Massed Produced MirrorsPosted By Cary Chleborad |
In recent months I have tested a signifcant number of production mirrors from inexpensive newtonian / dobsonian telecopes. I've examined at least one mirror from most of the "big" sellers, all of the results being fairly similar. Generally good enough for an inexperienced buyer to not be dissapointed but definitly should be better.
I've posted an article on my web site discussing quality criteria and sample data from one of these mirrors I just examined and refigured.
http://www.WodenOptics.com/cloudy.html
I suppose this could lead to discussions regarding manufacturers claims and honesty in reporting optical surfaces. However, I think the inexpensive "starter" level optics do serve their purpose. Without inexpensive telescopes, many people would never enter the hobby and have the opportunity to develop the skills and desire to appreciate hand crafted performance instruments.
Well, that's my 1:30 am rant!!!
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Cary Chleborad
Woden Optics
www.WodenOptics.com
I've posted an article on my web site discussing quality criteria and sample data from one of these mirrors I just examined and refigured.
http://www.WodenOptics.com/cloudy.html
I suppose this could lead to discussions regarding manufacturers claims and honesty in reporting optical surfaces. However, I think the inexpensive "starter" level optics do serve their purpose. Without inexpensive telescopes, many people would never enter the hobby and have the opportunity to develop the skills and desire to appreciate hand crafted performance instruments.
Well, that's my 1:30 am rant!!!
--------------------
Cary Chleborad
Woden Optics
www.WodenOptics.com