courses:ast100:ip
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| courses:ast100:ip [2025/12/08 22:01] – shahal | courses:ast100:ip [2025/12/10 09:49] (current) – asad | ||
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| ====== Image processing for astrophotography ====== | ====== Image processing for astrophotography ====== | ||
| - | ===== - Stacking | + | The data and the Siril script can be found in this google drive folder: https://drive.google.com/drive/folders/1vW2kqUQbHBEYf9KfGACMadruxLblsAUO |
| - | + | ||
| - | - Install DSS by downloading the installer appropriate for your OS from this page: | + | |
| - | | + | |
| - | (scroll to the bottom → " | + | |
| - | + | ||
| - | - Download some raw data from here: (add link) | + | |
| - | + | ||
| - | - Open the **DeepSkyStacker** app | + | |
| - | (⚠️ Not “Live DeepSkyStacker”) | + | |
| - | + | ||
| - | - Click on <color # | + | |
| - | Select the downloaded FITS photos. These are your **light frames**. | + | |
| - | + | ||
| - | - Click on **Dark**, **Flat**, and **Offset/ | + | |
| - | + | ||
| - | - Make sure that all images in every tab are selected in the bottom panel. | + | |
| - | If not, click on **Check all** in the second section of the left sidebar. | + | |
| - | + | ||
| - | - Click on <color # | + | |
| - | + | ||
| - | - Uncheck **Stack after registering** | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | - Go to the **Advanced** tab → click **Check the number of detected stars**. | + | |
| - | DSS will detect stars in the reference frame. | + | |
| - | + | ||
| - | - If the number is **less than 60**, lower the detection threshold and click **Detect stars** again. | + | |
| - | A good range is **60–300 stars**. | + | |
| - | + | ||
| - | {{: | + | |
| - | + | ||
| - | - After confirming the star count is good, return to the main window. | + | |
| - | + | ||
| - | - Click on **Stack checked pictures**. | + | |
| - | + | ||
| - | - Choose the default stacking settings unless otherwise instructed, then click **OK**. | + | |
| - | + | ||
| - | - DSS will begin stacking. When finished, it will open the stacked autosave image. | + | |
| - | + | ||
| - | - Save the final stacked file as: | + | |
| - | * 32 bit FITS file | + | |
| - | (recommended for further processing in Siril/PixInsight/Photoshop) | + | |
| - | + | ||
| - | ----- | + | |
| - | + | ||
| - | ===== End of DSS Section ===== | + | |
| - | + | ||
| ===== Processing and Stacking Monochrome Astronomical Images in Siril ===== | ===== Processing and Stacking Monochrome Astronomical Images in Siril ===== | ||
| Line 143: | Line 94: | ||
| * Run SPCC. | * Run SPCC. | ||
| - | === 9.2 LPCC (Local Photometric Calibration) === | ||
| - | * Go to **Color → Linear Photometric Color Calibration**. | ||
| - | * Load local Gaia index file. | ||
| - | * Run LPCC. | ||
| - | |||
| - | ---- | ||
| ==== 10. Stretching the Image ==== | ==== 10. Stretching the Image ==== | ||
| Line 188: | Line 133: | ||
| ==== 13. Re-Adding Stars ==== | ==== 13. Re-Adding Stars ==== | ||
| - | * Go to **Image Processing → Pixel Math**. | + | * Go to **Image Processing → Star Processing → star recomposition**. |
| * Combine: | * Combine: | ||
| ``starless + stars`` | ``starless + stars`` | ||
courses/ast100/ip.1765256508.txt.gz · Last modified: by shahal