A busy Jupiter tonight!

[iceman]

Tonight (27th July) is a very busy night on Jupiter with 3 events worth observing and imaging.

(all times AEST)

1. The Wesley Impact Scar will be visible between about 10pm and midnight. It transits the CM at about 10:40pm.

2. Also tonight, at 11:24pm (lasting for about 8 minutes), Io's shadow eclipses Europa.

3. Then later, at 12:14am (lasting for about 8 minutes), Io occults (passes in front of) Europa.

A very busy night worth staying up for. Good luck for steady seeing at your place!

[jjjnettie]

Thanks for the heads up Mike it's well appreciated.

[h0ughy]

lets hope it is clear an no repeat of Sat night

[GrahamL]

Thanks mike
is the WIS a visual object in a 12" anyone ? I notice a few mentioning popping this one in small refactors ?? .. looks like the jet stream has eased a little tonight and the clouds have gone somewhere else for the evening for a change.

[pgc hunter]

Yes. I saw it on Saturday night with my 12", Its appearance is not unlike a galilean moon shadow transit, just not as crisply defined or as dark, it's more a dark grey than black.

[mozzie]

thanks for the heads up what a cracker of a night in the pod and ready for some viewing
mozzie

[seanliddelow]

I first saw jupiter on saturday night
Its is a awesome planet:eyepop:

[telecasterguru]

Thanks for the info Mike.

Frank

[iceman]

Out here now, seeing is absolutely terrible right now. I can hear the breeze in the trees and the jetstream is right overhead.

Not looking good to capture ANYTHING!

[mozzie]

i here you mike a slight breeze here to still ill keep on looking i only need clear seeing for a few seconds to hopefully see the impact
mozzie

[andrew2008]

Just put the scope out to cool down and jumped online for a few minutes hoping almost to find out this very info.

Thanks mike

[cookie8]

I am absolutely with you Mike. Aweful seeing here. Unable to focus even with 2x barlow. Terrible terrible...:mad2:

[astronut]

Well, I'm looking at Jupiter at the moment and with 200x I can see the BIG HIT Jupiter has.
WOW.
Anything above 200X is a waste of time.:thumbsup:

[andrew2008]

Managed to get a look at 220x. Much more than that and it wouldn't have been possible. 300x was too soft.

[GrahamL]

Don't think I've ever spent so much time on jupiter very spectacular sight :thumbsup: .Very polar ,I was looking no where near the right spot for a while , only when I revisited anthonys image a few times i figured out how far off I was.Very small but quite distinctive when you find it.

My 14 xw was probably the most pleasing eyepiece to view it through
though the 8.5 xf did a great job to
Gave it away about 11.30.. seeing average or a little better .

well worth a look with a moderately sized scope :thumbsup:

[JethroB76]

Looked great down here @230-285x

[Phil Hart]

well the seeing in melbourne was great (as the jetstream chart would indicate) but the clouds were terrible! one of my most ridiculous observing attempts ever, but ultimately successful :)

setup when i got home at 10:20pm under near total cloud cover, but sure enough i got a few 30 second glimpses through very small cloud breaks around 10:40pm at transit time and when the seeing was good the impact site was clearly visible at 120x in my 8" dob (my first observation of this after poor seeing on saturday).

then clouded out completely for ages, but got a nice clear break after 11:30pm. even though the spot had rotated a long way i could see it clearly in the moments of good seeing (which were very good for a central city location). bumped the mag up to 200x and watched, even until 11:50pm (70 mins after transit) when the clouds returned.

the comparison with a shadow transit is certainly reasonably accurate. the better the seeing, the smaller and darker the scar appears. at transit time it did appear elongated, but later on as it rotated i could not discern that anymore.

Phil

[MrB]

Very easily seen at 100x in my 6" dob. Didn't even have to look for it, it just stuck out.
Glad to have finally had a chance to see it!

[bird]

No chance from here tonight, complete cloud cover. sigh.

[Liz]

Having a night in Townsville tonight (Tues) with local Scout Group (50 + kids ... yikes) and wondering if the 'Wesley Impact Scar' is visible early ..... 7-8 pm?? :)

Ta Mike .... knew it would be a bit too low, but thought maybe a slight chance

[iceman]

Unfortunately not, Liz.

It won't be visible until between around 3am-5am tomorrow morning. Before that, it's too early (ie: 6pm) and Jupiter will be too low.

[stephenb]

Does the south polar region rotate as the same rate as the other regions?

[rat156]

Pretty much so, otherwise the planet would shear apart. There are slight variations due to the different flows of the upper atmosphere, but not enough to notice unless your observing long term.

Cheers
Stuart

[MrB]

EDIT: Mike beat me to it, I must've garbled my numbers afterall. Dunno where I went wrong.

Yeah should be Liz, if it's high enough.
If I haven't garbled the numbers, the strike should still be visible 'till 13:32 UT, dunno what that is your time... 23:32?