Target: Coordinates or target name (it will be used to search in SIMBAD)
Place: You can use geolocation, write a place name, an IAU/MPC code, or lat,lon in degrees
Date: Observing date (YYYY-MM-DD)
Time: Observing local time, it will be converted to UTC (hh:mm)
Separation: Maximum separation from target to reference stars in degrees (5-20)
Search reference stars
Stars with height below -10° won't be displayed. Results will be sorted by ΔHeight, click on a column header to change this.
Please let me know if something goes wrong (empty results list, strange behaviour, …).

February 2026: Resolution of TLS certificate problem