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Key to the .txt files

Constell
A standard 3-letter abbreviation of the constellation
RA
Right Ascension
Decl.
Declination
Mag.
Magnitude (catalogue data or estimate)
Magn.
Magnitude used for the drawing
Field
the FOV of the drawing
NE Lim.mag
The naked-eye limiting magnitude
Background sky
An estimate of the general brightness of the sky. 1 is best and 5 is worst:
1 = Almost black, Milky Way very bright and M13 easily visible NE
2 = Good but not perfect. MW bright but fainter parts difficult
3 = Average. Milky Way visible but not bright
4 = Poor. Milky Way barely visible.
5 = Very poor. MW not visible. Full Moon nights.
Seeing
An estimate of the steadiness of the air mass. 1 is best and 5 worst.
Alt.
The altitude of the object. (Degrees above the horizon)
Brighness
An estimate of the general visibility of the object. 1 is best and 5 faintest:
1 = A showpiece. Very bright and easy
2 = Bright, easy without averted vision.
3 = Moderately faint without averted vision but bright vith it
4 = Barely visible without averted vision
5 = Visible only with averted vision
5b or 6 is occasionally used for objects at the 'Three photon limit' ie. suspected ones.

Updated 14.11.2000