Name
std - standard star search
Synopsis
std [search] [display]
Description
std is a command-line tool which allows to browse an internal database
of infra-red standard stars. std contains internally a database of
more than 800 stars, built-up by J.G.Cuby. From the catalog, it is
possible to select stars based on a position criterion, name, sky
region, or magnitude in a given band. Results can be displayed in dif-
ferent formats.
Search Options
Search options are related to different user-defined criteria to select
a number of stars in the database. The following are implemented:
-p/--pos HH MM SS HH MM SSorDD DD
If this is the only search criterion on the command-line, only
the closest star to this position will be returned. The position
can be provided as hours, minutes, seconds for RA and DEC (6
values expected) or simply in degrees (2 values expected).
-r/--radius value
Together with the --pos option, this specifies a radius around a
sky position. All stars within this region will be selected.
-n/--name value
To search stars by name. The provided value is a regular expres-
sion, all stars matching it will be selected.
-m/--mag band min max
To search stars by magnitude range in a given wave band. Sup-
ported wave bands are: J, H, K, Ks, L, Lprime, M, Mprime. Mini-
mum and maximum magnitudes define a range into which all stars
are selected.
Display Options
-k/--key
To display the output in keyword format.
Files
The star database contains the following informations about stars (in
this order):
Name of the star
RA and DEC in HH:MM:SS format
Spectral type
Magnitudes in J, H, K, Ks, L, M.
Examples
To print out the closest star from position ’10 12’ (in degrees):
std --pos "10 12"
To print out all stars within 10 degrees of this position:
std --pos "10 12" --radius 10
To print out all stars which name matches "FS*"
std --name "FS*"
To look for all stars in band L having a magnitude between 5 and 6:
std --mag "L 5 6"
Bugs
It is not yet possible to combine selection criteria.