This dialog is used to enter the coordinates on which the images to be measured are centered. The software needs this information so that the corresponding information can be extracted from the reference star catalogue. The position entered here should match the actual coordinates of the image centered at least to the precision specified for the Pointing in the program settings.
The user must enter either the coordinates at which the images are centered (Right Ascension and Declination), or the designation of the object on the images, so the software can compute these coordinates (assuming that the images are centred on the target).
Object: If an object designation is specified, the software will search for a designation that starts with the characters you enter here in the MPCOrb databse. Note that, if you search for a numbered minor planet, you must include at least the leading parenthesis. For long-period and unnumbered short-period comets, you must include the 'C/' and 'P/', respectively. Blanks in the designation of the object are not significant, and there is no differentiation between lower- and uppercase letters. Alternatively, you may select the object using the object browser, which can be called by pressing the [...] button. When the cursor leaves the field (for example, after pressing the tab [Tab] key) the coordinates calculated for the object will appear.
Right Ascension: Right Ascension, in Hours, Minutes and Seconds.
Declination: Declination in Degrees, Arc Minutes and Arc Seconds. Use the Radio Buttons to distinguish between northern and southern Declinations.
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