diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000000000000000000000000000000000000..5ed7e3cc517d8b31a604c92490a27fb23c75a581
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,7 @@
+build/*
+CSSTSim.egg-info/*
+dist/*
+*.pyc
+*.so
+*disperse.c
+*interp.c
\ No newline at end of file
diff --git a/ObservationSim/Config/Header/ImageHeader.py b/ObservationSim/Config/Header/ImageHeader.py
index a078f00af47699ae787a8020be1674e385e4d109..171e7cae0f8c9ed2e707a264c2063f2144df27f5 100644
--- a/ObservationSim/Config/Header/ImageHeader.py
+++ b/ObservationSim/Config/Header/ImageHeader.py
@@ -383,7 +383,7 @@ def generatePrimaryHeader(xlen = 9216, ylen = 9232, pointNum = '1', ra = 60, dec
     # OBS_id = '1'+ obs_type[im_type] + str(int(project_cycle)) + str(int(run_counter)).rjust(2, '0') + pointNum.rjust(5,'0')
     OBS_id = get_obs_id(img_type=im_type, project_cycle=project_cycle, run_counter=run_counter, pointing_num=pointNum)
 
-    h_prim['OBJECT'] = str(int(project_cycle)) + pointNum.rjust(8, '0')
+    h_prim['OBJECT'] = str(int(project_cycle)) + pointNum.rjust(7, '0')
     h_prim['OBSID'] = OBS_id
     # h_prim['TELFOCUS'] = 'f/14'
     h_prim['EXPTIME'] = exptime