted to the roof at the rear of the trailer? This is used on some Fri, 05 Apr 2013 04:35:04 GMT John Mahony http://groups.yahoo.com/group/bigdob/message/20390 http://groups.yahoo.com/group/bigdob/message/20390 Well, that's how they keep clean rooms clean. If there was nothing in front of the trailer then the leading face of the trailer would experience high Fri, 05 Apr 2013 03:09:29 GMT o1bigtenor http://groups.yahoo.com/group/bigdob/message/20389 http://groups.yahoo.com/group/bigdob/message/20389 I know that my trailers (one dry van another a modified reefer van) don't collect any dust and that includes when they are driven on gravel roads! Darald ... Fri, 05 Apr 2013 02:02:52 GMT Jeff Huston http://groups.yahoo.com/group/bigdob/message/20388 http://groups.yahoo.com/group/bigdob/message/20388 Yeah thanks, I was thinking about that after I had posted it this morning ... I guess the question is, does it work? -Jeff To: bigdob@yahoogroups.com From: Fri, 05 Apr 2013 00:10:09 GMT John Mahony http://groups.yahoo.com/group/bigdob/message/20387 http://groups.yahoo.com/group/bigdob/message/20387 ... Wouldn't that be positive pressure? -John Thu, 04 Apr 2013 22:13:31 GMT o1bigtenor http://groups.yahoo.com/group/bigdob/message/20386 http://groups.yahoo.com/group/bigdob/message/20386 Hmmmmmmmmmmmmmmmmmmmmmmm - - not sure how to put this but its sort of straightforward but its not cheap grade you are looking for but it is possible! A little Thu, 04 Apr 2013 17:10:37 GMT walter kennison http://groups.yahoo.com/group/bigdob/message/20385 http://groups.yahoo.com/group/bigdob/message/20385 having built a couple of trailers and modified a bunch,,, the leaf spring suspension is going to be a rough ride because the two halves are coupled together. I Thu, 04 Apr 2013 16:51:29 GMT Attilla http://groups.yahoo.com/group/bigdob/message/20384 http://groups.yahoo.com/group/bigdob/message/20384 Instead of "load balancing pivot" I should have written "leaf spring equalizer". Here is a web page about using a rubberized shock-absorbing equalizer for Thu, 04 Apr 2013 16:25:19 GMT Attilla Danko http://groups.yahoo.com/group/bigdob/message/20383 http://groups.yahoo.com/group/bigdob/message/20383 I was advised to use torsion bar suspension axles for my 25 inch dob . Alternatively you might consider retrofitting shocks. There is also a shick absorbing Thu, 04 Apr 2013 13:01:08 GMT Jeff Huston http://groups.yahoo.com/group/bigdob/message/20382 http://groups.yahoo.com/group/bigdob/message/20382 So, I have a 6x10' enclosed trailer... it does the job, hauling my big scope, but it has a couple of flaws which I hope to address.1. The suspensions 2,000lb+ Wed, 03 Apr 2013 20:24:10 GMT Attilla http://groups.yahoo.com/group/bigdob/message/20381 http://groups.yahoo.com/group/bigdob/message/20381 The poster of the link spam has been banned. I have also deleted quotations of the spamming link. Please do not quote messages containing link spam. moderator.