en:ost:telescope:ts-apo

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en:ost:telescope:ts-apo [2024/02/19 22:26] – [130mm Apochromat from Telescope-Service] rhainichen:ost:telescope:ts-apo [2024/07/08 10:32] (current) – rhainich
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-FIXME **This page is not fully translated, yet. Please help completing the translation.**\\ //(remove this paragraph once the translation is finished)// 
- 
 ====== 130mm Apochromat from Telescope-Service ====== ====== 130mm Apochromat from Telescope-Service ======
  
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 === Suitable Mounts: === === Suitable Mounts: ===
  
-Articles related to respective mounts are linked, their setup often described in combination with one of our other telescopes. However, the fundamental steps of assembling each mount are universal.+Articles related to specific mounts are linked, and their setup is often described in combination with one of our other telescopes. However, the basic steps for assembling each mount are universal.
  
     * [[en:ost:telescope:c11_bedienung| Celestron CGE-Pro]]     * [[en:ost:telescope:c11_bedienung| Celestron CGE-Pro]]
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 === Reducer + QHY600M with Filter Wheel and Off-Axis Guider === === Reducer + QHY600M with Filter Wheel and Off-Axis Guider ===
  
-This setup is the standard for deep-sky observations as it provides the widest field of view. The reducer used is the [[https://www.teleskop-express.de/de/astrofotografie-und-fotografie-15/bildfeld-korrektoren-fuer-teleskope-138/ts-optics-refraktor-0-74x-reducer-korrektor-fuer-apo-und-ed-fuer-vollformat-5120 | TS-Optics 0.74x Reducer]] with:+This setup is the standard for deep-sky observations as it provides the widest field of view. The reducer used is the [[https://www.teleskop-express.de/en/astrophotography-and-photography-15/imaging-correctors-for-telescopes-138/ts-optics-refractor-0-74x-reducer-corrector-for-apo-ed-for-full-sized-sensors-5120 | TS-Optics 0.74x Reducer]] with:
     * camera side M48x0.75 external thread with 55mm working distance     * camera side M48x0.75 external thread with 55mm working distance
     * camera side M76x1 external thread with 105.7mm working distance     * camera side M76x1 external thread with 105.7mm working distance
     * telescope side M88x1 external thread and M82x1 internal thread     * telescope side M88x1 external thread and M82x1 internal thread
  
-The reducer reduces the focal ratio to f/5.2. The "drawback" of this setup is that the extension tube between the tube and the focuser must be removed, otherwise, achieving focus becomes impossible. This process requires care as the threads are delicate. Refer to the following two images for comparison:+The reducer reduces the focal ratio to f/5.2. The "drawback" of this setup is that the extension tube between the tube and the focuser must be removed, otherwise, achieving focus becomes impossible. This process requires care as the threads are delicate. For a comparison, see the following two images:
  
 <WRAP group> <WRAP group>
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 </WRAP> </WRAP>
  
-For this setup, the following adapters are required, to be mounted in the order as seen from the telescope:+This setup requires the following adapters to be mounted in the order seen from the telescope:
  
 <WRAP group> <WRAP group>
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 It is important to note that before mounting the above adapter combination, the long M48 adapter, usually present on the reducer, must be unscrewed to expose the M76 thread. It is important to note that before mounting the above adapter combination, the long M48 adapter, usually present on the reducer, must be unscrewed to expose the M76 thread.
 +
 +**Note:** If the off-axis guider is not used, a 20mm M68 extension must be used instead of the 10mm extension. 
  
 </WRAP> </WRAP>
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 | 7 | M68a -> M62a Adapter            | 5    | | 7 | M68a -> M62a Adapter            | 5    |
  
-[{{ ost:apo:apo_reducer_adapter_combination.jpg | Adapter combination as in the table (ascending from left to right) }}]+[{{ ost:apo:apo_reducer_adapter_combination.jpg | Adapter combination as shown in the table (ascending from left to right) }}]
 </WRAP> </WRAP>
 </WRAP> </WRAP>
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 [{{ ost:apo:apo_reducer_adapter_names.jpg?700 | **Placeholder image (must be replaced)** }}] [{{ ost:apo:apo_reducer_adapter_names.jpg?700 | **Placeholder image (must be replaced)** }}]
  
