Jupiter was very close to Saturn on December 21, 2020.
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I tried to re-edit the Jupiter photo that I posted on my blog last time with the aim of further improving the image quality, so this time I will cover that.
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Jupiter and Saturn began to appear early in the morning.
I'm usually a night owl manager, and I don't think I'll see you for a while, but I wonder if I'll do my best to get up early and see the giant planet for the first time in a while.
Jupiter posted on the previous blog, taken on August 6, 2020
The photo above is a composite of only 3 sheets, the color paste is not so good, and the gradation jump is quite severe.
For Jupiter this time, I changed the eyepiece to PL10mm, reduced the magnification slightly, increased the number of composites to 17, and tried to synthesize.
Jupiter on August 7, 2020
The photo above is a composite of more sheets.
This time, the satellite was also taken, so I put it out as an upright image on the top, bottom, left, and right.
If you make it an upright image, you may feel something strange because it is an unfamiliar figure, but this is what you actually saw.
The star in the upper left is Ganymede, the third satellite of the Galileo moon, and 20 minutes later, it overlapped in front of Jupiter.
As usual, it is a very convenient software because you can check it with Stella Navigator 95 and simulate the movement of the Galileo satellite.
Anyway, there is a sense of security that you can do everything offline. The caretaker is an old person.
The diameter of the satellite Ganymede is 5262 Km, which is about two times larger than the diameter of the moon of 3474 Km. It is the largest satellite in the solar system and is larger than Mercury.
The average revolution radius is 1.07 million km, which is three times larger than the Earth's moon's 380,000 km, but the orbital speed is very fast due to the influence of Jupiter's huge gravity, and the revolution cycle is only 7 days. Very short, 3 hours.
The figure of Ganymede, not just a dot in the above picture, shows the size of the satellite.
Since the brightness of the satellite part is low, it is processed separately from the main body of Jupiter.
The photo below is further enlarged
Jupiter expanded further
It was magnified too much and became blurry, but I could understand the feeling of Jupiter as it was.
By significantly increasing the number of composites this time, the color tone of Jupiter is richly expressed.
The magnification is 200% pixels, and the pixels are shifted one pixel at a time to improve the image quality.
PL10mm this time, compared to PL6mm used before
Perhaps the lower the magnification, the brighter the color and the easier it is to get the color.
Saturn did a similar process.
Saturn on August 7, 2020
Saturn was also composited in the same way as Jupiter.
The number of composites is 15.
The top, bottom, left, right, and Jupiter are also upright.
The upright image gives you an intuitive sense of Saturn's seasons.
Since the northern hemisphere is facing the sun, the northern hemisphere is now summer.
The magnification is the same as Jupiter above
The original image was a video taken with GH4 for 90 seconds, processed with image processing software, Registax, and the still image produced by changing the processing method little by little was combined in Photoshop.
The detailed shooting method is introduced in the previous blog.
Planet photography with Goyon (500mm f4 telephoto lens)
Shoot the planet with Sannippa! Part 3, Mars very close, details of shooting method
The details of the ring and the striped pattern on the body of Jupiter came out better with the newly synthesized one, but the pattern that should not be on the body of Saturn was generated, and the particles became coarse.
Below is a previously synthesized Saturn for comparison.
Last processed image
The particles are finished more smoothly in the previous treatment.
However, the appearance of the shade of the ring came out better with the new processing.
Since the original video images are the same, it may be better to combine some different ones as well.
For the time being, I posted the best processed image this time.
I gave up here this time, but it seems that more details can be expressed if the processing method is still devised.
Various trial and error, time-consuming and laborious work.
Also, I will do it when I feel like it.
It can be confirmed that it is a lens with sufficient performance as an old Nikon telephoto lens, 500mmf4, and a telescope with an aperture of 125mm.
I would like to continue to use this lens to bring out its performance even more.
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Until the end Thank you for reading.
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