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| en:ost:ccds:grunddaten [2023/09/15 21:29] – [Main cameras] rhainich | en:ost:ccds:grunddaten [2024/05/25 18:21] (current) – [Planetary/Guiding cameras] rhainich |
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| ==== CMOS cameras ==== | ==== CMOS cameras ==== |
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| 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. |
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| 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. | 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. |
| [{{ :ost:ccds:qhy485c.jpg?300| Our QHY 485C }}] | [{{ :ost:ccds:qhy485c.jpg?300| Our QHY 485C }}] |
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| | | **Skyris 445** | **QHY 485C** | **ST-i** | **ZWO ASI174** | | | | **Skyris 445** | **QHY 485C** | **ST-i** | **ZWO ASI174** | **ZWO ASI220** | |
| | **Model number** | Skyris 445C | QHY-5-III-485C | ST-i monochrome | ZWO ASI174MM Mini | | | **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 $\mu \text{m}$ | | | **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 | | | **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 | | | **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’ | | | **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 | | | **Sampling** | 3.4 Pixel per arcsec | 5.8 Pixel per arcsec | 2.3 Pixel per arcsec | 2.9 Pixel per arcsec | | |
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| === Cameras that are no longer in daily use === | === Cameras that are no longer in daily use === |
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| === QHY 600M === | === 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. |
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| | **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]]. |
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| | 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 === | === ST-7 & ST-8 === |
| A filter wheel with the following filters can be attached to the ST-7 and ST-8: | A filter wheel with the following filters can be attached to the ST-7 and ST-8: |
| ====== DSLR ====== | ====== DSLR ====== |
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| 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]]. |
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| ==== Basic data ==== | ==== Basic data ==== |