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Jupiter tonight

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#1 REC

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Posted 24 January 2013 - 02:19 PM

FYI...just looked at my Jupiter App and there's some good stuff going on tonight. These are EST

Io Transits at 7pm
Ganymede Transits at 9pm
Red spot Transits at 7pm

Have fun:)

bob

#2 John Kuraoka

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Posted 24 January 2013 - 02:51 PM

Sounds great! Sadly, I'll miss it - it's been cloudy here all day with a chance of rain through the weekend. My kid's elementary school had a star party scheduled for Friday, but it was cancelled.

#3 Mark Peterman

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Posted 24 January 2013 - 03:15 PM

What is the name of your jupiter app? I used to have JupSat (I believe) but have since lost it.

#4 csrlice12

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Posted 24 January 2013 - 03:18 PM

the only belts we're seeing tonight are cloudbelts.....

#5 cadfour

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Posted 24 January 2013 - 03:40 PM

Why do I get

Io Transits at 6pm
Ganymede Transits at 9pm
Red spot disappears behind planet at 6:30pm

on my older version of Starry Night Pro 3.1? Usually its on the money.

#6 Tony Flanders

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Posted 24 January 2013 - 04:43 PM

All times below are UT.
23:08 UT = 6:08 pm EST = 3:08 pm PST
4:18 UT = 11:18 pm EST = 8:18 pm PST (on the previous day)

The GRS transits around 0:18 UT = 7:18 pm EST = 4:18 PST

Jan. 24
23:08 I.Tr.I
Jan. 25
0:15 I.Sh.I
1:18 I.Tr.E
2:10 III.Tr.I
2:26 I.Sh.E
4:18 III.Tr.E
6:41 III.Sh.I
8:55 III.Sh.E

#7 REC

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Posted 24 January 2013 - 05:16 PM

I'm using the App I bought from S&T for $3.00

Say's Io begins transit at 18:07 = 6pm and the shadow starts at 19:15= 7pm
Ganymede starts at 21:08 = 9pm
Red spot transits 19:20 = 7pm

At least that's the way I interpret it?

#8 Tony Flanders

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Posted 24 January 2013 - 05:52 PM

I'm using the App I bought from S&T for $3.00

Say's Io begins transit at 18:07 = 6pm and the shadow starts at 19:15= 7pm
Ganymede starts at 21:08 = 9pm
Red spot transits 19:20 = 7pm

At least that's the way I interpret it?


Yes, that agrees with what I just posted within 1 minute for the Moon events and 2 minutes for the GRS. Moon transits are slow events; it takes a while for something as big as Io to slide in front of Jupiter. And the GRS is even vaguer. So for all practical purposes, the agreement is perfect.

However, when you're standing out in the cold, 15 minutes is a long time. So I wouldn't round 7:15 down to 7 pm.

#9 kenrenard

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Posted 24 January 2013 - 05:56 PM

I'm set up 13f with wind. Thanks for the tips

#10 herrointment

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Posted 24 January 2013 - 07:37 PM

Try THIS

Download is 3/4 toward the bottom of the page. It's easier to use than it may first appear.

If you can't take a look in person check out Night Skies Network and chances are good someone will be showing Jupiter
during the evening.

#11 Tony Flanders

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Posted 24 January 2013 - 07:58 PM

Very cool -- thanks for the tip. I'm in taking a break, but I'll go out again from 9 to 9:30 to watch Ganymede start its transit and Io's shadow finish its transit.

The seeing is pretty abysmal, as one would expect during a cold spell (currently 18F, heading down to zero). And the wind periodically shakes the scope too much to see. Nonetheless, fine views of the GRS and Io's shadow popped out several times for several seconds at a stretch.

I also wasn't expecting Callisto so near Jupiter, passing right by the disk on the north side.

#12 Dave Mitsky

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Posted 24 January 2013 - 08:17 PM

I watched Io begin its transit shortly after 6:00 p.m. EST this evening through a 6" f/8 Orion SkyQuest XT6 Dob and an 8-24mm Vixen zoom eyepiece.

