Dark mark in Jupiter's atmosphere?

[george7378]

Hi, did anyone else see the strange dark mark in Jupiter's Northern Belt tonight? I saw it at about 21:00 UT (22:00 BST) when it had just passed the meridian. Any images of Jupiter tonight?

Thanks.

[John]

Yep - I saw that - there is another on the other side of the disk now but still on the NEB now plus the GRS moving towards the western limb. Good details visible here tonight.

[NAFK]

Europa? It was crossing Jupiter around that time.

[steelfixer]

I have a photo of it in my thread 'first galaxy' in the lounge if you want one.

graham

[John]

Europa? It was crossing Jupiter around that time.

Europa was in the southern hemisphere as it transited. These dark "knots" are on the north side of the northern equatorial belt.

[Smeg]

Its probably a bunch of mini monolith's.

[DarkerSky]

I'm loving the dark ovals on the northern cusp of the NEB. When you study the one at about CM 265 degrees you can see it has some lighter material enfolded around its southern edge. I also spotted a darker preceeding tail of material into the NEB from it at the weekend in my 16"

[John]

I'm loving the dark ovals on the northern cusp of the NEB. When you study the one at about CM 265 degrees you can see it has some lighter material enfolded around its southern edge. I also spotted a darker preceeding tail of material into the NEB from it at the weekend in my 16"

I agree Seb - I'm finding them more interesting than the GRS at the moment. Tracking their rotation rate compared with other features is interesting too. Jupiter just gives so much interest and changes literally as you observe

[Nexus 6]

Both have been showing well for me, I used my newish 13mm Ethos with the 925 this morning, the larger of the two is very black to my eye although its partner is still dark all the same. I did make out 4 bands on the planet although I suspect I may have seen others fleetingly but was not too sure so will have to try again, had some stable views of the moons with Ganymede in particular showing a nice disc, not seen it look that good too many times.

Am hopeful of some more views like this over the next few nights.

[cotterless45]

Yep, saw this at 11pm last night, along with the grs and Io rising . Followed the dark mark as Jupiter rotated, looked pretty dark.

[dweller25]

Clouds

[cotterless45]

Yep, last night within an hour it clouded up, this morning the clouds

returned followed by fog ( sign of heat coming).GGGGRRRRR!!! Just about to look at Mars.

However looks good for the next few nights.

[george7378]

So they are quite popular! The one I saw was just above the GRS. I could also see the Junior GRS above it too!

[Nexus 6]

Will be having another look at them tonight and the rest of the week if the weather holds George, it does look as if that may be possible