Designation of objects on image.
Circles of different colour mark objects on an image.
1) Green colour. The star or something another is marked for the following measurement. If set mode "i", at click on the star, a coordinates in pixels, equatorial coordinates, proper motions and star magnitudes in two photometric systems are printed in a window "Information". (Equatorial coordinates; proper motions and magnitudes are printed, if this star is identified in a catalogue).
2) Red colour. The star is already measured.
3) Blue. It is a reference star. In window "Information" are outputted residuals on this star (dsx, dsy).
4) Yellow. It is object with the calculated equatorial coordinates.