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Equipment Discussions >> ATM, Optics and DIY Forum

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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Re: Mirror Cell material guidance new [Re: Guyonthecouch]
      #5679332 - 02/14/13 12:14 PM Attachment (7 downloads)

this is what I get from plop.

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Pinbout
Postmaster
*****

Reged: 02/22/10

Loc: nj
Re: Mirror Cell material guidance new [Re: Guyonthecouch]
      #5679479 - 02/14/13 01:28 PM Attachment (20 downloads)

how's this for a full size pdf. you could take it to kinkos and have them print it on 24x36 and make sure they don't print to fit paper.

also it probably wouldn't cost much to get this waterjet cut. I had a 8in cell priced out at $40 for the plates $12 for the bars.



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StarDusty
sage


Reged: 10/02/07

Loc: Parsippany, NJ
Re: Mirror Cell material guidance new [Re: Guyonthecouch]
      #5679589 - 02/14/13 02:15 PM

My 16" is not full thickness. Sorry I don't remember its thickness, but I can look when I return home. Feel free to borrow any idea you want.

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StarDusty
sage


Reged: 10/02/07

Loc: Parsippany, NJ
Re: Mirror Cell material guidance new [Re: Pinbout]
      #5679757 - 02/14/13 03:36 PM

Danny,

I like your hanging cell.

I would suggest that the mirror edge supports be connected to the stiff top plate rather than the hanging mirror cell plate.

That way any load they pick up will go directly into the stiff top plate and not through the more flexible collimation parts.


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Pinbout
Postmaster
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Reged: 02/22/10

Loc: nj
Re: Mirror Cell material guidance new [Re: StarDusty]
      #5679783 - 02/14/13 03:51 PM

the side support has to move with the mirror.

the aperture plate doesn't move.
the bottom support plate moves with the mirror.
the bolt that holds the sidesupport could go thru the the aperture plate and use it for another bearing surface but...

on another hand on my 8in travel dob I have the edge of the aperture plate to support the mirrors side. I put two teflon pieces at 90°. I'll accept any distortion from not being exactly on CoG. I install some thumbnut head on my socket cap head screws and sitting there collminating it was so easy. so fun. couldn't stop smiling.



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