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Jupiter (Planet, est. mag -2.5, est. to be in Cetus, Est. RaDec 23:53:25, -1:42:60)
Observer: Byung Hoon Kang (e-mail: astronist@usa.net, web: http://web.syr.edu/~bkang)
Instrument: 8-inch Schmidt-Cassegrain reflector Location: Syracuse, NY, USA
Light pollution: moderate Transparency: good Seeing: good
Time: Fri Jul 3 09:10:00 1998 UT Obs. no.: 360
Celestron Powerstar 8, 78x --- I can only see east sky at the porch of my apartment room. Tonight, there was the Jupiter at east sky.
Jupiter (Planet)
Observer: Dave Mitsky (e-mail: djm28@psu.edu)
Instrument: 3-inch refractor Location: Harrisburg, PA, USA
Light pollution: moderate Transparency: good Seeing: good
Time: Tue Jan 20 23:45:00 1998 UT Obs. no.: 296
Before observing Comet 55/P Tempel-Tuttle I beheld Jupiter, three of the Galilean moons, and Mars in close proximity low in the west southwest. Seeing two planets in the same field of view was quite a sight in a small refractor at 35 and 70x. Mars and Jupiter were only 0.2 degrees apart and won't be this close again for 20 years.
Jupiter (Planet)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: good
Time: Thu Sep 11 09:00:00 1997 UT Obs. no.: 224
Tossing and turning after a rough day at work ("Why didn't I say *that* in the meeting?"), I decided I might as well do some stargazing, and was amply rewarded with some stunning sights that helped put my earthly concerns in perspective. First was Jupiter, low in the southwest, but surprisingly stable at 49x.
Jupiter (Planet, est. to be in Capricornus)
Observer: Dave Mitsky (e-mail: djm28@psu.edu)
Instrument: 51-cm equatorial reflector Location: Harrisburg, Pa, U.S.A.
Light pollution: light Transparency: fair Seeing: excellent
Time: Sun Jul 13 08:10:00 1997 UT Obs. no.: 213
The high clouds that prevented any serious observing eventually cleared early Sunday morning. After doing some casual deep-sky observing and locating Uranus and Neptune we turned our gaze to Saturn and Jupiter. The seeing was fantastic and I saw more detail than ever before. At 317x two small red spots straddled the central meridian of the NEB. A shadow transit was underway and the image of the shadow was so well defined that it appeared that someone had shot a whole through the planet. We pushed the magnification up to 500x and the image was still acceptable!
Jupiter (Planet)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: excellent
Time: Sat Jul 12 08:20:00 1997 UT Obs. no.: 212
Jupiter was amazing tonight. I've never seen it this well. The seeing was very good; the planet was rock steady at 244x, and I'm sure I could have gone higher if I'd had a suitable eyepiece. Ganymede was a short distance off the eastern limb, with its shadow a prominent black dot just south of the NEB, right on the CM. The NEB was distinctly darker and more colorful, and had more structural detail, than the SEB. Numerous other belts and zones, and lots of other detail, was visible.
Jupiter (Planet, est. mag -2.7, est. to be in Capricornus, Est. RaDec 2134-1521)
Observer: Lew Gramer 77 Magoun Ave. Medford, MA 02155 (e-mail: dedalus@latrade.com, web: http://www.tiac.net/users/lewkaren)
Instrument: 20-inch Dobsonian reflector Location: Savoy, MA, USA
Light pollution: none Transparency: excellent Seeing: good
Time: Sun Jul 6 08:06:00 1997 UT Obs. no.: 216
Central Meridian assumed to be 229o (System I).Yellow (#K2) filter used for all observations, except color estimates, which were clear-eyepiece.At 630x: NEB ochre-reddish, twice as wide as SEB - which appears SINGLE and reddish-brown. EB visible across entire disk, and is darkest near W limb (longitude 150o in System I). A disturbance is apparent in NEB, about 1/3 of way from meridian to W limb (200o). NPR at this high power is hazy, and shows no detail! SPR however is very distinct and brownish, with a hint of orange mottling.At 420x: STB separates itself visually from SPR intermittently, especially at the meridian (230o). NTB and NNTB are now distinct from the NPR haze. NTB clear, about 1/3 of the width noted for NEB. NNTB only intermittent, and about 1/2 width of NTB (or 1/6 width of NEB). Dark BROWN spot just S of STB, 1/3 of way from meridian to E limb (260o). Dark and light orange mottling apparent on W limb (140 to 160o), BOTH N of NNTB and between NNTB and NTB. Disturbance also apparent from STB Nward to the equator, 1/4 to 1/3 of way from meridian to W limb (210o to 200o). Nearby Io to E looked BRIGHT yellow, even without the K5 filter!
