Great project Mark! A wood tubed refractor would be exceptionally cool. Not without challenges, but you are up to them. BTW, the octagonal wood tube for my 4" Newtonian finder turned out pretty good (at least for my woodworking abilities). It should be a working telescope before long. Mat -----Original Message----- From: utah-astronomy-bounces@mailman.xmission.com [mailto:utah-astronomy-bounces@mailman.xmission.com] On Behalf Of Mark Shelton Sent: Tuesday, September 20, 2011 1:09 PM To: Utah Astronomy Subject: Re: [Utah-astronomy] Refractors on the cheap Chuck, I purchased the F10 60" focal length, 6" diameter. I am thinking long term of making a Wood Body for the scope. I have the capabilities of turning a 5 foot tube or so on the wood lathe. Just starting to think this project through. I will be making this most likely next summer or the summer after that. I think a wood turned telescope body would be fun and challenging to do. Mark ________________________________ From: Chuck Hards <chuck.hards@gmail.com> To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Sent: Tuesday, September 20, 2011 10:48 AM Subject: Re: [Utah-astronomy] Refractors on the cheap On 9/20/11, Mark Shelton <woodturninginc@yahoo.com> wrote:
Hi, Thanks for the information.
I ordered the 6" mirror cell and Objectives. I am assuming I only need 1 mirror cell?
Actually it's a lens cell, and both objective elements fit into it. You need one cell for each objective (each objective being one crown and one flint element). These are not push-pull cells, so getting your tubing precisely squared-on is almost a must- not a big deal in practice. It makes collimation much easier. Old-school, tried and true stuff. If you bought more than one objective, you'll need a cell for each. Which f/ratio(s) did you go for? _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php ---------------------------------------------------------------------------- This message and any included attachments are from Siemens Medical Solutions and are intended only for the addressee(s). The information contained herein may include trade secrets or privileged or otherwise confidential information. Unauthorized review, forwarding, printing, copying, distributing, or using such information is strictly prohibited and may be unlawful. If you received this message in error, or have reason to believe you are not authorized to receive it, please promptly delete this message and notify the sender by e-mail with a copy to Central.SecurityOffice@siemens.com Thank you