Maps for Globe at Night 2010 computed for the so-called zenith extinction of 0.25 mag using a programme map_bsct (accessible even online through map.php here)

See GaNight for a contemporary directory 2009-2012-2014...

Jenik Hollan
[ICO]NameLast modifiedSizeDescription

[PARENTDIR]Parent Directory  -  
[   ]0.pdf2010-10-26 15:56 224Kat the equator
[   ]20N.pdf2010-10-26 16:02 212Klatitude 20 degrees
[   ]20S.pdf2010-10-26 16:01 201Klatitude -20 degrees
[   ]40N.pdf2010-10-26 16:00 199Klatitude 40 degrees
[   ]40S.pdf2010-10-26 16:01 186Klatitude -40 degrees
[   ]50N.pdf2010-10-26 15:55 176Klatitude 50 degrees
[   ]50cz.pdf2010-03-03 11:44 170K50°, Czech caption
[   ]60N.pdf2010-10-26 16:02 144Klatitude 60 degrees
[DIR]Leo/2010-10-27 13:41 -  
[   ]all2010.pdf2010-10-27 13:04 1.3Mall latitudes together
[   ]scripts.zip2010-10-27 13:40 11Kbash and LaTeX sources

Equidistant projection onto a cone (below latitude 50 N) or a cylinder (50 and 60 N). For cylinders, undistorted parallel is at the Belt of Orion, for cones, there are two such parallels at 8 degrees from the Belt. The Bright Star Catalogue has been used for the maps 0 mag to 5 mag (Betelgeuse shown at its maximum light), the original Hipparcos for 6 mag and 7 mag (Delta Orionis is too faint in the Czech version, due to a bug in the map_bsct programme; the bug has been corrected in October 2010 and another map sets renewed). The limits are for the amounts of light entering the eyes of observers, i.e., starlight is attenuated by the atmosphere.