Jupiter (Planet)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: fair Seeing: good
Time: Sat Jul 5 08:20:00 1997 UT Obs. no.: 203
Jupiter was well up in the east by this time (0120 PDT), so I gave it a look before coming inside. At 49x I immediately noticed a small dark speck near the equator, about halfway from the CM to the western limb. Only three moons were visible, so I assumed I was seeing the shadow of a transiting moon. Checking the chart on p. 95 of the July Sky & Telescope, I can see that I was looking at (from west to east), Callisto, Io, and Europa, with Ganymede transiting. I took the magnification up to 244x, and with the air fairly steady and the telescope at equilibrium the view was fantastic! I could have spent an hour or more drawing the vast amounts of detail visible, but I was getting tired, and wanted to check the Web for the latest Mars Pathfinder images, so I called it a night.
Jupiter (Planet, est. to be in Capricornus)
Observer: Dave Mitsky (e-mail: djm28@psu.edu)
Instrument: 17-inch other Location: Harrisburg, Pa, U.S.A.
Light pollution: moderate Transparency: fair Seeing: fair
Time: Mon Jun 30 05:35:00 1997 UT Obs. no.: 173
I witnessed a mutual event of the Jovian satellites (see page 78 of the June Sky &Telescope), namely the eclipse of Europa by Callisto early Monday morning. Some 45 minutes or so earlier I noticed the shadow transit of Callisto that was well under way when I observed Jupiter at 249x. Eventually, Callisto's shadow took a bite out of Jupiter's western limb and headed into space towards Europa, the first of 3 moons on the western side of the planet. At 05:35 UT Europa began to dim to 55% of its usual magnitude (a decrease of over 0.7 magnitude). The eclipse was over by 05:44 UT. Ten minutes later Europa disappeared completely when it entered Jupiter's shadow! What a fascinating sequence of events to behold.
Jupiter (Planet)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: light Transparency: good Seeing: fair
Time: Sun Jun 29 10:00:00 1997 UT Obs. no.: 170
Jupiter was getting up fairly high in the east by the time I finished my Hercules session, so I swung over and gave it a quick look. After a long time away from it, during which my planetary observing was confined mostly to Mars, it's stunning how big, bright, and detailed Jupiter is. Numerous bands and zones were visible, as was some nice detail in the equatorial belts. Seeing was not great, with the planet fairly low in a not-so-good sky, and my house directly under the light path to boot. Still, it was an awesome sight. If any of my neighbors had been awake I would have been tempted to drag them over to take a look. There were two moons on each side of the planet in a nice, symmetrical arrangement.
Jupiter (Planet, est. mag -2.5, est. to be in Capricornus)
Observer: Dave Mitsky (e-mail: djm28@psu.edu)
Instrument: 17-inch other Location: Harrisburg, Pa, U.S.A.
Light pollution: moderate Transparency: good Seeing: good
Time: Sun Jun 15 09:00:00 1997 UT Obs. no.: 151
I observed the Great Red Spot, or should I say the Great Pink Spot, on the central meridian of Jupiter at approximately 09:00 UT. The seeing was better than average and a fair amount of detail was present in the cloud bands. Two of the Jovian satellites presented an interesting sight when they superimposed each other about 18 minutes earlier. Observations were conducted at 381 and 405x.
Jupiter (Planet, est. to be in Capricornus)
Observer: John Callender (e-mail: jbc@west.net, web: http://www.west.net/~jbc/)
Instrument: 8-inch Dobsonian reflector Location: Carpinteria, CA, USA
Light pollution: severe Transparency: good Seeing: poor
Time: Wed Mar 5 13:50:00 1997 UT Obs. no.: 95
After observing comet Hale-Bopp, and doing a quick sight-seeing tour of the waning crescent moon low in the brightening E sky, I noticed a bright object under the moon, about 20 degrees up, and said, hey, Jupiter! Observing it in the 8-inch, the seeing was predictably poor, but I was able to see the two dark equatorial belts, as well as the Galilean moons; Io and Callisto close together W of the planet, Ganymede just off the W limb, and Europa to the E.
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