Newtonian telescope design program

[sportikus]

Newt is a Newtonian telescope design program. It ray traces the telescope checking for vignetting, optimizes diagonal size, calculates baffle size and position, and a lot more. It allows you to easily and quickly change any of the design parameters of the telescope and to see the results immediately.

 

NEWT features:

 

* Display a side view of a Newtonian telescope.

* Modify parameters like mirror diameter, diagonal minor axis, focuser height, focuser inside diameter, tube inside diameter and thickness, and many more.

* Use inches, centimeters, or millimeters as the unit of measure.

* Calculate baffle size and placement.

* Calculate diagonal offset.

* Calculate fields of 100% and 75% illumination.

* Load and Save files.

* Eyepiece table includes focal length, power, exit pupil, apparent field, and true field.

* Check for minimum usable diagonal minor axis.

* Check for vignetting at the focuser.

* Check for vignetting of true field by top of tube.

* Calculate obstruction percentages for light loss and contrast reduction.

* Cast three rays through telescope - an on-center ray, a 100% light zone ray, and a 75% light zone ray. Use these to check for vignetting at focuser, true field cutoff, etc.

* Print specifications and dimensions to a printer (see note).

 

http://www.dalekeller.net/ATM/newtonians/newtsoft/newtsoft.htm

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