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--- en:ost:ccds:grunddaten [2021/03/29 09:22] – [Features] rhainich
+++ en:ost:ccds:grunddaten [2024/05/25 18:21] (current) – [Planetary/Guiding cameras] rhainich
@@ Line 5: / Line 5: @@
 ==== CMOS cameras ====
-Our newcomer, the QHY 600M is a CMOS camera that was developed especially for astrophotography. It is our new deep-sky camera and offers among other things a full format sensor, a very high quantum efficiency, a very low readout noise and a very low dark current. For this camera we also have an off-axis-guide and a filter wheel with 9 positions.
+Our main cameras are CMOS cameras designed specifically for astrophotography. For deep sky imaging we use two QHY 600M, which offer a full frame sensor, very high quantum efficiency, very low readout noise and very low dark current. For these cameras, we also have an off-axis guide, a 9-position filter wheel, and a 7-position filter wheel.
+As main camera for our two [[en:ost:spektrograph:grunddaten| spectrographs]] serves a QHY 268M. Furthermore we have a QHY 485C and a ZWO ASI174.
 ==== CCD Cameras ====
-Furthermore, four CCD cameras (ST-7, ST-8, STF-8300M, ST-i) from SBIG (//Santa Barbara Instrument Group//) and one CCD camera (Skyris 445C) from //Celestron// are available.
+Furthermore, four older CCD cameras (ST-7, ST-8, STF-8300M, ST-i) from SBIG (//Santa Barbara Instrument Group//) and one CCD camera (Skyris 445C) from //Celestron// are available.
-The ST-7 and ST-8 are deep-sky cameras, but due to their relatively small field of view they are rarely used. The STF-8300M is used as main camera for our two [[de:ost:spektrograph:grunddaten|Spektrographs]].
+The ST-7, ST-8, and STF-8300M are deep-sky cameras, but due to their relatively small field of view they are rarely used currently.
-The ST-i and the Skyris 445C are "planetary cameras" which allow very short exposure times. They are mainly used as guiding cameras (see e.g. [[de:ost:ccds:ccdops#Guiding|here]] or [[de:ost:ccds:maximdl#Guiding|here]]) in connection with the QHY 600M and the spectrographs.
+\\
+The ST-i, the QHY 485C, and the Skyris 445C are "planetary cameras" which allow very short exposure times. They are mainly used for solar observations or as guiding cameras (see e.g. [[de:ost:ccds:ccdops#Guiding|here]] or [[de:ost:ccds:maximdl#Guiding|here]]) in connection with the QHY 600M and the spectrographs.
+All cameras can be controlled via [[de:ost:ccds:maximdl| Maxim DL]]. For the SBIG cameras [[de:ost:ccds:ccdops| CCDOPS]] is also available as control software. We have dedicated a separate article to the [[en:ost:ccds:setup|assembly]] of some cameras.
-All cameras can be controlled via [[de:ost:ccds:maximdl| Maxim DL]]. For the SBIG cameras [[de:ost:ccds:ccdops| CCDOPS]] is also available as control software.
