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Newt 2.5

Newt is a telescope design tool

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Newt screenshotNewt is a newtonian telescope design software. It ray traces the telescope examining for vignetting, enhances diagonal size, adjust baffle size and position, and a lot more. It enables you to simple and rapidly change any of the design parameters of the telescope and to see the results rapidly.


- Shows a side view of a Newtonian telescope.
- Change parameters like mirror diameter, focuser height, diagonal minor axis, focuser inside diameter, tube inside diameter and thickness, and many more.
- Use centimeters, inches, or millimeters as the unit of measure.
- Compute baffle size and placement.
- Compute diagonal offset.
- Compute fields of 100% and 75% illumination.
- Load and Save files.
- Eyepiece table includes power, focal length, apparent field, exit pupil, and true field.
- Check for minimal useable diagonal minor axis.
- Verify for vignetting at the focuser.
- Verify for vignetting of true field by top of tube.
- Compute obstruction percentages for light loss and contrast reduction.


  • An invaluable freeware administrator tool.
  • Retrieve all the detailed information available.
Name Newt
Version 2.5
Developer | see all products from this developer
Product Homepage Newt
License Free (Freeware)
Last Week Downloads 8
All Time Downloads 755
Filesize 0.1MB
MD5 Checksum F94EFF35A6BDE1730B8984563B58EDB9
OS Support Windows All
Category Home & Education

100% CLEAN Certification

BadgeNewt has been tested by team against viruses, spyware, adware, trojan, backdoors and was found to be 100% clean. Our editors will recheck this software periodically to assure that it remains clean.


Old Versions

Software Date Added
Newt 2.5 September 03, 2015 - Latest Version
Newt 0.25 May 25, 2010

Download the free Newt