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| Image info | |
| Name: | Sunspot region 3421 |
| Date: | 05.09.2023 |
| Catalogue: | none |
| Filter: | 540nm continuum filter and ND1.8 filter |
| Class: | Solar system |
| Comment: | Equipment: 130mm f/7 apo, Baader Herschel wedge, Baader FFC Barlow at 3.5X, ZWO ASI 174MM-mini camera. The data is extracted from 22 videos of two minutes each, taken over a period of four hours. |
| Taken by: | Rainer |
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