BAIT: landolt command

NAME

landolt - locates photometric standard stars

SYNOPSIS

landolt ra=hh:mm:ss dec=dd:mm:ss [epoch=2000] [bright=#] [faint=#] [B-V=min,max] [box=#] | [name=]

DESCRIPTION

This program looks up data from the catalog of photometric standards published by A.U. Landolt ( Astronomical Journal, 88 pg. 439, 1983). The catalog contains stars ranging in V from 6.223 to 13.090 with a variety of colors. The data files are `land1.catalog'. and `land2.catalog'. The directory can be overridden by setting the CATALOGHOME environment variable.

The program searches for all stars within a box of 1 degree on a side to the specified coordinates. The output is a single line with a format similar to the following:

12:40:18.0 -00:32:15 1985.0 9.361 1.583 1.662 0.833 0.763 1.588 104306
where the fields are:

RA Dec Epoch V U-B B-V V-R R-I name

The box flag causes all stars with the specified size (in decimal degrees) to to be printed out (in order of increasing R.A.).

OPTIONS

ra= hh:mm:ss specifies center search R.A. assumed to be epoch 2000.

bright= # where # is the magnitude of the brightest star to search for.

faint= # where # is the faintest star magnitude to accept.

B-V=min,max selects stars with B-V colors between min and max.

box= all stars within the specified box of degrees on each side.

There is a second mode by which the name of the star is specified and the program regurgitates the above line.

EXAMPLE

landolt ra=12:30 dec=12:00 bright=10.0 B-V=.2,.5

searches for the all the stars in a one degree box centered on ra=12:30 dec=12 that are not brighter than 10th magnitude and have a colors between .2 and .5.

SEE ALSO

bright, mboxofstars