[SJAAboard] Collimation tools for scopes

[Rich N]

Hi Rob,

I suggest we buy Cheshire tools rather than lasers.  They work quite well
and a laser can cause you to think the scope is in colimation when it is really
still out of collimation. 

I'll talk to you off line about the lasers.

Rich

> Almost none of the Newtonians in the program are supplied with collimation
> aids.  In every case I can think of when an aid is supplied it is just a
> collimation cap.
> 
> I was already going to purchase a laser for the Lightbridge.  I think these
> other scopes also need better tools
> 
> These scopes definitely need better tools
> 
> 14 8" f/8.5 Dob**
> 28 13" Highe Dob
> 39 17" Zeider Dob
> 41 18" Sky Designs
> 
> **While a tube dob the secondary turns easily.
> 
> I believe even Tube Newts need their collimation tweaked.  If you agree then
> these also require a tool
> 
> 7 12.5" f/6.2 Dob
> 11 6" f/8 Orion Dob
> 12 8" f/6 Orion Dob
> 13 6" f/8 Orion Dob
> 23 6" Newt/ P Mount
> 32 5.5 f7.6 Dob
> 33 10" f/4.5 Dob
> 35 8" f/6 Meade Newt
> 36 8" f/6 Dob
> 43 4.5" Orion Dob
> 44 4.5" Orion Newt
> 45 10" homebuilt
> 46 6" Orion Dob
> 
> Orion is currently selling their old style laser for $28.  This would
> require sighting down the tube to see the return beam.
> 
> They also have a newer and much lighter laser for $58.  In this one you can
> see the return from the side.
> 
> I recommend we purchase the higher end laser for the scopes in the first
> category.  We could buy the cheaper laser for the others.
> 
> The lasers are on sale.  According to Orion we do not have to decide before
> the board meeting.
> 
> Rob Hawley 
> 
> 
> 
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