SYNOPSIS

plot-constellations -w file | -L | -o file

DESCRIPTION

Annotates images with constellations, bright stars, Messier/NGC objects, Henry Draper catalog stars, etc.

OPTIONS

-w file

WCS input file

-L

just list the items in the field

-o file

image output file; "-" for stdout

-p

write PPM output - default is PNG ([-i PPM input file] OR [-W width -H height] )

-s scale

scale image coordinates by this value before plotting.

-N

plot NGC objects

-F fraction

minimum NGC size, relative to image size (default 0.02)

-C

plot constellations

-B

plot named bright stars

-D

plot HD objects

-d

path to HD catalog

-b N

just plot the N brightest stars

-c

only plot bright stars that have common names.

-j

if a bright star has a common name, only print that

-v

be verbose

-n width

NGC circle width (default 2)

-f size

font size.

-M

show only NGC/IC and Messier numbers (no common names)

-G spacing

Plot RA,Dec grid with specified grid spacing in arcmin.

-g r:g:b

grid color (default 0.2:0.2:0.2)

-J

print JSON output to stderr

-V

vertical alignment of text labels, "C"enter/"T"op/"B"ottom: default C

-O

horizontal alignment of text labels, "L"eft/"C"enter/"R"ight, default L

AUTHOR

The Astrometry.net team. Principal investigators are David W. Hogg (NYU) and Dustin Lang (CMU).