Saturn Section: October 29, 1999

1999年10月29日の土星

池村俊彦、新川勝仁
T.Ikemura, M.Niikawa

Masahito Niikawa (280mm Schmidt-Cassegrain, Digital Still Camera Minolta Dimage EX1500)
Condition:
1999/10/29(UT)
 14h32m48s(UT) I=150.1 III=304.2, 10 frames compsoite

Seeing = 3/10 Trans.= 2/6
All images are taken with ;
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 : 1/3 sec or 1/4 sec
Analog gain: 8dB
Image Processing;
  • Enhanced with the unsharp masking method
Toshihiko Ikemura (310mm Newton, Digital still camera NEC Picona)
Condition:
1999/10/29(UT)
16:56:24(UT) I=234.3 III= 25.0,  7 frames composite
17:01:42(UT) I=237.4 III= 28.0,  7 frames composite
17:29:48(UT) I=253.9 III= 43.9,  5 frames composite


De=-22.1  E.Dia=20.14"
Ring Long  dia 45.91"  Ring short dia 17.26"  
310mm Newtonian(F5)
TeleVue barlow 5x
Digital camera NEC PICONA 1/7sec
Comment:
A color seems became thin as for the red belt of surroundings of the South Pole of Saturn, rapidly. A peak of vividness of this red belt to be August from July.
Comment(Japanese):
土星の南極の周りの赤い帯は、急速に色が薄くなったようです。この赤い帯の鮮やかさのピークは、7月から8月であったと思われます。
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