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    Home»iOS Development»How to Install Astropy Python package on iOS?
    iOS Development

    How to Install Astropy Python package on iOS?

    big tee tech hubBy big tee tech hubJanuary 29, 2026012 Mins Read
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    How to Install Astropy Python package on iOS?
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    I am trying to run a Python script on my iPhone and iPad that uses the Astropy package. I have installed both Pythonista and Juno. Juno supposedly has it installed but I get errors from it. The script I am trying to run is pretty straight forward and below. It does run on a desktop so there are no bugs in it.

    import astropy.units as u
    from astropy.coordinates import EarthLocation, SkyCoord, AltAz
    from astropy.time import Time
    import requests
    
    
    def get_equatorial_coords():
        # 1. Define the Observer's Location: Roseville, California
        # Lat/Lon for Roseville, CA
       # location = EarthLocation(lat=38.7521*u.deg, lon=-121.2859*u.deg, height=50*u.m)
        try:
            # Use ip-api.com (free, no API key required for low volume)
            response = requests.get("
            data = response.json()
    
            if data['status'] == 'success':
                lat = data['lat']
                lon = data['lon']
                city = data['city']
                region = data['regionName']
    
                # Create the Astropy EarthLocation object
                # Note: height is set to 0 as IP geo usually doesn't provide altitude
                location = EarthLocation(lat=lat * u.deg, lon=lon * u.deg, height=0 * u.m)
        finally:
                print(f"Detected Location: {city}, {region}")
                print(f"Coordinates: {lat}, {lon}")
    
    
    #    location = get_location_by_ip()
        # 2. Get the current system time (UTC)
        current_time = Time.now()
    
        print(f"--- Observation Details ---")
        print(f"Location: Roseville, CA")
        print(f"System Time (UTC): {current_time}")
        print("-" * 27)
    
        # 3. Request Target Input from User
        try:
    
            user_az = float(input("Enter azimuth 0.0 to 180.0: "))
            user_alt = float(input("Enter altitude 0.0 to 90.0: "))
        except ValueError:
            print("Invalid input. Please enter numerical values.")
            return
    
        # 4. Create an AltAz frame for the specific time and location
        altaz_frame = AltAz(obstime=current_time, location=location)
    
        # 5. Define the target in the AltAz system
        target_altaz = SkyCoord(az=user_az*u.deg, alt=user_alt*u.deg, frame=altaz_frame)
    
        # 6. Transform to Equatorial Coordinates (ICRS/J2000)
        target_icrs = target_altaz.transform_to('icrs')
    
        print(f"\n--- Results ---")
        print(f"Right Ascension (RA): {target_icrs.ra.to_string(unit=u.hour, sep='hms')}")
        print(f"Declination (Dec):    {target_icrs.dec.to_string(unit=u.deg, sep='dms')}")
    
    
    
    
    if __name__ == "__main__":
        get_equatorial_coords()
    



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    Astropy Install iOS package Python
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