Special local files for gstar?

There are some useful local files that you can create that alter the performance of gstar. 

 
You can make a local file named Offset.Angle that contains
an offset rotation angle in degrees (0.5).

You can make a local file named IHMP.Position that contains
the X,Y of the IHMP in ACAM pixel coordinates (e.g. X,Y=174,382).

You can make a local Probes.Current to specify the probe 
positions for gc1,gc2,wf1,wf2.
You can make a local Probes.Scale_Factor to change the probe 
positions by a fixed scale factor (i.e. 1.000123).

Examples of files:
% cat Offset.Angle
0.00

% cat IHMP.Position
174. 382.0 

% cat Probes.Scale_Factor  
0.950000
There are other such files that can be built for purposes of displaying the images and building objects (USNO) catalogs:
  1. If a "Faint_Mag.Limit" limit file is present, then a faint limit is read and used in gathering the sources. This is helpful for cases where you are calibrating a wide-area image.
  2. If a "Default.DSS" file is present, then it is used to specify the value of the radius (in arcmin) of the DSS image.
  3. If a "Default.greyscale" file is present, it can contain better z1,z2 values for the DSS image display.


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