To upload a CSV file, click on the "Upload CSV table" button and select your file. It must contain at least 2 fields:
            
                - ra : right ascension of the source in decimal degrees
                
- dec : declination of the source in decimal degrees
            
            Your file can contain additional fields:
            
                - label : the label which will be displayed next to the source position
            
Lines starting with # will be ignored.
            You can download the following example files: Messier objects with positions only, Messier objects with labels.