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jupiter J1999 10c 768x629 - The image of Jupiter from 1999
  • 2021-07-08

The image of Jupiter from 1999

The image of Jupiter from 1999 The basic imaging method is the same as it is now, but the imaging device is 1-2 generations ago. The cooled CCD camera (Teleris2, KAF-400e), which was expensive at that time, and the custom-made methane band filter (Nippon Vacuum Optics, half-value width 6.5 nm) 32 cm newtonian (F / 32 3×3 binning imaging in 20 seconds, which is now 100 times more exposed. It was quite difficult. It was a poor image, but I was happy that the CH4 image was possible even for amateurs. On the Jupiter feature, the clearly large GRS and permanent white spot BE (front) and FA (rear) were captured by CH4, and then In the latter half of March 2000, two permanent white spots merged to form the current Oval BA.

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telescope 拡大撮影装置 768x555 - From successive magnifying planetary photography devices
  • 2021-07-05

From successive magnifying planetary photography devices

From successive magnifying planetary photography devices 1 was in the 1980s, and it was difficult to use a commercially available device, so I asked Mr. Kawakami from Gunma to make it. Made of brass, connect the close-up ring and adjust the synthetic FL (F / 100-250). I miss the bright finder of the Nikon F2 at that time. 2 is a magnifying image device made by Borg, but I didn’t use it much. 3 is the device of the 45 cm reflector CMOS camera (ADC may not be used) that is currently used, and contains XP 24 mm.

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jupiter J2021 06027 1 akutsu 768x672 - 木星 2021年6月27日
  • 2021-06-29

木星 2021年6月27日

Jupiter 2021-06-27 (UT) It started to clear up in the middle of the night. I saw Jupiter during the rainy season I could see Jupiter’s GRS away from the front to the extent . Seeing was little better

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telescope 203946288 2379913092149845 5827671314420492704 n - Telescope transformation
  • 2021-06-29

Telescope transformation

Change of self-made 45cm newtonian oblique mirror adjustment screw. The previous work oblique mirror correction screw had a bending bend in the knob, which was not easy to use. So, this time, I replaced it with a 6mm diameter wheel set with a ball pushed into the tip. A hexagon wrench was attached to the bolt head with an epoxy bond to the overall length and knob, and a vinyl tube finish was used to make the wrench easier to operate. Since the four are made the same height, they interfere a little, but the angle of turning can be finer than the previous work, and it can be firmly fixed!

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jupiter J2021 06024 akutsu 1 768x672 - Jupiter June 24, 2021
  • 2021-06-26

Jupiter June 24, 2021

Jupiter 2021-06-24 (UT) The conditions were bad due to poor seeing and clouds, but I got the image. The SEBs in front of the GRS are dark. The StrZ belt to the south extends from the GRS. SEBn is bumpy. Seeing is bad, so it looks like this, UV.CH4 is an image that was forcibly exposed due to underexposure.It was a little transparency, but the color was close to the visual

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moon 20210623 1 768x1038 - Moon at dusk
  • 2021-06-26

Moon at dusk

2021-06-23 　Moon at dusk The summer solstice has passed and dusk is still late. I just watched into the beautiful orange moon in the low sky in the south with a 3 cm telescope and enjoyed it with just the right amount of brightness. I was able to take a good picture except when I took it with my smartphone. It’s easy!

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saturn Suturn 20210621　akutsu 768x843 - Saturn June 21, 2021
  • 2021-06-26

Saturn June 21, 2021

Saturn　 2021-06-21 (UT) I also took a image of Saturn during the routine imaging of Jupiter. Saturn, which is 1/4 brighter than Jupiter, has a sufficient amount of light if it has 45cm.telescope. The inclination of the ring disappears year by year, and this year　ring is so beautiful. In the image, the brightness of the main is reversed between UV and CH4. The C- ring is clearly visible on CH4 and IR-1000, but it is also visually transparent and beautiful

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jupiter J2021 06021 1 akutsu 768x672 - Jupiter June 21, 2021
  • 2021-06-26

Jupiter June 21, 2021

Jupiter 2021-06-21 (UT) The weather forecast was cloudy, but We don’t know the rainy season, but it was finer than expected. Jupiter had no contrast, but seeing was good and I could see quite a few details. On Jupiter’s feature there is a chain of small vortices of SEBs. In the CH4 image, the white spots visible in the Arctic region are NN-LRS-1 (methane bright). Compared to the Antarctic region, the Arctic region has more mottled patterns, but it is not visible because there is no visual contrast.

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jupiter J2021 06020 2 akutsu 768x672 - 木星 2021年6月20日
  • 2021-06-22

木星 2021年6月20日

Jupiter 2021-06-20 (UT) Jupiter during the rainy season. It was frustrating because the image was taken while waiting for the clouds to pass, but I was lucky because it was clear. The GRS is on the far right, and the SEBs behind it have a chain feature. IR-1000 is black feature. NEB is light on the north side, and you can clearly see bulges (bar-shaped dark spots) like stains. Seeing is bad and its no details!

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