http://tech.groups.yahoo.com/group/sct-user/ SCT Users' Mailing List Sun, 08 Nov 2009 13:38:02 GMT Christopher Go http://tech.groups.yahoo.com/group/sct-user/message/111434 http://tech.groups.yahoo.com/group/sct-user/message/111434 It was mostly cloudy today. I had a 15 minute break in the clouds. I was able to cool my OTA today for an hour so seeing was excellent! But transparency was Sun, 08 Nov 2009 08:33:10 GMT Christopher Go http://tech.groups.yahoo.com/group/sct-user/message/111433 http://tech.groups.yahoo.com/group/sct-user/message/111433 I was cloudy this afternoon but it cleared during early evening. I wasn't able to cool my OTA so my images are a bit spotty at times. The GRS can be seen in Sun, 08 Nov 2009 05:07:02 GMT Noel Carboni http://tech.groups.yahoo.com/group/sct-user/message/111432 http://tech.groups.yahoo.com/group/sct-user/message/111432 ... Makes sense. Thanks for the detail. Did you evaluate whether the Telextender curves the field any? The Hyperstar 3 on a C11 curves the corners of an Sun, 08 Nov 2009 05:02:52 GMT samirkharusi http://tech.groups.yahoo.com/group/sct-user/message/111431 http://tech.groups.yahoo.com/group/sct-user/message/111431 Hi Noel, If the seeing (or the lens' aberration/diffraction limits) warrants a finer image scale than is available without a tele-extender. Basically that's Sun, 08 Nov 2009 01:59:01 GMT Don D'Egidio http://tech.groups.yahoo.com/group/sct-user/message/111430 http://tech.groups.yahoo.com/group/sct-user/message/111430 Greg, I used the Dow Grease on my C11 to help alleviate a severe focus shift problem and it removed about 90% of the focus shift. What I did was to use a fair Sun, 08 Nov 2009 00:26:26 GMT gnowellsct http://tech.groups.yahoo.com/group/sct-user/message/111429 http://tech.groups.yahoo.com/group/sct-user/message/111429 I hope the dow corning works out for you. I tried it and ended up removing it and going back to Slick 50. Didn't do a thing. Maybe I should have really Sat, 07 Nov 2009 21:45:54 GMT Noel Carboni http://tech.groups.yahoo.com/group/sct-user/message/111428 http://tech.groups.yahoo.com/group/sct-user/message/111428 ... Given the original image seems to have more detail and better quality, one has to ask: Why would you want to add a tele-extender? -Noel _____ From: Sat, 07 Nov 2009 18:11:06 GMT rich.shippee http://tech.groups.yahoo.com/group/sct-user/message/111427 http://tech.groups.yahoo.com/group/sct-user/message/111427 Ok I will look for that grease and give it a try. As for how I know its the mirror flop I have done a few things. What was happening was when imaging my Sat, 07 Nov 2009 16:27:49 GMT Chris Peterson http://tech.groups.yahoo.com/group/sct-user/message/111426 http://tech.groups.yahoo.com/group/sct-user/message/111426 Regarding the grease: don't give up on this until you try replacing the existing baffle grease with Dow High Vacuum Silicone grease. In many cases, it makes Sat, 07 Nov 2009 16:02:29 GMT rich.shippee http://tech.groups.yahoo.com/group/sct-user/message/111425 http://tech.groups.yahoo.com/group/sct-user/message/111425 Sorry if these have been asked a ton before. One question is mirror flop. I was wondering how others have handled this issue. So far I have tried thicker Sat, 07 Nov 2009 10:54:16 GMT samirkharusi http://tech.groups.yahoo.com/group/sct-user/message/111424 http://tech.groups.yahoo.com/group/sct-user/message/111424 Read all about it... http://www.pbase.com/samirkharusi/image/119126944/original Sat, 07 Nov 2009 10:05:24 GMT Christopher Go http://tech.groups.yahoo.com/group/sct-user/message/111423 http://tech.groups.yahoo.com/group/sct-user/message/111423 Seeing and excellent this evening. I had to cut my session short because clouds rolled in. The SEB looks quiet here. An SED can be seen and the EZ looks very Fri, 06 Nov 2009 14:57:39 GMT majikthyze http://tech.groups.yahoo.com/group/sct-user/message/111422 http://tech.groups.yahoo.com/group/sct-user/message/111422 No, the top of the 3.29" threads is not the same thing as the rear-most surface of the sct back. The sct back adapter adds another half inch. If this isn't Fri, 06 Nov 2009 14:44:13 GMT ancient.sull http://tech.groups.yahoo.com/group/sct-user/message/111421 http://tech.groups.yahoo.com/group/sct-user/message/111421 Wonderful news! Thanks Drew S. Fri, 06 Nov 2009 13:02:58 GMT dduncanvt http://tech.groups.yahoo.com/group/sct-user/message/111420 http://tech.groups.yahoo.com/group/sct-user/message/111420 Hello Andre: I think we are saying the same thing...?? Your 5.25" is "from the rear-most surface of the SCT back" (top of the 3.29" threads?) and I take that