ALPO-Japan: Jupiter Section (November 20, 1999)

1999年11月20日の木星

池村俊彦、薄出敏彦、奥田耕司、中西英和、新川勝仁、松田昭市
T.Ikemura, T.Usude, K.Okuda, H.Nakanishi, M.Niikawa, S.Matsuda

November 20, 1999(UT)

Summary
Masahito Niikawa (280mm SC, Digital still camera Minolta DimageEx1500)
1999/11/20 09h20m15s(UT) I=309.6 II=247.3 III=117.7 4 frames composite
1999/11/20 09h31m36s(UT) I=316.5 II=254.1 III=124.6 5 frames composite
1999/11/20 12h39m00s(UT) I= 70.8 II= 7.4 III=237.9 4 frames composite
1999/11/20 12h42m00s(UT) I= 72.6 II= 9.2 III=239.7 4 frames composite


Telescope : C11 (SC) D=280mm fl=2800mm
Camera :Minolta DimageEx1500 Digital Camera taking lens removed
Effective F No.: 25 (XP24mm Eyepiece Projection)
Filter: IR cut & Low-pass built-in the camera
Obs.site : Mozuhonmachi Sakai-City Osaka Japan
Exposure : 1/8 sec, Analog gain:6dB
Seeing:2/10 Transp.:3/6
Image Processing
The Maximum Entropy Method deconvolution after composite of the original taking images. And enhanced with the unsharp masking method.
Remarks
Bad condition, wind was strong.
Hidekazu Nakanishi (200mm Maksutov-Newton, Starlight Xpress MX5-C Cooled CCD Camara)

No.77 1999/11/20 12:02:19(UT) I= 48.4 II=345.2 III=215.7
Enhanced by H.Nakanishi

ALTER8N 200mm Maksutov-Newton(F6), Or12.5mm(f/50)
Starlight Xpress MX5-C, 0.5sec

Comment
  • SEB南縁の変化がすこし大きいように見えます。
  • 相変わらずNEBからのフェストーンは活発にたち上がっています。
Toshihiko Ikemura (310mm Newton, Digital still camera NEC Picona)

No.171 1999/11/20 12:12:10(UT)
I= 54.4 II=351.2 III=221.6
De=+3.3 Dia=48.15"
310mm Newton(F5)
TeleVue barlow 5x (f/34)
1 deg. prism
NEC PICONA 1/7sec
5 frames composite


No.172 1999/11/20 14:33:22(UT)
I=140.5 II= 76.5 III=307.0
De=+3.3 Dia=48.15"
310mm Newton(F5)
TeleVue barlow 5x (f/34)
1 deg. prism
NEC PICONA 1/7sec
6 frames composite

Toshihiko Usude (250mm Newton, Cooled CCD Camera SBIG ST-7)
No. 9 1999/11/20 13h36m(UT)
I=104.6 II= 40.9

250mm Newton(F7) Or12.5mm(f/30)
SBIG ST-7, LRGB
L=R=0.11sec, G=(R+B), B=0.5sec
Seeing:5/10 Transp:3/5

  • The L picture is 4 images of composites of the R image.
  • Image processing:unsharp masking method by Photoshop.
  • It isn't possible to encounter the front of GRS.
Syoichi Matusda (300mm Schmidt-Cassegrain, Cooled CCD Camera BITRAN BJ-32C)
No. 14 1999/11/20 13:49:19(UT)
I=113.6 II= 49.9 III=280.4

300mm Schmidt-Cassegrain
XP24mm(f/30)
BITRAN BJ-32C 1/4sec
1 frame
Seeing:6/10 Transp.:3/5


Koji Okuda (250mm Newton, BITRAN BT-01 Cooled CCD Camera)

1999/11/20 14h19m(UT) I=130.4 II= 66.5 III=298.1
1999/11/20 14h57m(UT) I=153.5 II= 89.5 III=321.1

250mm Newton, BITRAN BT-01, LRGB
Seeing:4-5/10 Transp.: 7/10

コメント

  • シーイングがよくなく細部はハッキリしない
  • BE WS FAは相変わらず健在
  • GRSの前方から下方にかけて白斑状の明部がありそうだ

カラー合成に使用したフレーム
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