update README and Catalog_example.py

README.md

 # CSST主巡天仿真软件
 
 ## 重要更新或问题修复：
-* v3.0版本相关内容：（待补充）
+* 2024.05.15: 更新至v3.0版本，新功能具体内容见[软件说明文档](https://kdocs.cn/l/cjyiU0SXGyn2)。
 * 2023.07.29: 更新至v2.1版本，内容包括：
     * 加入杂散光模块，config文件中添加开关：enable_straylight_model: True/False
     * 调整WCS定义：x：E, y：-N
@@ -32,11 +32,19 @@
 
 ## 相关数据
 
-* PSF采样数据下载：[百度云盘](https://pan.baidu.com/s/1_2gbO6-d7x001_FMqZ1tfw)，提取码：2awt
+<!-- * PSF采样数据下载：[百度云盘](https://pan.baidu.com/s/1_2gbO6-d7x001_FMqZ1tfw)，提取码：2awt
 
 * 测试用数据，C6星系SED PCA主成分，及恒星SED模板库下载：[百度云盘](https://pan.baidu.com/s/15B5H-r39vbIBIXdpin63Wg)，提取码：nxsy
 
-* 滤光片及无缝光谱相关数据：[百度云盘](https://pan.baidu.com/s/1JROggg8IKf27i1DnwTaPAw)，提取码：07v5
+* 滤光片及无缝光谱相关数据：[百度云盘](https://pan.baidu.com/s/1JROggg8IKf27i1DnwTaPAw)，提取码：07v5 -->
+* 数据链接：https://pan.baidu.com/s/1cVHovDs4cMsDWWNkoZDRDA?pwd=y63x
+    * PSF数据库：
+        * 多色成像: CSSTSim_C9/PSFCube/set1_dynamic 
+        * 无缝光谱: CSSTSim_C9/PSFCube/SLS_PSF_PCA_fp
+    * C9星表数据：
+        * 恒星星表：CSSTSim_C9/starcat_C9
+        * 星系星表：CSSTSim_C9/galaxycat_C9/cat2CSSTSim_bundle-50sqDeg
+        * 类星体星表：CSSTSim_C9/galaxycat_C9/qsosed
 
 ## 相关会议及workshop
 

catalog/Catalog_example.py

@@ -23,7 +23,7 @@ class Catalog(CatalogBase):
     star_SED_path : str
         path to the star SED data
     objs : list
-        a list of ObservationSim.MockObject (Star, Galaxy, or Quasar)
+        a list of observation_sim.mock_objects (Star, Galaxy, or Quasar)
         NOTE: must have "obj" list when implement your own Catalog
 
     Methods
@@ -41,10 +41,10 @@ class Catalog(CatalogBase):
         ----------
         config : dict
             configuration dictionary which is parsed from the input YAML file
-        chip: ObservationSim.Instrument.Chip
-            an ObservationSim.Instrument.Chip instance, can be used to identify the band etc.
+        chip: observation_sim.instruments.Chip
+            an observation_sim.instruments.Chip instance, can be used to identify the band etc.
         **kwargs : dict
-            other needed input parameters (in key-value pairs), please modify corresponding
+            any other needed input parameters (in key-value pairs), please modify corresponding
             initialization call in "ObservationSim.py" as you need.
 
         Returns
@@ -70,10 +70,10 @@ class Catalog(CatalogBase):
         """Read in all objects in from the catalog file(s).
 
         This is a must implemented method which is used to read in all objects, and
-        then convert them to ObservationSim.MockObject (Star, Galaxy, or Quasar).
+        then convert them to observation_sim.mock_objects (Star, Galaxy, or Quasar).
 
         Currently, 
-        the model of ObservationSim.MockObject.Star class requires:
+        the model of observation_sim.mock_objects.Star class requires:
             param["star"] : int
                 specify the object type: 0: galaxy, 1: star, 2: quasar
             param["id"] : int
@@ -88,7 +88,7 @@ class Catalog(CatalogBase):
                 load_norm_filt(obj) function must be implemented to load the filter
                 throughput of that particular photometric system
 
-        the model of ObservationSim.MockObject.Galaxy class requires:
+        the model of observation_sim.mock_objects.Galaxy class requires:
             param["star"] : int
                 specify the object type: 0: galaxy, 1: star, 2: quasar
             param["id"] : int
@@ -119,7 +119,7 @@ class Catalog(CatalogBase):
                 Sersic index for galaxy bulge component
             param['g1'], param['g2']: float
                 Reduced weak lensing shear components (valid for shear type: catalog)
-        the model of ObservationSim.MockObject.Galaxy class requires:
+        the model of observation_sim.mock_objects.Galaxy class requires:
             Currently a Quasar is modeled as a point source, just like a Star.
 
         NOTE: To construct an object, according to its type, just call:
@@ -133,7 +133,7 @@ class Catalog(CatalogBase):
         Parameters
         ----------
         **kwargs : dict
-            other needed input parameters (in key-value pairs), please modify corresponding
+            any other needed input parameters (in key-value pairs), please modify corresponding
             initialization call in "ObservationSim.py" as you need.
 
         Returns
@@ -161,7 +161,7 @@ class Catalog(CatalogBase):
 
         Parameters
         ----------
-        obj : ObservationSim.MockObject
+        obj : instance of a particular class in observation_sim.mock_objects
             the object to get SED data for
         **kwargs : dict
             other needed input parameters (in key-value pairs), please modify corresponding
@@ -198,7 +198,7 @@ class Catalog(CatalogBase):
 
         Parameters
         ----------
-        obj : ObservationSim.MockObject
+        obj : instance of a particular class in observation_sim.mock_objects
             the object to get thourghput data for
 
         Returns