-The same principles apply here as mentioned above, with the adapter combination being slightly different:+The same principles apply here as above, but the adapter combination is slightly different:
  
 <WRAP group> <WRAP group>
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 </WRAP> </WRAP>
  
-This adapter combination has an optical path length of 87.2 mm when the Varilock is set to 16.5-17.25 mm. This, combined with the QHY600M, which has a back focus of 17.5 mm, and the installed filters, results in a total working distance of 105.7 mm behind the M76 thread of the reducer.+This adapter combination has an optical path length of 87.2 mm when the Varilock is set to 16.5-17.25 mm. Combined with the QHY600M, which has a back focus of 17.5 mm, and the installed filters, this gives a total working distance of 105.7 mm behind the M76 thread of the reducer.
  
 \\ \\
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 <WRAP group> <WRAP group>
 <WRAP half column> <WRAP half column>
-The QHY600M can also be mounted on the APO without additional filter holders, filter wheels, etc. Only the QHY camera adapter with M54 internal thread and a 2" eyepiece holder from QHY with M54 external thread on one side and M84 internal thread on the other side are necessary. The M48 thread then fits onto the M84 thread of the reducer.+The QHY600M can also be mounted on the APO without additional filter holders, filter wheels, etc. All you need is the QHY camera adapter with M54 internal thread and a QHY 2" eyepiece holder with M54 external thread on one side and M84 internal thread on the other side. The M48 thread then fits onto the M84 thread of the reducer.
  
 |< 100% - >| |< 100% - >|
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 | 2 | 2" Eyepiece Holder        | 33 | | 2 | 2" Eyepiece Holder        | 33 |
  
-Together with the 17.5 mm back focus of the camera, this achieves the required working distance from the M48 of the reducer of 55±1 mm.+Together with the camera's 17.5 mm back focus, this provides the required working distance of 55±1 mm from the M48 of the reducer.
  
 </WRAP> </WRAP>
 <WRAP half column> <WRAP half column>
-[{{ ost:apo:APO_adapter_QHY600_without_filter.jpg | Adapter combination as in the table (ascending from left to right). Additionally, the adapter of the reducer with the M48 thread is mounted on the right. }}]+[{{ ost:apo:APO_adapter_QHY600_without_filter.jpg | Adapter combination as shown in the table (ascending from left to right). Additionally, the adapter of the reducer with the M48 thread is mounted on the right. }}]
 </WRAP> </WRAP>
 </WRAP> </WRAP>
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 === Flattener + QHY600M with Filter Wheel and Off-Axis Guider === === Flattener + QHY600M with Filter Wheel and Off-Axis Guider ===
  
-[{{ ost:apo:apo_reducer_adapter_names.jpg?700 | **Placeholder image (must be replaced)** }}]+[{{ ost:apo:apo_flattener_adapter_names.jpg?700 | APO with flattener, QHY600 with Filter Wheel and Off-Axis Guider, and all necessary adapters }}]
  
-The [[https://www.teleskop-express.de/de/astrofotografie-und-fotografie-15/bildfeld-korrektoren-fuer-teleskope-138/ts-optics-refraktor-1-0x-flattener-gen-2-fuer-apo-grossformat-m92-anschluss-4047 | Flattener]] is also from TS-Optics and maintains the focal length unchanged:+The [[https://www.teleskop-express.de/en/astrophotography-and-photography-15/imaging-correctors-for-telescopes-138/ts-optics-refractor-1-0x-flattener-gen-2-for-apo-large-format-m92-connection-4047 | flattener]] is also from TS-Optics, keeps the focal length unchanged and has the following threads:
     * Camera side M48x0.75 external thread with 55mm working distance     * Camera side M48x0.75 external thread with 55mm working distance
     * Camera side M54x0.75 internal thread with 62.5mm working distance     * Camera side M54x0.75 internal thread with 62.5mm working distance
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 | 5 | M68a -> M62a Adapter                     | 5         | | 5 | M68a -> M62a Adapter                     | 5         |
  
-As mentioned earlier, the working distance from the M78 thread is 77.5mm, with the camera along with the filter wheel, filter, and off-axis guider having a back focus of 56mm. The remaining 21.5mm are bridged by the above adapter combination.+As mentioned earlier, the working distance from the M78 thread is 77.5mm, with the camera including filter wheel, filter, and off-axis guide having a back focus of 56mm. The remaining 21.5mm is bridged by the above adapter combination. 
 + 
 +**Note:** If the off-axis guide is not used, an additional 10mm M68 extension must be inserted between the fine adjustment rings. 
  
