Best astronomy mapping software

Hi all!

I am looking for a good (freeware) program to make good prints of star
charts. These are the things I want at my print
- detailed stars: up to magnitude +10 and it should be clear on the print
which stars have which magnitude
- good deep-sky database, with the deep-sky objects shown at angular size
- straight declination and RA lines (for easy coordinate determining)
the program should have the ability to zoom in and show more or less
deep-sky objects

I used to use Starcalc, but the DEC and RA lines are not straight and the
star databases are not that good.

Does someone know such a program?

Thanks in advance for your help!
Pieter
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