en:ost:telescope:probleme

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en:ost:telescope:probleme [2021/12/07 16:39] – [ST-8: shutter error] rhainichen:ost:telescope:probleme [2022/07/25 10:57] (current) – [Telescope:] rhainich
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 ===== Telescope: ===== ===== Telescope: =====
  
 +==== Focuser of the CDK20 does not run the complete range of ~35000μ ====
 +
 +<WRAP group>
 +<WRAP twothirds column>
 +**Problem description:**
 +PWI3 shows clearly negative position values when driving in or the focuser does not run in the positive range (when driving out) up to the maximum ~35000μ.
 +
 +**Solution:**
 +The focuser has "swallowed" and the encoder delivers wrong values. This can be fixed by clicking on ''Home'' (see picture) in the Focuser tab of PWI3 under ''Find Home and Reset'' and then on ''YES''. This will reset the focuser and reinitialize the home position, restoring the normal focus range.
 +</WRAP>
 +<WRAP third column>
 +{{ ost:software:pwi3_homing_focuser.png }}
 +</WRAP>
 +</WRAP>
 ==== Wobbling Camera/spectrograph ==== ==== Wobbling Camera/spectrograph ====
  
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 ===== Cameras: ===== ===== Cameras: =====
  
 +<WRAP group>
 +<WRAP twothirds column>
 ==== Ice on the camera ==== ==== Ice on the camera ====
- 
-[{{ ost:ccds:m15_eis.jpeg?300|Exposure of the cluster M15 with the ST-8. The left side clearly shows icing on the CCD.}}] 
  
 **Description of the problem:** **Description of the problem:**
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 **Solution:**  **Solution:** 
-The cameras' interior is not in a vacuum and moisture can get in, causing icing on the cooled CCD chip. To prevent this, the cameras have dry cartouches with desiccants. If icing appears, the cartouches need to be regenerated ([[en:ost:telescope:setup#ccd_cameras|see this article]]). During that observational night, wait for approximately one hour until the ice sublimates from the CCD chip.+The cameras' interior is not in a vacuum and moisture can get in, causing icing on the cooled CCD chip. To prevent this, the cameras have dry cartouches with desiccants. If icing appears, the cartouches need to be regenerated ([[en:ost:ccds:grunddaten#maintenance|see this article]]). During that observational night, wait for approximately one hour until the ice sublimates from the CCD chip.
  
 ==== ST-8: shutter error ==== ==== ST-8: shutter error ====
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 In this case the communication between the camera and //CCDops// is disturbed or the sensors for the shutter position do not work properly. Therefore, the software does not know whether the shutter is closed or not. It also could be that the shutter is indeed not moving as expected. In each case, it is often sufficient to switch off the camera and to disconnect it from the power supply. However, sometimes it is necessary to detach the camera from the telescope and to very carefully shake the camera a bit. Afterwards, the sensors of the shutter usually deliver proper data again.  In this case the communication between the camera and //CCDops// is disturbed or the sensors for the shutter position do not work properly. Therefore, the software does not know whether the shutter is closed or not. It also could be that the shutter is indeed not moving as expected. In each case, it is often sufficient to switch off the camera and to disconnect it from the power supply. However, sometimes it is necessary to detach the camera from the telescope and to very carefully shake the camera a bit. Afterwards, the sensors of the shutter usually deliver proper data again. 
  
-<WRAP group> 
-<WRAP twothirds column> 
 ==== Maxim DL: Two SBIG cameras cannot be simultaneously connected ==== ==== Maxim DL: Two SBIG cameras cannot be simultaneously connected ====
  
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 </WRAP> </WRAP>
 <WRAP third column> <WRAP third column>
 +[{{ ost:ccds:m15_eis.jpeg | Exposure of the cluster M15 with the ST-8. The left side clearly shows icing on the CCD. }}]
 +\\
 +\\
 +\\
 [{{ ost:software:maximdl:options_menu_cameras_marked.png | Camera options menu in //Maxim DL// }}] [{{ ost:software:maximdl:options_menu_cameras_marked.png | Camera options menu in //Maxim DL// }}]
 </WRAP> </WRAP>
 </WRAP> </WRAP>
 +
 ==== CCDops does not find the filter wheel ==== ==== CCDops does not find the filter wheel ====
  
 **Description of the problem:** **Description of the problem:**
-''CCDops'' does not find the filter wheel of the STF8300 camera although the filter wheel is rotating when the power is switched on. +//CCDops// does not find the filter wheel of the STF8300 camera although the filter wheel is rotating when the power is switched on. 
  
 **Solution:**  **Solution:** 
-The filter wheel needs to be reinitialized. The corresponding menu can be found via //Filter// and //Filter Setup//. Select the "FW-5" filter wheel from the drop down menu and confirm the settings with a click on the //OK// button. Afterwards the filter wheel should work again. +The filter wheel needs to be reinitialized. The corresponding menu can be found via ''Filter'' and ''Filter Setup''. Select the "FW-5" filter wheel from the drop down menu and confirm the settings with a click on the ''OK'' button. Afterwards the filter wheel should work again. 
  
  
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-====== Gelöste Probleme, die nicht mehr auftreten sollten ======+====== Resolved problems that should no longer occur ======
  
 ++++ GM 4000 Mount: Tracking error | ++++ GM 4000 Mount: Tracking error |
  • en/ost/telescope/probleme.1638895185.txt.gz
  • Last modified: 2021/12/07 16:39
  • by rhainich