 ==== Basic data ====
 ===  Main cameras ===
+[{{ :ost:ccds:qhy268m.jpg?300| Our QHY 268 }}]
-/*|< 65% 20% 15% 15% 15%  - >|*/
+|< 100% 27%>|
-|                                  |             **ST-7**                |             **ST-8**                  |              **STF-8300**                 |             **QHY 600M**                 |
+|                                  |             **QHY 600M (2x)**             |             **QHY 268M**                  |
-| **Model number**                 | ST-7XME-D                           | ST-8XME                               | STF-8300M                                 | QHY 600M PRO-L                       |
+| **Model number**                 | QHY 600M PRO-L & QHY 600M PH              | QHY 268M-PH                               |
-| **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 $\mu \text{m}$   | 3.76 $\mu \text{m}$ x 3.76 $\mu \text{m}$ |
+| **pixel size**                   | 3.76 $\mu \text{m}$ x 3.76 $\mu \text{m}$ | 3.76 $\mu \text{m}$ x 3.76 $\mu \text{m}$ |
-| **Number of pixels**             | 765 x 510                           | 1530 x 1020                           | 3326 x 2504                               | 9576 x 6388                              |
+| **Number of pixels**             | 9576 x 6388                               | 6280 x 4210                               |
-| **Total size of the chip**       | 6.9 mm x 4.6 mm                     | 13.8 mm x 9.2 mm                      | 17.96 mm x 13.52 mm                       | 36 mm x 24 mm                  |
+| **Total size of the chip**       | 36 mm x 24 mm                             | 23.45 mm x 15.7 mm                        |
-| **Field of view with the CDK20** | 6.9’ x 4.6’                         | 13.7’ x 9.2’                          | 17.9’ x 13.5’                             | 35.8’ x 23.4’                             |
+| **Field of view with the CDK20** | 35.8’ x 23.4’                             | 23.3’ x 15.6’                             |
-| **Sampling**                     | 1.9 Pixel per arcsec                | 1.9 Pixel per arcsec                  | 3.1 Pixel per arcsec                      | 4.5 Pixel per arcsec                    |
+| **Sampling**                     | 4.5 Pixel per arcsec                      | 4.5 Pixel per arcsec                      |
 ===  Planetary/Guiding cameras ===
-[{{ :ost:ccds:ccd_klein.jpg?300| Our SBIG ST-8 }}]
+[{{ :ost:ccds:qhy485c.jpg?300| Our QHY 485C }}]
+|< 100% 27%>|
+|                                    |              **Skyris 445**               |          **QHY 485C**                 |                **ST-i**                 |          **ZWO ASI174**               |  **ZWO ASI220**  |
+| **Model number**                   | Skyris 445C                               | QHY-5-III-485C                        | ST-i monochrome                         | ZWO ASI174MM Mini Mono         |  ZWO ASI220MM Mini Mono   |
+| **pixel size**                     | 3.75 $\mu \text{m}$ x 3.75 $\mu \text{m}$ | 2.9 $\mu \text{m}$ x 2.9 $\mu \text{m}$ | 7.4 $\mu \text{m}$ x 7.4 $\mu \text{m}$ | 5.86 $\mu \text{m}$ x 5.86 $\mu \text{m}$ | 4 $\mu \text{m}$ x 4 $\mu \text{m}$ |
+| **Number of pixels**               | 1280 x 960                                | 3864 x 2180                           | 648 x 486                               | 1936 x 1216       | 1920 x 1080   |
+| **Total size of the chip**         | 6.26 mm x 5.01 mm                         | 11.2 mm x 6.3 mm                      | 4.8 mm x 3.6 mm                         | 11.3 mm x 7.1 mm       | 7,68 mm x 4,32 mm  |
+| **Field of view with the CDK20**   | 6.2’ x 5.0’                               | 11.2’ x 6.3’                          | 4.8’ x 3.6’                             | 11.2’ x 7.1’       |    |
+| **Sampling**                       | 3.4 Pixel per arcsec                      | 5.8 Pixel per arcsec                  | 2.3 Pixel per arcsec                    | 2.9 Pixel per arcsec                  |     |
-|                                    |              **Skyris 445**               |                **ST-i**                 |
+=== Cameras that are no longer in daily use ===
-| **Model number**                   | Skyris 445C                               | ST-i monochrome                         |
-| **pixel size**                     | 3.75 $\mu \text{m}$ x 3.75 $\mu \text{m}$ | 7.4 $\mu \text{m}$ x 7.4 $\mu \text{m}$ |
+[{{ :ost:ccds:ccd_klein.jpg?300| Our SBIG ST-8 }}]
-| **Number of pixels**               | 1280 x 960                                | 648 x 486                               |
+|< 100% 27%>|
-| **Total size of the chip**         | 6.26 mm x 5.01 mm                         | 4.8 mm x 3.6 mm                         |
+|                                  |             **ST-7**                |             **ST-8**                  |              **STF-8300**                 |
-| **Field of view with the CDK20**   | 6.2’ x 5.0’                               | 4.8’ x 3.6’                             |
+| **Model number**                 | ST-7XME-D                           | ST-8XME                               | STF-8300M                                 |
-| **Sampling**                       | 3.4 Pixel per arcsec                      | 2.3 Pixel per arcsec                    |
+| **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 $\mu \text{m}$   |
+| **Number of pixels**             | 765 x 510                           | 1530 x 1020                           | 3326 x 2504                               |
+| **Total size of the chip**       | 6.9 mm x 4.6 mm                     | 13.8 mm x 9.2 mm                      | 17.96 mm x 13.52 mm                       |
+| **Field of view with the CDK20** | 6.9’ x 4.6’                         | 13.7’ x 9.2’                          | 17.9’ x 13.5’                             |
+| **Sampling**                     | 1.9 Pixel per arcsec                | 1.9 Pixel per arcsec                  | 3.1 Pixel per arcsec                      |
@@ Line 56: / Line 72: @@
 === QHY 600M ===
-For the new QHY 600M we have installed the following filters in the filter wheel:
+We have two filter wheels for the QHY 600Ms. The first is a QHY CFW3-XL with the following Bessel filters:
+^ Filter position | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
+^ Filter | H_alpha | OIII | SII | U | B | V | R | I | Clear |
+^ Comment | Narrowband | Narrowband | Narrowband | Broadband | Broadband | Broadband | Broadband | Broadband | |
+The transmission curves of the UBVRI filters can be found on the website of //Baader Planetarium//: [[https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/63/5/ubvri-bessel-filtersatz-photometrisch-1f1.jpg|Filter Transmission]]. The filter curves of the bandpass filters are similar to those of the STF-8300.
