Polishing 200mm f6 Mirrors | Middle TN Advice

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Discussion Overview

The discussion revolves around the process of making and polishing 200mm f6 primary mirrors for telescopes, with a focus on seeking local advice and mentorship in middle Tennessee. Participants share their experiences and seek guidance on the polishing stage of mirror making.

Discussion Character

  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant is working on matched 200mm f6 primary mirrors and seeks local advice for polishing.
  • Another participant inquires if the mirrors are for a 200 mm Newtonian binocular telescope.
  • The original poster expresses uncertainty about whether to focus on planetary or rich-field observing, leading to the choice of f6.
  • A suggestion is made to connect with local amateur astronomy groups, which may have members experienced in mirror making.
  • Resources for local astronomy clubs are shared, including links to the Middle Tennessee Astronomical Society and the Memphis Astronomical Society.
  • Concerns are raised about the outdated information on the astronomy club's website, questioning the current activity level of the group.

Areas of Agreement / Disagreement

Participants generally agree on the value of seeking local mentorship and resources, but there is uncertainty regarding the current status of the suggested astronomy groups and whether they are active.

Contextual Notes

The discussion reflects a reliance on potentially outdated resources and the need for updated information about local astronomy clubs.

Who May Find This Useful

Individuals interested in amateur telescope making, mirror polishing techniques, and local astronomy communities in middle Tennessee may find this discussion relevant.

montoyas7940
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I have been working on making a pair of matched 200mm f6 primary mirrors. I have been using Texereau as a guide. I think I have finished fine grinding. I would like to find someone near middle Tennessee to look at my work and offer advice, especially as I begin polishing.
Any Ideas?
 
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Are you making a 200 mm Newtonian bino?
 
Exactly! I am still looking for a mentor on the polishing, however.

I never could decide between planetary and rich-field so that's why f6. Of course I would like something bigger, but you know how it is...
 
You'd have a good chance finding somebody who can help in an amateur astronomy group in your area. They are very likely to have members who have made their own telescopes and possibly who have ground mirrors before. Try attending one of their group meetings or star parties, and ask around with the people there.

A quick google search on:
> tennessee amateur astronomy

came up with the following 2 groups

Middle Tennessee Astronomical Society (MTSU / Memphis area)
http://tnsky.com/mtas/

Memphis Astronomical Society (probably not close to you)
http://www.memphisastro.org/

If these are not located near you then you might call them anyway, they might know of a group closer to where you live.

Good luck!
 
Thanks, the tnsky website looks promising.
 
I checked that site again, and now realize it is 4 years out of date! Hope they are still an active group, even if they're not updating their website.

Found this contact info for the group:
http://www.go-astronomy.com/astronomy-club.php?ID=318

p.s. I should have said MTSU / Nashville area before, but you probably figured that out.
 

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