Tootfinder

Today's #Bochum #sunset with the three #sunspot groups left to right (1)4498, 4496 and 4492: https://spaceweather.com/images2026/29jul26/hmi1898.gif

After missing three #sunsets in #Bochum, here is today's - with THREE #sunspot groups on the disk now: top left to bottom right they are 4492, 4493 (which grew rapidly; see https://nitter.net/Bermani22/status/2079227596554809584) and 4489. Watch the last two disappear in later timesteps in https://bsky.app/profile/cosmos4u.bsky.social/post/3mr45ljgazc2e (where 4493 is misidentifed - because of https://spaceweather.com/images2026/20jul26/hmi1898.gif - as 4491).

Standing oscillations in a resonant #sunspot atmosphere captured by integral field spectroscopy: https://www.frontiersin.org/journals/astronomy-and-space-sciences/articles/10.3389/fspas.2026.1826789/full -> "These results demonstrate the suitability of solar integral field units for spatially mapping sunspot wave properties, with the NaID1/D2 lines providing a novel vantage point for resonance cavity and energy flux diagnostics in the lower solar atmosphere."

During today's #Bochum #sunset the big #sunspot (1)4482 was seen in the lower right while at "10 o'clock" - above the church spire - the new group (1)4489 has just appeared on the disk. Later timestep: https://bsky.app/profile/cosmos4u.bsky.social/post/3mqkjezmlp22g

Here we go again ... another #Bochum #sunset today, and the three #sunspot groups (1)4515, 13 and 17 - https://www.facebook.com/groups/seestar/posts/1065357899609825/ - conveniently placed in the clear strip.

The two #sunspot groups 4478 (below) and 4479 right after #sunrise in #Bochum, Germany, minutes ago - two further timesteps in https://bsky.app/profile/cosmos4u.bsky.social/post/3mpn3yanylk2e

Against all odds another pretty clear #sunset in #Bochum Tuesday - and now three #sunspot groups are evident near the disk's center, from the left (1)4515, 13 and 17: https://spaceweather.com/images2026/25aug26/hmi1898.gif

The two big #sunspot groups today around 15:00 UTC, taken with a #BridgeCamera: see https://skyweek.wordpress.com/2026/06/28/allgemeines-live-blog-ab-dem-28-juni-2026/#Jul01 for the exact technical data.