-| **Filter position** |  1  |  2  |  3  |  4  |  5  |  6  |  7  |  8  |  9  |
+The second is a QHY CFW3-L with the following SLOAN/SDSS filters:
-| **Filter**          |  H_alpha  |  OIII  |  SII  |  U  |  B  |  V  |  R  |  I  |  Clear  |
+^ Filter position | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
-| **Comment** |  narrow band  |  narrow band  |  narrow band  |  broad band  |  broad band  |  broad band  |  broad band  |  broad band  |
+^ Filter | u' | g' | r' | i' | z-s' | y' | Clear |
+^ Comment | Wideband | Wideband | Wideband | Wideband | Wideband | Wideband | |
+The transmission curves of the ugriz' filters can be found on the website of //Baader Planetarium//: [[https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/68/6/sloan-sdss-ugriz-filtersatz-photometrisch-09b.jpg|Filter Transmission]].
+We also have a [[https://www.baader-planetarium.com/de/baader-ufc-(universal-filter-changer).html | UFC-filter-changing-system]] for our RASA 11 V2, which can be equipped with 50mmx50mm square filters. Currently we have a complete set of SLOAN/SDSS filters (see above) and H-alpha, O-III, S-II [[https://assets.baader-planetarium.com/media/extendware/ewimageopt/media/inline/4a/b/35-4nm-f-3-ultra-highspeed-filtersatz-cmos-optimiert-h-alpha-o-iii-s-ii-383.jpg | ultra highspeed filter]].
 === ST-7 & ST-8 ===
 A filter wheel with the following filters can be attached to the ST-7 and ST-8:
@@ Line 90: / Line 113: @@
 ====== DSLR ======
-For short time exposures and lucky imaging there is the digital (single) reflex camera (DSLR): Canon EOS 700D. It has been optimized for amateur astronomers by //Baader Planetarium// by changing the used filters. The transmission properties of the original Canon filters in comparison to the optimized ones can be found at the Baader web page [[http://www.baader-planetarium.de/sektion/s45/bilder/vergleich_400d_baader_bcf_gross.jpg|click to view the image]].
+For short time exposures and lucky imaging there is also a digital (single) reflex camera (DSLR): Canon EOS 700D. It has been optimized for amateur astronomers by //Baader Planetarium// by changing the used filters. The transmission properties of the original Canon filters in comparison to the optimized ones can be found at the Baader web page [[http://www.baader-planetarium.de/sektion/s45/bilder/vergleich_400d_baader_bcf_gross.jpg|click to view the image]].
 ==== Basic data ====
@@ Line 112: / Line 135: @@
 Furthermore, one can take full-HD videos with an ISO sensitivity of max. 6,400 (can be expanded up to 12,800). The camera can be controlled by a rotatable and slewable 7,7 cm LCD touchscreen or by a computer interface. Exposure series can be taken at a maximum speed of approx. 5 images per second, which can be maintained for about 22 exposures (JPEG format) or 6 exposures (RAW format).
+It is also possible to remotely control the camera [[en:dslr:tethered_shooting|by a computer]].