At 7:15 p.m., I witnessed a -7.4 magnitude flare from Iridium 58.

At approximately 7:30 p.m., the GRS was to the west of the CM and Europa, Ganymede, and Callisto to the east of Jupiter's disk. Callisto was far to the north of the disk. It formed a somewhat unusual triangle with Ganymede, which was also close to the planet, and Europa, which was far to the east. Europa was approximately co-linear with Io's shadow, which lay just south of the SEB. I used a magnification of 150x.

I also looked at M42, NGC 1981, Sigma Orionis and Struve 761, and the Moon. Aristarchus, Vallis Schröteri, Kepler, Wargentin, and other craters were easily seen. The Tycho and Copernicus ray systems were quite prominent, as was the mysterious Reiner Gamma.

http://cs.astronomy....oon/409253.aspx (Aristarchus)

http://cs.astronomy....oon/410648.aspx (Wargentin)

http://solarsystem.n...lanets&IM_ID... (Reiner Gamma)

Dave Mitsky

#13 Dave Mitsky

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Posted 24 January 2013 - 08:48 PM

I upped the magnification to 200x (6mm Tele Vue Delos). Io's transit is over and Io, Ganymede, and Callisto are "surrounding" Jupiter in a very unusual configuration. Io's shadow transit is still underway.

Dave Mitsky

#14 Dave Mitsky

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Posted 24 January 2013 - 09:27 PM

I can no longer see Io's shadow, although the transit is not quite finished. Ganymede has made its ingress. The seeing is surprisingly good tonight and the views through the humble little 6" Newtonian at 200x are really excellent.

Dave Mitsky

#15 Dave Mitsky

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Posted 24 January 2013 - 11:32 PM

Ganymede has cleared Jupiter's disk. Io now appears to be farther from Jupiter than Callisto does, whereas the opposite was true when Io's shadow transit ended. The seeing remains very good and I even can see a bit of color in the NEB at 200x.

The temperature is currently 15 degrees Fahrenheit and the "real feel" temperature is 7 degrees.

Dave Mitsky

#16 csrlice12

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Posted 25 January 2013 - 10:27 AM

all I saw was clouds.... :bawling:

#17 Mark Peterman

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Posted 25 January 2013 - 01:50 PM

Try THIS

Download is 3/4 toward the bottom of the page. It's easier to use than it may first appear.

If you can't take a look in person check out Night Skies Network and chances are good someone will be showing Jupiter
during the evening.


Excellent, thanks!

#18 Wcclower

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Posted 25 January 2013 - 03:51 PM

Was out last night, saw IO transit and best ever viewing of the GRS!

#19 Dave Mitsky

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Posted 25 January 2013 - 10:29 PM

There's also the Jupiter's Moons utility at http://www.skyandtel...t/3307071.html# and the Juplet at http://www.shallowsky.com/jupiter/

I have a very handy free app called QuickSky that shows the positions of the satellites of Jupiter and Saturn, along with some other useful information on the planets.

#20 Dave Mitsky

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Posted 26 January 2013 - 01:10 PM

Curt Renz posts information on Galilean satellite events daily at http://www.curtrenz.com/jupiter04.html

Dave Mitsky

#21 jfaust75

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Posted 26 January 2013 - 03:15 PM

is quicksky for ipod or android? i couldnt find it on google play.

#22 Dave Mitsky

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Posted 26 January 2013 - 05:06 PM

QuickSky

Dave Mitsky

#23 jfaust75

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Posted 26 January 2013 - 05:08 PM

ahh so it is for ipod/iphone......dont have one of those, darn

#24 REC

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Posted 27 January 2013 - 10:03 AM

That's quicksky is pretty good! Pretty much shows me the same thing as the one I bought from S&T, plus it also has Saturn as well.

Thanks for the tip!
Bob






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