diff --git a/tests/libshao.so b/tests/libshao.so
deleted file mode 100644
index 47d97a44a74c8f011914dc07f52d8957c81eff39..0000000000000000000000000000000000000000
Binary files a/tests/libshao.so and /dev/null differ
diff --git a/tests/shao_test.py b/tests/shao_test.py
deleted file mode 100644
index a4dab231537136780a79181e36928db1181fc787..0000000000000000000000000000000000000000
--- a/tests/shao_test.py
+++ /dev/null
@@ -1,75 +0,0 @@
-import os
-import sys
-
-from ObservationSim.Astrometry.Astrometry_util import on_orbit_obs_position
-
-def readFits2List(fn):
-    from astropy.io import fits
-    if not os.path.exists(fn):
-        print("Can not find "+fn); return False
-    
-    hdul=fits.open(fn)
-    data = hdul[1].data
-    ra_list = data['RA'].tolist()
-    dec_list = data['Dec'].tolist()
-    pmra_list = data['pmra'].tolist()
-    pmdec_list = data['pmdec'].tolist()
-    parallax_list = data['parallax'].tolist()
-    rv_list = [0.0 for i in range(len(ra_list))]
-    hdul.close()
-    return ra_list, dec_list, pmra_list, pmdec_list, rv_list, parallax_list
-    
-def usageExample(targets_fn, results_fn, x, y, z, vx, vy, vz, date_str, time_str):
-    if not os.path.exists(targets_fn):
-        print("Can not find " + targets_fn)
-        sys.exit(1)
-    ra_list, dec_list, pmra_list, pmdec_list, rv_list, parallax_list = readFits2List(targets_fn)
-    output_ra_list, output_dec_list = on_orbit_obs_position(ra_list, dec_list, pmra_list, \
-                                      pmdec_list, rv_list, parallax_list, len(ra_list), \
-                                      x, y, z, vx, vy, vz, "J2015.5", date_str, time_str, lib_path='./libshao.so')
-    f = open(results_fn, "w")
-    ll = list()
-    ll.append("n,date,time,ra,dec,pm_ra,pm_dec,rv,parallax,obs_ra,obs_dec\n")
-    for i in range(len(output_ra_list)):
-        ra_str = str(ra_list[i]) 
-        dec_str = str(dec_list[i]) 
-        pmra_str = str(pmra_list[i])
-        pmdec_str = str(pmdec_list[i])
-        rv_str = str(rv_list[i])
-        parallax_str = str(parallax_list[i])
-        ora_str = str(output_ra_list[i])
-        odec_str = str(output_dec_list[i])      
-        l = str(i)+date_str+","+time_str+","+ra_str+","+dec_str+","+pmra_str+","+pmdec_str+","+rv_str+","+parallax_str+","+ora_str+","+odec_str+"\n"
-        ll.append(l)
-    f.writelines(ll)
-    f.close()
-    print("Process finished. Results save to "+results_fn)
-    
-def usageTips():
-    print("Usage 1: python3 ./shao_test.py")
-    print("Usage 2: python3 ./shao_test.py yyyy-MM-dd HH:mm:ss.ms Positon1_KM Positon2_KM Positon3_KM Velocity1_MK/S Velocity2_MK/S Velocity3_MK/S $PATH1/MMW_Gaia_Cluster_D20_SS_astrometry.fits $PATH2/results.csv")
-    print("Caution: Do no include space in path; Unit is KM or KM/S")    
-    print("Example: python3 ./shao_test.py 2025-03-05 22:20:15.12 2347.766100 5132.421392 3726.591334 5.282357 4.644825 -3.074722 ./MMW_Gaia_Cluster_D20_SS_astrometry.fits ./results.csv")
-    
-if __name__ == "__main__":
-    args_value = sys.argv
-    if len(args_value) == 1:
-        usageExample("./MMW_Gaia_Cluster_D20_SS_astrometry.fits", "./results.csv", 2347.766100, 5132.421392, 3726.591334, 5.282357, 4.644825, -3.074722, "2025-03-05", "22:20:15.12"); sys.exit(1)
-    elif len(args_value) == 11:
-        date_str = args_value[1]
-        time_str = args_value[2]
-        x = float(args_value[3])
-        y = float(args_value[4])
-        z = float(args_value[5])
-        vx = float(args_value[6])
-        vy = float(args_value[7])
-        vz = float(args_value[8])
-        targets_fn = args_value[9]
-        results_fn = args_value[10]
-        if not os.path.exists(targets_fn):
-            print("Can not find " + targets_fn)
-            sys.exit(1)
-        usageExample(targets_fn, results_fn, x, y, z, vx, vy, vz, date_str, time_str)
-    else:
-        usageTips()
-