mike spoonerPosted By Dominic Di Leo |
Posts Made By: Dominic Di Leo
February 5, 2003 12:45 PM
Forum:
Telescope Making
July 18, 2003 11:09 AM
Forum:
Telescope Making
Mirror Aluminum FinishesPosted By Dominic Di Leo |
Mike
What type of metal are you working with?
Dominic DiLeo
What type of metal are you working with?
Dominic DiLeo
July 19, 2003 07:10 PM
Forum:
Telescope Making
Secondary mirror positionPosted By Dominic Di Leo |
Have you already read Nils Olaf Carlin's piece on collimation procedure?
July 19, 2003 07:18 PM
Forum:
Telescope Making
Secondary mirror positionPosted By Dominic Di Leo |
Here it is
http://www.atmsite.org/contrib/Carlin/collimation/
http://www.atmsite.org/contrib/Carlin/collimation/
July 31, 2003 12:12 PM
Forum:
Telescope Making
How to attach those triangles in a mirror cell?Posted By Dominic Di Leo |
Here is a chart of support calculations By Mark Holm using an FEM program called "PLOP". You will see that even a properly configured three point support cell is just adequate for your mirror specs.
http://www.telerama.com/~mdholm/atm/cells/index.html
http://www.telerama.com/~mdholm/atm/cells/index.html
August 1, 2003 05:07 AM
Forum:
Telescope Making
coating disaster good newsPosted By Dominic Di Leo |
They are giving you a matched and finished set?
August 4, 2003 01:01 PM
Forum:
Telescope Making
could anyone direct me to a printable protractorPosted By Dominic Di Leo |
http://astro.umsystem.edu/atm/search.html
There are several references to what you seek.
There are several references to what you seek.
September 6, 2003 01:08 PM
Forum:
Equipment Talk
What are "phase coated" binoculars?Posted By Dominic Di Leo |
An easy demonstration of effective phase cancellation can be observed on the surface of a soap bubble. The film thickness will vary and as the bubble thins from evaporation you will see areas that have no reflectance at all. These are perfect zones of cancellation and you would think there are holes in the bubble.
December 21, 2003 02:30 PM
Forum:
Telescope Making
Mirror Cell Triangle >> folding sides >> cheap !!Posted By Dominic Di Leo |
Thanks for the tip, Sam. What drawing program are you using?
January 17, 2004 02:02 PM
Forum:
Telescope Making
Forgot the name: Newt with cage in the middle ?Posted By Dominic Di Leo |
Serrieur truss? Equal sag on either side of center box, thus keeping optics aligned and, disregarding the change in focal length.
Funding Member
