TelescopeDesignMain

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These are the steps I'm going through to design and build my scope.
These are the steps I'm going through to design and build my scope.
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'''Style'''
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*'''Style'''
I've decided that the Dobsonian style of telescope appears to be the easiest to build on a ShopBot, and that building it using tubing trusses instead of a solid main tube is the construction method that will work best for me. Since I won't have a permanent place to set it up it will need to be portable, so one of the designs that can be dis-assembled makes the most sense.
I've decided that the Dobsonian style of telescope appears to be the easiest to build on a ShopBot, and that building it using tubing trusses instead of a solid main tube is the construction method that will work best for me. Since I won't have a permanent place to set it up it will need to be portable, so one of the designs that can be dis-assembled makes the most sense.
Other than the specialized optical and mechanical parts like the lens and eyepiece tubes, the rest of the materials should be standard hardware store and lumber yard materials. 1/2" Baltic Birch Plywood is strong and stable, so that's the main construction material that I'll use.
Other than the specialized optical and mechanical parts like the lens and eyepiece tubes, the rest of the materials should be standard hardware store and lumber yard materials. 1/2" Baltic Birch Plywood is strong and stable, so that's the main construction material that I'll use.
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'''Size'''
'''Size'''
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Telescopes are defined by the size of the Primary mirror and the smallest Dobsonian telescope mirror available seem to be 5-6". The consensus seems to be that 8" is the smallest size that still makes a good telescope so that's the size I'm going to build. Others may want to build a larger scope...Mike Rawlings built a 12" telescope...but the basic design should be somewhat scalable.
Telescopes are defined by the size of the Primary mirror and the smallest Dobsonian telescope mirror available seem to be 5-6". The consensus seems to be that 8" is the smallest size that still makes a good telescope so that's the size I'm going to build. Others may want to build a larger scope...Mike Rawlings built a 12" telescope...but the basic design should be somewhat scalable.
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'''Finalize Components'''
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The specifics of the optical parts must be known before the calculations and design of the various parts can be made. E-Scopes sells kits of all the specialty optical parts for several sizes of telescopes. Seems like it might be a good option to make the project more easily reproducable by others...all the size calculations should be the same.
'''Design Calculations'''
'''Design Calculations'''
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When the mirror is decided on, use [http://www.dalekeller.net/atm/newtonians/newtsoft/newtsoft.htm Newt] software to define the overall dimensions.
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When the mirror is decided on, I plan on using [http://www.dalekeller.net/atm/newtonians/newtsoft/newtsoft.htm Newt] software to define the overall dimensions.
 +
 
'''Costs'''
'''Costs'''
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* Optics and specialty parts. Price list from [http://www.handsonoptics.com/pts_antares.html Hands on Optics]
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* [http://www.e-scopes.cc/ e-Scopes] sells kits of all the specialty components
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* Kits of specialty optical parts available from [http://www.e-scopes.cc/ e-Scopes]
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* [http://www.handsonoptics.com/pts_antares.html Hands on Optics] price list
* 1/2" Baltic Birch Plywood
* 1/2" Baltic Birch Plywood
* Aluminum tubing
* Aluminum tubing
* Nuts and bolts
* Nuts and bolts
* Misc supplies
* Misc supplies

Revision as of 16:55, 12 November 2007

Telescope Design decisions

These are the steps I'm going through to design and build my scope.

  • Style

I've decided that the Dobsonian style of telescope appears to be the easiest to build on a ShopBot, and that building it using tubing trusses instead of a solid main tube is the construction method that will work best for me. Since I won't have a permanent place to set it up it will need to be portable, so one of the designs that can be dis-assembled makes the most sense.

Other than the specialized optical and mechanical parts like the lens and eyepiece tubes, the rest of the materials should be standard hardware store and lumber yard materials. 1/2" Baltic Birch Plywood is strong and stable, so that's the main construction material that I'll use.


Size

Telescopes are defined by the size of the Primary mirror and the smallest Dobsonian telescope mirror available seem to be 5-6". The consensus seems to be that 8" is the smallest size that still makes a good telescope so that's the size I'm going to build. Others may want to build a larger scope...Mike Rawlings built a 12" telescope...but the basic design should be somewhat scalable.


Finalize Components

The specifics of the optical parts must be known before the calculations and design of the various parts can be made. E-Scopes sells kits of all the specialty optical parts for several sizes of telescopes. Seems like it might be a good option to make the project more easily reproducable by others...all the size calculations should be the same.

Design Calculations

When the mirror is decided on, I plan on using Newt software to define the overall dimensions.


Costs

  • e-Scopes sells kits of all the specialty components
  • Hands on Optics price list
  • 1/2" Baltic Birch Plywood
  • Aluminum tubing
  • Nuts and bolts
  • Misc supplies

Contributors
BillYoung
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