木星 ALPO-Japan Latest
Jupiter Image 2013/01/25(UT)
熊森照明,永長英夫,吉田知之
Donald C Parker,Lorenzo Comolli,Brian Colville,Efrain Morales Rivera
T.Kumamori,Don,H.Einaga,T.Yoshida,L.Comolli,B.Colville,E.Morales
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Teruaki Kumamori (280mm SC) |
シーイングで木星は激しく揺れるし、風で望遠鏡は揺れ、
木星が時々フレームからはみ出す厳しい状態でした。
≪大阪府堺市 熊森照明≫[Teruaki Kumamori:Ohsaka Japan]
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Donald C Parker (356mm SC) |
I have attached an RGB Jupiter image from 25 January showing Io
leaving transit and Ganymede and Callisto. Post "cold" front seeing
was fair to poor
[ Donald C Parker Coral Gables,Florida U.S.A]
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Hideo Einaga (300mm Newton) |
[Hideo Einaga Kasai-City Hyogo-Prefecture Japan]
≪兵庫県 加西 永長英夫≫
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Tomoyuki Yoshida(300mm Dall-kirkham) |
[吉田知之 Tomoyuki Yoshida:Utsunomiya,Tochigi,Japan]
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Lorenzo Comolli (310mm Newton) |
[Lorenzo Comolli,Italy +45d 42'44"N 08d 54'26"E]
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Brian Colville(300mm Cassegrain) |
The weather here in S. Ontario has been terrible from an astronomical perspective for many months,
and images of Jupiter have been scarce.
Thursday evening (Jan 25th UT) was clear and cold (-22C) but I decided to try imaging.
The seeing was very poor earlier in the day when I tried solar,
but conditions were quite good when I got the observatory open and set up to work on Jupiter.
I have attached a set of images,essentially one RGB set and a few IR and a single methane image.
All images were taken though a C14 @ f11,with Astrodon R,G,B and Baader IR680nm/890nm,10nm FWHM methane filters.
The camera is a Point Gray Flea2 mono wit the ICX445 chip.
All labeled times are the start of the image capture with image details below:
The top row is the RGB sequence and colour composite. My G image sequence was corrupt,so I synthesised a Green frame by averaging the R and B images and labeled is as (Green).
The second row has the 2 IR pass images as well as the methane and a false colour image wit the IR as luminance.
The IR started 01:56UT is from a short 500 frame sequence,
and the next one at 02:21UT is a de-rotated image from a 5 min long image stream (5,030 frames).
The methane image was captured with a stream of 50 x 5 sec frames in 2x2 binned mode,then re-sized after stacking.
In all images the GRS is nearing the limb on the left side.
The shadow of Io is trailing the GRS and Ganymede is approaching on the right side.
Callisto was also in the field,but has been cropped out of the assembled images.
I was quite happy to get the details that I did,and this is one of the few times I was able to resolve the disks of Ganymede and Callisto.
I’m not 100% happy wit he colour balanmce,but I have spent enough time playing with it for now
[ Brian Colville : Cambray Canada]
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Efrain Morales Rivera(300mm SC)
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[Efrain Morales Rivera Aguadilla:Puerto Rico]
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