The Sun today, large group coming round - 1 image attached

1 view
Skip to first unread message

William Bottaci

unread,
Jun 25, 2026, 8:32:54 AM (6 days ago) Jun 25
to croydo...@googlegroups.com
The Sun today reveals a large naked eye group coming round the eastern limb, which was seen by Europe's Solar Orbiter (SolO) a few days ago on the far side of the sun. This post serves to show the sun at 9 am this morning, and also as a notice that after quite a while we now have something worthwhile to see. I used eclipse type glasses to view the group but I still needed a pair or two of sunglasses.

  Altitude      36º
  Diameter   31º 28'
  Distance   1.016 AU (we're now further from the sun than average - we are closest in winter, January 3rd and furthest in summer, July 4th - so the sun's diameter is still slowly getting smaller. Solar eclipses in winter tend towards annular rather than full, depending on the moon's own wandering, but those in the summer last longer.)

Canon R7 with RF 100-500mm L IS lens with x1.4 tele-extender (700mm), f/10, 1/200 sec, ISO 200, hand-held stabilised. Baader solar film filter (remarkably the fitting is identical between this lens hood and that of my Skywatcher ED 80 f/7.5 dew shield, though the mount is adjustable).

As is usual for us low-lying urbanites there is a significant difference in seeing across different parts of the sun's disk, so I took a series of 10 photos and looked at each image before taking another 10. By the time I got to 40 I deemed that there were a few good enough ones. I thought to choose one as a base and possibly cut and paste one or two groups onto it, best of all, but in this case a single image was sufficient.
I'm still refining my processing procedure and it could be that when time allows I may have one that looks a bit better.

Needs to be viewed at 100% size for the extra detail, using any viewer other than a browser as most if not all show a 'quick' degraded image. Any view of the downloaded image is going to show more detail.

Thank you for looking.
William

=CanR7_094767_M3-L2-160.jpg (209K)=
CanR7_094767_M3-L2-160.jpg

paul stenning

unread,
Jun 25, 2026, 10:52:22 AM (6 days ago) Jun 25
to croydo...@googlegroups.com
Good to see some new spots on the equator,nice to see where the magnetic flux rope has burst through the photosphere forming the pairing of positive and negative spots.

Virus-free.www.avg.com

--
You received this message because you are subscribed to the Google Groups "croydonastro" group.
To unsubscribe from this group and stop receiving emails from it, send an email to croydonastro...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/croydonastro/CAHfnR27gosd5FB80BmPiUM_SRkhgzPUBrcE7ir2k-Gwrf-4kEA%40mail.gmail.com.
Reply all
Reply to author
Forward
0 new messages