 </WRAP> </WRAP>
 <WRAP half column> <WRAP half column>
-[{{ ost:apo:apo_flattener_adapter_combinations.jpg | Adapter combination as in the table (ascending from left to right) }}]+[{{ ost:apo:apo_flattener_adapter_combinations.jpg | Adapter combination as shown in the table (ascending from left to right) }}]
 </WRAP> </WRAP>
 </WRAP> </WRAP>
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 </WRAP> </WRAP>
  
-Together, this results in an optical path length of approximately 58.8 mm depending on the tilter position and installed fine-tuning rings. Combined with the 17.5 mm back focus of the QHY600M and the installed filter, this leads to 77.5 mm from the M78 thread.+Together, this results in an optical path length of approximately 58.8 mm, depending on the tilter position and fine-tuning rings installed. Combined with the 17.5 mm back focus of the QHY600M and the installed filter, this results in 77.5 mm from the M78 thread.
  
 \\ \\
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 <WRAP group> <WRAP group>
 <WRAP half column> <WRAP half column>
-A tension-free mounted solar filter for visual observations from [[https://www.baader-planetarium.com/en/sun/white-light/astf-astrosolar-telescope-filter-od-5.0-(80mm---280mm).html | Baader Planetarium]] is used. This filter is simply mounted in front of the objective. Any eyepiece and camera can then be used. However, the Herschel prism described below usually allows for better imaging quality.+For visual observations, a [[https://www.baader-planetarium.com/en/solar/whitelight/astf-astrosolar-telescope-filter-od-5.0-(80mm---280mm).html | Baader Planetarium tension-free solar filter]] can be used. This filter is simply mounted in front of the objective. Any eyepiece and camera can be used. However, the Herschel prism described below usually provides better image quality.
 </WRAP> </WRAP>
 <WRAP half column> <WRAP half column>
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 === Herschel Prism === === Herschel Prism ===
  
-We also have a [[https://www.baader-planetarium.com/en/baader-cool-ceramic-safety-herschelprisma-mark-ii.html | Herschel Prism Mark II from Baader Planetarium]], which allows us to observe the sun in white light with excellent quality. The Herschel prism can be equipped with different filters, allowing it to be configured for visual observations as well as camera observations with very short exposure times. Details about the Herschel prism and its operation can be found in the associated [[en:ost:telescope:herschel_prism | article]].+We also have a [[https://www.baader-planetarium.com/en/baader-cool-ceramic-safety-herschel-prism-markii.html | Herschel Prism Mark II from Baader Planetarium]], which allows us to observe the Sun in white light with excellent quality. The Herschel prism can be equipped with different filters, so that it can be configured for visual observations as well as for camera observations with very short exposure times. Details about the Herschel prism and its operation can be found in the associated [[en:ost:telescope:herschel_prism | article]].
  
-The Herschel prism can be used in many different configurations, for example, with and without a Barlow lens. However, the standard procedure is to insert it directly into the 2" eyepiece clamp of the APO.+The Herschel prism can be used in many different configurations, for example with or without a Barlow lens. However, the standard procedure is to insert it directly into the 2" eyepiece clamp of the APO.
  
 <WRAP group> <WRAP group>
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 </WRAP> </WRAP>
  
-Different models can also be used on the camera side. The prism has a 2" eyepiece clamp for holding corresponding accessories.+Different camera models can also be used here. The prism has a 2" eyepiece clamp for mounting accessories.
  • en/ost/telescope/ts-apo.1708381579.txt.gz
  • Last modified: 2024/02/19 22:26
  • by rhainich