Make a Finding Chart

• First, Get an Image of the Guide Field  from the Digitized Sky Survey. On the DSS page, choose the "Save image to disk" option. Save the image as "imagename.fits." You may also choose gzip compression ("imagename.fits.gz").
• Next, Find  Guide Stars from the USNO A2.0 Catalog
• For tip-tilt, limit the magnitudes to ~ 9 < Mag < 16 (go fainter if there are no candidates in this range, but V = 18 is the limit).
• Use the Basic Form, or the Detailed Form. This will produce a plot in your browser window. Stop here, or continue to make an overlay on the DSS image. Make sure to download the star list from the USNO A2.0 plot (it's a link at the bottom of the plot you just made).
• Alternately, you can plot select objects by making a text file with RA and DEC in free format: hh mm ss dd mm ss, one object per line.

• Then get the IRAF script "make_chart" to create the final chart. Read the included comments in the script for install and execution info.