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| ===== 2026 observing campaign ===== | ===== 2026 observing campaign ===== | ||
| - | THEMIS 2026 observing campaign will take place approximately from early September to mid-september, 2026, lasting for about 70 days. The 1st half of 2026 shall be mostly dedicated to the on-going installation and commissioning of the [[technical: | + | THEMIS 2026 observing campaign will take place approximately from early September to mid-November, 2026, lasting for about 70 days. The 1st half of 2026 shall be mostly dedicated to the on-going installation and commissioning of the [[technical: |
| ==== 2026 campaign schedule ==== | ==== 2026 campaign schedule ==== | ||
| Line 9: | Line 9: | ||
| The 2026 campaign shall observe the following schedule: | The 2026 campaign shall observe the following schedule: | ||
| * December 2025: opening of call to apply for observation time during the 2025 campaign. See bellow for how to apply. | * December 2025: opening of call to apply for observation time during the 2025 campaign. See bellow for how to apply. | ||
| - | * January XXth, 2026: proposal deadline for " | + | |
| - | * February 12th, 2026: proposal deadline for " | + | |
| * March 2026: observation time allocation announced to applicants | * March 2026: observation time allocation announced to applicants | ||
| - | * Spring 2026: commissioning of the spectro-imaging | + | * Spring 2026: commissioning of the [[technical: |
| - | * ** September-mid-November 2026: observation campaign**: | + | * ** September |
| /* * [[observation: | /* * [[observation: | ||
| [[call25: | [[call25: | ||
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| ==== Call for observation time during the 2026 campaign | ==== Call for observation time during the 2026 campaign | ||
| - | **The call for the 2025 observing campaign is now open!** | + | <color red > ** The call for the 2025 observing campaign is now open! ** </ |
| Interested researchers are encouraged to check the **[[# | Interested researchers are encouraged to check the **[[# | ||
| Line 28: | Line 28: | ||
| The submission of proposals is specific to the category of users one belongs, based on [[: | The submission of proposals is specific to the category of users one belongs, based on [[: | ||
| - | * " | + | * " |
| - | * Interested observers shall complete the **[[http:// | + | * Interested observers shall complete the **[[http:// |
| - | | + | * Deadline: February |
| - | * " | + | * " |
| * Applicants shall follow the instructions of the **[[http:// | * Applicants shall follow the instructions of the **[[http:// | ||
| - | | + | * Deadline: January |
| - | * " | + | * " |
| - | * Interested observers shall complete the **[[http:// | + | * Interested observers shall complete the **[[http:// |
| - | | + | * Deadline: February |
| - | As soon as the appropriate proposal refereeing procedures of each community and TAC have been passed, applicants shall quickly be informed of their application outcomes. During the fall of 2025, the integration of [[technical: | + | As soon as the appropriate proposal refereeing procedures of each community and TAC have been passed, applicants shall quickly be informed of their application outcomes. During the spring |
| < | < | ||
| - | < | + | < |
| - | < | + | /* < |
| 2025 Campaign schedule: | 2025 Campaign schedule: | ||
| <a href=" | <a href=" | ||
| <a href=" | <a href=" | ||
| - | </ | + | </ |
| </ | </ | ||
| Line 58: | Line 58: | ||
| [[technical: | [[technical: | ||
| * A slowed-down (100Hz) version of the same system can be used to stabilize Mercury. | * A slowed-down (100Hz) version of the same system can be used to stabilize Mercury. | ||
| - | * At the moment | + | * While it is not possible to use TAO over the solar limb (or for neighboring prominences), during the 2025 campaign, tests have been carried to observe prominences while TAO was focused on granulation in an offset disc region of THEMIS FOV. Even though the TAO isoplanatic region is located far from the targeted prominence, TAO nonetheless provided significant improvements, |
| === MTR2 in spectroscopy mode === | === MTR2 in spectroscopy mode === | ||
| - | |||
| In this mode, up to 4 (old) EMCCD Andor iXon camera (512x512) and up to 2 (new) Andor Zyla (2kx2k) cameras are available. Both 6 cameras can be setup and used at the same time (with their respective specs), | In this mode, up to 4 (old) EMCCD Andor iXon camera (512x512) and up to 2 (new) Andor Zyla (2kx2k) cameras are available. Both 6 cameras can be setup and used at the same time (with their respective specs), | ||
| - | [[technical: | + | [[technical: |
| === MTR2 in spectropolarimetry mode: === | === MTR2 in spectropolarimetry mode: === | ||
| - | In this mode, 3 cameras (hence 3 wavelengths) at most are available, from the above list. It is possible to combine polarimetric and non-polarimetric cameras. | + | THEMIS polarimetric analysis scheme is based on a full-Stokes analyzer located at the F1 prime focus. For any solar polarization state to measure, the output of the analyzer is made of dual superimposed complementary linear polarizations. Thanks to THEMIS " |
| - | [[technical: | + | |
| Regarding the available analysis software: | Regarding the available analysis software: | ||
| - | | + | |
| - | * Thanks to V. Bommier, a basic magnetic field inversion software package (running locally in IDL) is available. | + | |
| === Broadband imaging context camera: === | === Broadband imaging context camera: === | ||
| - | It is running concurrently with the spectrograph. Current setup is for 656 nm (red), but this can be changed optionally to G-band or other. | + | THEMIS BBI fast camera (40 frames/ |
| + | |||
| + | === Available analysis softwares === | ||
| + | |||
| + | * Knox Thompson image reconstruction for BBI | ||
| + | * Reconstructed spectral map quick-looks for on site analysis, to be adapted to specific wavelength. | ||
| + | * Stokes map quick-looks | ||
| + | * Thanks to V. Bommier, a basic magnetic field inversion software package (running locally in IDL) is also available. | ||
| - | == 2024 known problems (and solutions) == | + | /* == 2024 known problems (and solutions) == |
| * The optical diffusion problem that was detected in Sept 2024 (mostly affecting the He D3 observations) has been identified and corrected (November 2024). | * The optical diffusion problem that was detected in Sept 2024 (mostly affecting the He D3 observations) has been identified and corrected (November 2024). | ||
| - | * The data acquisition issue in polarimetric modes was tracked down to a bad synchronisation between the analyzer rotation and the camera exposure. This has been solved at the cost of slowing down the acquisition loop (roughly a factor 2 slower). This issue has been affecting all the September 2024 runs. | + | * The data acquisition issue in polarimetric modes was tracked down to a bad synchronisation between the analyzer rotation and the camera exposure. This has been solved at the cost of slowing down the acquisition loop (roughly a factor 2 slower). This issue has been affecting all the September 2024 runs. */ |
