Four timesteps from the final 7 seconds before #Venus vanished behind a distant roof structure today: each image 1/3.2 second at f/2.8 and ISO 400 with maximum digital zoom yielding an equivalent focal length of about 3 meters, pictures in full resolution and cropped, no further processing. The spectral #dispersion is clearly visible; unfortunately Venus 'hit' the structure from the side, so cutting off the red and leaving only the green/blue upper part as in https://spaceweathergallery2.com/indiv_upload.php?upload_id=231191 didn't happen. #AtmosphericalOptics

Another cool #Bochum #sunset show today, with three sunpots - groups 4087, 4090 and 4092 - visible and at times appearing double thanks to #AtmosphericalOptics ... and there was more coming! 1/2

And the #Bochum #sunset show goes on ... today the #sunspot group (1)4087 was very prominent, and there was #AtmosphericalOptics galore: sometimes it stretched or duplicated the spot vertically while at other times a #GreenSegment 'lifted off' from the Sun's upper limb. More pictures in https://www.facebook.com/groups/788806561196660/posts/9689217151155512/ and even more in https://www.facebook.com/dan.fischer.393/posts/pfbid0b5cQw5CTKqrLis6EVvCX4rw6pGujnKBgS6iBcq2FxBPiYwdddLW1Y1dyVqPVvGT6l