An eruption occurred between spot groups 4117 and 4118 6.12.-7.02 UT 4"/f-11 Sundancer 2 Asi 678mono + Reducer

Further examination of the image from July 2 shows the interstellar object 3I/ATLAS is not cometary. An image from 21.48 UT 37x60 seconds exposed. However, it cannot be ruled out that there is still a tiny coma that can only be detected by very large telescopes.

Large protuberance with rapid change from today 4"/f-11 Sundancer 2 Asi 678mono 6.39-7.19 UT

Sun 2025-07-12 6.41 - 7.50 UT

Curved prominences from 2025-07-14 8.01-8.31 UT

the large prominence of today 8.40 UT - a colored mosaic

The surprise at first glance 2025-08-05 7.05 UT 4"/f-11+ Reducer Sundancer 2 Asi 678m 10sec (5,5 ms Gain 5)

Great solar flare 2025-08-05 7.05 -7.20 UT observed at AZM Martinsberg

After reading that comet 3I/ATLAS is particularly rich in CO2, we photographed the comet on August 28 using a blue filter. In the 16x100-second image, we were able to detect a 48“ long tail that is relatively high in contrast for the first 25” Gerald Rhemann, Michael Jäger

For the past few days, the interstellar comet 3I/ATLAS has been displaying a blue-green gas coma measuring 2.5 arcminutes across. A short tail was also visible on September 9 when photographed with the 12"/f-3.6 astrograph in Namibia. image Gerald Rhemann, Michael Jäger

C/2025 A6 Lemmon 2025-09-17 2.30 UT LRGB 25/4/4/4 min 8"RASA Asi 294m 2x2bin, 8m4, coma 10' tail 1,7° pa 293 Michael Jäger, Gerald Rhemann

Comet Lemmon will be spectacular. If we can already see it now, what will it be like in October? C/2025 A6 Lemmon 2025-09-21 2.40 UT 11" RASA Asi 294m mosaic 9/9min Michael Jäger, Gerald Rhemann

C/2025 A6 Lemmon 2025-09-30 RGB image 2.40 UT 30min 8" RASA Asi 294m Michael Jäger, Gerald Rhemann

Comet Lemmon is now 6m5, on deep images we found the tail >12°. C/2025 A6 Lemmon 2025-10-03 2.24 UT RGB 25min Zeiss-Milvus f-135/2.8 Asi 294 field 8x6° Michael Jäger, Gerald Rhemann

C/2025 A6 Lemmon 2025-10-04 3.00 UT mosaic 10/10min filter blue Zeiss-Milvus f-135/2.8 Asi 294m tail 12° Michael Jäger, Gerald Rhemann

C/2025 A6 Lemmon 2025 oct 4 1.45 UT LRGB 450/90/90/90sec 16"/3.2 QHY 600 2x2 bin Michael Jäger, Gerald Rhemann G00

Observation in the morning sky with bright moonlight and high clouds! C/2025 A6 Lemmon 2025-10-10 3.00 UT 20x25sec 11" RASA QHY600 Michael Jäger, Gerald Rhemann

C/2025 A6 Lemmon 2025-10-13 17.45 UT LRGB 8/1/1/1 min 11" RASA QHY 600 Michael Jäger, Gerald Rhemann