Sun spot activity currently ramping up. Time to take out the telescope and go for some early evening sun spotting from the balcony.
A note of WARNING and DISCLAIMER: only use certified sun filter foil, I am using Seymour Solar Filter, grade ND5, available here. Be responsible and operate on your own risk.
![](https://nolle.engineering/wp-content/uploads/2022/06/IMG_8820-1024x768.jpg)
Telescope equipped with 3D printed sun filter, maximum telescope diameter 183mm.
![](https://nolle.engineering/wp-content/uploads/2022/06/image.png)
![](https://nolle.engineering/wp-content/uploads/2022/06/image-1.png)
![](https://nolle.engineering/wp-content/uploads/2022/06/image-2.png)
That’s the sunspot image as of 2022/06/23, not ours (lacking a camera adapter), curtesy NASA:
![](https://nolle.engineering/wp-content/uploads/2022/06/SDO_HMIIF_1024-1024x1024.jpg)