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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:
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Display a side view of a Newtonian
telescope.
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Modify parameters like mirror diameter,
diagonal minor axis, focuser height, focuser inside
diameter, tube inside diameter and thickness, and many more.
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Use inches, centimeters, or millimeters as
the unit of measure.
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Calculate baffle size and placement.
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Calculate diagonal offset.
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Calculate fields of 100% and 75%
illumination.
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Load and Save files.
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Eyepiece table includes focal length, power,
exit pupil, apparent field, and true field.
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Check for minimum useable diagonal minor
axis.
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Check for vignetting at the focuser.
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Check for vignetting of true field by top of
tube.
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Calculate obstruction percentages for light
loss and contrast reduction.
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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.
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Print specifications and dimensions to a
printer (see note).
Note: There is a bug in the printer
code. It will probably not print correctly on most modern
printers. Sorry.
Newt Requirements:
Newt version 2.5 runs under Windows 3.1, 95,
98, ME, NT, 2000, or XP.
Newt is was written,
published and is owned by
Dale Keller.
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This page is
published with permission.
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Newt is "freeware".
No donations or payment is required. Use it and enjoy.
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If you'd like to go
directly to Dale Keller's Newt page, please click
here.
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DOWNLOAD NEWT now.
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Here is a WEB version of NEWT available on the
Stellafane website. It works great.
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