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en:ost:ccds:grunddaten [2026/04/01 10:10] rhainichen:ost:ccds:grunddaten [2026/04/01 10:54] (current) – [Technical Data] rhainich
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 Our main cameras are CMOS cameras developed specifically for astrophotography. For deep-sky imaging we use two QHY 600Ms, which offer, among other things, a full-frame sensor, very high quantum efficiency, very low readout noise, and a very low dark current. For these cameras we also have an off-axis guider, one filter wheel with 9 positions, and one filter wheel with 7 positions. Our main cameras are CMOS cameras developed specifically for astrophotography. For deep-sky imaging we use two QHY 600Ms, which offer, among other things, a full-frame sensor, very high quantum efficiency, very low readout noise, and a very low dark current. For these cameras we also have an off-axis guider, one filter wheel with 9 positions, and one filter wheel with 7 positions.
  
-A QHY 268M serves as the main camera for our two [[en:ost:spektrograph:grunddaten|spectrographs]]. We also have a veTEC 533C from Omegon and a range of guiding and planetary cameras. These are used primarily for solar observations or as guiding cameras (see e.g. [[en:ost:ccds:maximdl#Guiding|here]]) in combination with the QHY 600M and the spectrographs.+A QHY 268M serves as the main camera for our two [[en:ost:spektrograph:grunddaten|spectrographs]]. We also have a veTEC 533C from Omegon and a range of guiding and planetary cameras. These are used primarily for solar observations or as guiding cameras (see e.g. [[en:ost:ccds:maximdl#Guide Tab|here]]) in combination with the QHY 600M and the spectrographs.
  
 We have dedicated a separate article to the [[en:ost:ccds:setup|assembly]] of some of the cameras. We have dedicated a separate article to the [[en:ost:ccds:setup|assembly]] of some of the cameras.
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 |< 100% 19%>| |< 100% 19%>|
-|                                    |             **ST-7**                              **ST-8**                               **STF-8300**                 |  **Skyris 445**   **SBIG ST-i** +|                                    ^     **ST-7**     ^     **ST-8**     ^     **STF-8300**     ^  **Skyris 445**   **SBIG ST-i** 
-**Model number**                   | ST-7XME-D                             | ST-8XME                               | STF-8300M                                  Skyris 445C     | ST-i Monochrome        +**Model number**                   | ST-7XME-D        | ST-8XME          | STF-8300M            | Skyris 445C      | ST-i Monochrome | 
-**Pixel size**                     | 9 $\mu \text{m}$ x 9 $\mu \text{m}$   | 9 $\mu \text{m}$ x 9 $\mu \text{m}$   | 5.4 $\mu \text{m}$ x 5.4 $\mu \text{m}$    3.75 x 3.75     | 7.4 x 7.4   +**Pixel size [µm]**                | 9                | 9                | 5.4                  | 3.75             | 7.4             
-**Number of pixels**               | 765 x 510                             | 1530 x 1020                           | 3326 x 2504                                1280 x 960      | 648 x 486   +**Number of pixels**               | 765 x 510        | 1530 x 1020      | 3326 x 2504          | 1280 x 960       | 648 x 486       
-**Total chip size**                | 6.9 mm x 4.6 mm                       | 13.8 mm x 9.2 mm                      | 17.96 mm x 13.52 mm                        6.26 x 5.01     | 4.8 x 3.6   +**Total chip size [mm]**           | 6.9 x 4.6        | 13.8 x 9.2       | 17.96 x 13.52        | 6.26 x 5.01      | 4.8 x 3.6       
-**Field of view with CDK20**       | 6.9x 4.6                          | 13.7x 9.2                         | 17.9x 13.5                             6.2 x 5.0       | 4.8 x 3.6  +**Field of view with CDK20 [']**   | 6.9 x 4.6        | 13.7 x 9.2       | 17.9 x 13.5          | 6.2 x 5.0        | 4.8 x 3.6       
-**Sampling**                       | 1.9 pixels per arcsec                 | 1.9 pixels per arcsec                 | 3.1 pixels per arcsec                      3.4             | 2.3 |+**Sampling [pixels/'']**           | 1.9              | 1.9              | 3.1                  | 3.4              | 2.3             |
  
  
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 ===== Special Features ===== ===== Special Features =====
-  * An adaptive optics unit, the AO-7, can be placed in front of the ST-7 and ST-8, which can be used for guiding and optimising image quality (see e.g. [[en:ost:ccds:ccdops#Self-Guiding mit der AO-7|here]]).+  * An adaptive optics unit, the AO-7, can be placed in front of the ST-7 and ST-8, which can be used for guiding and optimising image quality (see e.g. [[en:ost:ccds:ccdops#Self-Guiding with the AO-7|here]]).
   * In addition to the main imaging chip, the ST-7 and ST-8 contain a secondary guiding chip that allows the telescope to automatically track an object (see e.g. [[en:ost:ccds:ccdops#Guiding|here]]) while the main CCD captures the actual images.   * In addition to the main imaging chip, the ST-7 and ST-8 contain a secondary guiding chip that allows the telescope to automatically track an object (see e.g. [[en:ost:ccds:ccdops#Guiding|here]]) while the main CCD captures the actual images.
   * The off-axis guiders of the STF-8300 and the QHY 600M have the advantage of being mounted in front of the respective filter wheel, meaning that guiding is independent of the guide star's brightness in the selected filter. As a result, fainter objects can be used as guide stars with these two cameras than is possible with the ST-7 or ST-8.   * The off-axis guiders of the STF-8300 and the QHY 600M have the advantage of being mounted in front of the respective filter wheel, meaning that guiding is independent of the guide star's brightness in the selected filter. As a result, fainter objects can be used as guide stars with these two cameras than is possible with the ST-7 or ST-8.
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