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C2A (Computer Aided Astronomy) is a Planetarium software that allows you to build detailed views of stellar fields. An important objective of this software is to take into account the main catalogues available to professional and amateur astronomers in order to prepare observations on small fields as well as astrometry works.
C2A is able to access the following catalogues: SAO (provided with the program distribution), Guide Star, Tycho-2, USNO-SA1.0, USNO-A2.0 and UCAC1.
ScreenShot
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