Hi all,
Have survived a close call with Hurricane Georges -- the price we have
to pay for good seeing! I have attached more Jupiter images. Lots of NEB
activity. One can see the pale outline of the GRS in its hollow.
Best,
Don
UNIVERSAL DATES/TIMES FOR JUPITER IMAGES 29 SEPT., 1998
D.C. Parker, Coral Gables, FL. Lynxx PC camera 16-in (41cm) Meade SCT
Eyepiece Projection @ f/22.4
Integration Times:
Blue (Schott BG12 + IR Rejection) 2.60s
Green (VG9 + IR Rejection) 1.35s
Red (RG610 + IR Rejection) 1.20s
Images flat and dark corrected.
Seeing excellent (8-9), Transparency 4.5-5.0m -- Occasional clouds late;
Wind SE-S 2-5 kts, increasing late. No dew.
UNIVERSAL DATES/TIMES FOR JUPITER IMAGES 30 SEPT., 1998
D.C. Parker, Coral Gables, FL. Lynxx PC camera 16-in (41cm) Meade SCT
Eyepiece Projection @ f/22.4
Integration Times:
Blue (Schott BG12 + IR Rejection) 2.93s
Green (VG9 + IR Rejection) 1.60s
Red (RG610 + IR Rejection) 1.43s
Images flat and dark corrected.
Seeing good (6-7), Transparency fair ( 4.0m) High haze, occasional clouds;
Wind SE-S 3-8kts, increasing late. No dew.
| date(U.T.) | CM2 | observer | |
| 1998Sept16 | Wc | 240.8 degrees | Zac Pujic |
| 1998Sept20 | Wc | 238 degrees | John W. McAnally |
| date(U.T.) | CM2 | observer | |
| 1998Sept16 | Dc | 162.9 degrees | Zac Pujic |
| 1998Sept19 | Dc | 160 degrees | Walter Haas |
| 1998Sept20 | Dc | 156.88 degrees | John D. Sabia |
| 1998Sept23 | Dc | 153 degrees | John W. McAnally |
| 1998Sept25 | Dc | 155 degrees | Harry Pulley |
| 1998Oct 04 | Dc | 149 degrees | John W. McAnally |
| date(U.T.) | CM2 | observer | |
| 1998Sept06 | Dc | 199 degrees | Eric Jamison |
| 1998Sept16 | Dc | 192.5 degrees | Zac Pujic |
| date(U.T.) | CM2 | observer | |
| 1998Sept18 | GRSc | 65 degrees | Walter Haas |
| 1998Sept19 | GRSc | 66 degrees | Harry Pulley |
| 1998Sept27 | GRSc | 67 degrees | Samuel R. Whitby |
| 1998Oct 04 | GRSc | 63 degrees | John W. McAnally |
Regards,
John
//////////////////////////////////////////
John W. McAnally
The ALPO Jupiter Section
Acting Assistant Coordinator
Transit Timings
Reta,
I hope that you, Amy and the rest of the IJW team are doing well. The Galileo orbiter continues to obtain outstanding imagery and I am glad to know that we are part of its success. I was able to make an observation last night and fortunately the Great Red Spot (GRS) was visible and I was able to time its transit (preceding at 053.0 SII (173.2 SIII), center 063.9 SII (184.0 SIII), and following 074.8 SII (194.9 SIII)). The SEB Disturbance (3/10) appears to have circumscribed the globe and connects to the preceding edge of the Red (or White, WSH) Spot Hollow (RSH) and its preceding turbulent edge is readily apparent. The GRS itself appears to be more obscured by a haze (7/10) which merges with the RSH to the north. Two dusky (4/10) prominent festoons (or Olivarez Blue Features, OBF's) are noted along the southern edge of the NEB (itself dark (3/10)). A very dark (2/10) barge is noted preceding the CM along the northern border of the NEB. The South Temperate Belt (STB) appeared dark to dusky (3-4/10). The South and North Polar regions (SPR and NPR) appeared dull (5/10) with a dark to dusky (3-4/10) material noted within the NPR. A dark (3/10) North Temperate Belt (NTB) and a dusky North, North Temperate Belt (NNTB) were noted as well.
I hope that the observation proves useful in your analysis and I hope to make more when I have more time. The best of luck to you all and please stay in touch.
Carlos
The IJW Atmospheres Section is scheduled to meet during the DPS on Wednesday, October 14th from 11:30 am to 1:00 pm in Meeting Room P+Q.
Box lunches have NOT been arranged so please make a note.
Reta
