Stellarium is a free open source planetarium for your computer. It
shows a realistic sky in 3D, just like what you see with the naked eye,
binoculars or a telescope. Don't be fooled by it being free - this software is
amazing.
A complete
image processing solution absolutely free. You can preview the product and
download it absolutely FREE
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HERE
Polarfinder
This program is a must for anyone with an
equatorial mount. Perfect for both locating Polaris position for use with Polar
scopes and also for finding transit time to set your Polar Scope setting
circles by.
