Prerequisites

• A repository with the sunspot drawings already scanned. The sunspot drawings name should contain the date and the time of the observation.
• The appropriate Python environnement
• python 3.16.13
• pymsysql
• PyQt5
• PIL
• numpy
• shapely

The database

• install MySQL
• create a database 'sunspot_drawing'
• construct the appropriate structure of the table as in this file
• some tables need to be filled before running digisun
• the table drawing_type
• name is the name of the type of drawing
• prefix is the prefix of the drawing name
• p_oriented is the orientation of the solar disk. if the the north point does not coincide with the celestial north point (due to the P-angle), then the value is 0
• height : height of the drawing in mm
• width: width of the drawing in mm
• name_point1 : name of the first point used for the calibration (value possible :'Center', 'South', 'West')
• name_point1 : name of the second point used for the calibration (value possible :'Center', 'South', 'West')
• pt1_fraction_width : first guess of the first x-position used for the calibration
• pt1_fraction_height : first guess of the first y-position used for the calibration
• pt2_fraction_width : first guess of the second x-position used for the calibration
• pt2_fraction_height : first guess of the second y-position used for the calibration
• the table observer
• the type of drawing define above
• the abbreviation of the observer name
• leroyname code : something only for us, should be remove in updated version
• lastname
• firstname
• the table quality
• the list of value describing the quality (in our case it goes from 1 to 5, with 5 being the best quality)

The software installation

• The source files can be downloaded on github
• In the directory 'digisun', you need to create a new directory called data
• In the directory 'data', put the file digisun.ini and fill it
• Launch the software with the command 'python digisun.py'