· Get a Cloudy Nights T-Shirt · Submit a Review / Article    Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Equipment Discussions >> ATM, Optics and DIY Forum Previous   Index   Next   Flat   polaraligned sage Reged: 12/26/08 Posts: 226 Loc: P. R. of New Jersey Re: Thick mirrors       07/03/09 07:34 AM Edit   Reply   Quote   Quick Reply:   Open back cellular is clearly the best substrate out there. You are going to pay the price for that fast cooldown time. I have a 28" currently being cast and it will be 2x stiffer than 2" mono, and have 4x the surface area. The face is .3" thick. I have no doubt that once they reach equilibrium, which should be fast, they will outperform even the ULE materials. Scott Post Extras       Entire thread Subject Posted by Posted on Thick mirrors astrolabio49 07/03/09 03:21 AM Re: Thick mirrors John Carruthers   07/03/09 06:19 AM Re: Thick mirrors polaraligned   07/03/09 07:34 AM Re: Thick mirrors mark cowan   07/04/09 02:47 AM Re: Thick mirrors *DELETED* polaraligned   07/04/09 07:56 AM Re: Thick mirrors mark cowan   07/04/09 02:51 PM Re: Thick mirrors Mike Lockwood   07/07/09 03:02 PM Re: Thick mirrors kfrederick   07/05/09 08:22 AM Re: Thick mirrors Stahi   07/05/09 11:28 AM Re: Thick mirrors mark cowan   07/05/09 07:15 PM Re: Thick mirrors Stahi   07/05/09 09:59 PM Re: Thick mirrors *DELETED* polaraligned   07/06/09 07:55 AM Re: Thick mirrors mark cowan   07/06/09 09:59 PM Re: Thick mirrors dave b   07/07/09 01:25 AM Re: Thick mirrors Houdini   07/07/09 06:44 AM Re: Thick mirrors Darenwh   07/07/09 07:02 AM Re: Thick mirrors polaraligned   07/07/09 07:32 AM Re: Thick mirrors dave b   07/06/09 12:36 PM Re: Thick mirrors *DELETED* polaraligned   07/06/09 06:11 PM Re: Thick mirrors dave b   07/06/09 06:21 PM Re: Thick mirrors polaraligned   07/06/09 07:35 PM Re: Thick mirrors Houdini   07/06/09 07:57 PM Re: Thick mirrors *DELETED* polaraligned   07/10/09 08:24 AM Re: Thick mirrors *DELETED* Houdini   07/10/09 09:21 AM Re: Thick mirrors Don W   07/10/09 04:30 PM Re: Thick mirrors Houdini   07/10/09 08:51 PM Re: Thick mirrors mark cowan   07/10/09 10:45 PM Re: Thick mirrors kfrederick   07/11/09 07:07 AM Re: Thick mirrors kfrederick   07/11/09 08:57 AM Re: Thick mirrors dave b   07/11/09 05:44 PM Re: Thick mirrors mark cowan   07/12/09 10:56 PM Re: Thick mirrors polaraligned   07/14/09 07:27 AM Re: Thick mirrors mark cowan   07/14/09 01:08 PM Re: Thick mirrors polaraligned   07/14/09 01:27 PM Re: Thick mirrors mark cowan   07/14/09 04:32 PM Re: Thick mirrors dave b   07/13/09 02:29 AM Re: Thick mirrors mark cowan   07/13/09 03:39 AM Re: Thick mirrors kfrederick   07/13/09 09:56 AM Re: Thick mirrors mark cowan   07/13/09 04:08 PM Re: Thick mirrors Owen   07/14/09 03:24 AM Re: Thick mirrors JohnH   07/14/09 12:15 PM Re: Thick mirrors kfrederick   07/12/09 05:55 AM Re: Thick mirrors polaraligned   07/06/09 08:54 PM Re: Thick mirrors Cary   07/06/09 08:22 PM Re: Thick mirrors JohnH   07/07/09 01:05 PM Re: Thick mirrors JohnH   07/07/09 01:17 PM Re: Thick mirrors Olivier Biot   07/07/09 01:29 PM Re: Thick mirrors JohnH   07/07/09 03:59 PM Re: Thick mirrors kfrederick   07/07/09 05:12 PM Re: Thick mirrors BluewaterObserva   07/07/09 09:34 PM Re: Thick mirrors Owen   07/08/09 04:57 AM Re: Thick mirrors mark cowan   07/08/09 03:55 PM Re: Thick mirrors Cary   07/08/09 04:02 PM Re: Thick mirrors mark cowan   07/08/09 04:11 PM Re: Thick mirrors dave b   07/08/09 12:01 PM Re: Thick mirrors BluewaterObserva   07/08/09 12:51 PM Re: Thick mirrors dave b   07/06/09 07:50 PM Re: Thick mirrors polaraligned   07/06/09 08:35 PM Re: Thick mirrors Houdini   07/06/09 08:58 PM Re: Thick mirrors dave b   07/04/09 11:47 AM Re: Thick mirrors Owen   07/03/09 03:41 AM Extra information 7 registered and 9 anonymous users are browsing this forum. 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