Saturn 2018-09-20

The same file, two different processings. Raw data obtained with N 150/750, barlow, ADC, tubes, ASI 224 MC, 2% of 40k frames.

(tovább…)

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Some Saturn Pictures

Some Saturn images with the N 150/750 + ASI 224 MC gear.

2018.09.12. 20 34 07

2018.09.12. 20 34 07

2018.09.12. 20 34 07

2018.09.12. 20 34 07

2018.09.12. 20 34 07

2018.09.12. 20 34 07

2018.09.14. 20 42 08

2018.09.14. 20 42 08

2018.09.14. 20 22 49

2018.09.14. 20 22 49

2018.09.14. 20 22 49

2018.09.14. 20 22 49

2018.09.14. 20 22 49

2018.09.14. 20 22 49

2018.09.16. 17 13 37Z

2018.09.16. 17 13 37Z

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Looking for Neptune – 2018-09-12

Neptune and Triton, I think

Neptune is not that hard to find, in theory. Add light blinding pollution, a not so accurate polar alignment and some passing clouds, and it becomes a PITA.

The other thing is, that IF the object I photographed is indeed Neptune AND Triton, the moon is off  compared to Stellarium. I intentionally photographed a reference star too, so I could put it on a map. However, the map itself is the DSS and some stars may have just moved away.

The gear: N 150/750, 2x Barlow and empty extension tubes, the ASI 224 MC camera, on the HEQ5 mount, in the city. 2018-09-11 22:26Z, ie 2018-09-12 1:26 local time.

(tovább…)

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Mars 2018-09-10

N 150/750, 2x Barlow, TS Optics ADC, 20cm extension tubes, ASI 224MC, PIPP, Registax, 1500 out of 20k frames.

Mars 2018-09-10

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20 Years

It’s been twenty years since one of my first entries in my log, and exactly twenty since the first (more like one of the first) Jupiter observation. Living at the very margin of my home town, with a full horizon east-south-west, and very poor public illumination characteristic of the post-communist era, I had a decent view of the night sky. I remember how I “discovered”  Jupiter as an odd star that’s not supposed to be there in the constellation, during the dawn. As time passed the star has risen, so I was able to observe its… satellites, so it was Jupiter. And this is the entry I made twenty years ago. However, checking it out now in Stellarium, I see that I missed Saturn. Jupiter’s satellites’ positions are ambiguous, it could be 21:45 or anytime till midnidght since the bino I used (12×25) most likely didn’t show Io that’s been close to Jupiter during those hours. The Moon came later, towards midnight, hence the datetime of the entry.

1998-09-10, clear sky, at about midnight: The first luminous one is Jupiter, and I’ve seen three of its satellites, and also some craters on the Moon.

1998.09.10. Csillagnapló-részlet

1998.09.10. Csillagnapló-részlet

 

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Saturn, Mars 2018-09-08

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Saturn reprocessed

Saturn 2018-09-02

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Saturn’s Moons, and some star – 2018-09-02

While recording the planet, I also exposed a few frames for the moons. Then I used Stellarium to align the properly exposed planet to the rather noisy background. The outcome had a surprise too, a 10.15m star I failed so far to identify. Below I show the steps of the process the picture went through from the stack, via composing, to the final image. Mimas is more like a wishful thinking — there are some lighter pixels there though –, but Enceladus is clearly there. The moons on the final picture are from the pixels of the original recording, the Stellarium layer was nothing but a guiding tool.

(tovább…)

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The Rotating Mars – 2018-09-02

Mars, rotating

Using the N 150/750 tube with the ASI 224MC, on the HEQ5, I imaged how the red planet rotates around its axis. While this is trivial, this is my first attempt, after being more than successful with Jupiter. Meanwhile, I got news that the ADC is coming after all, so I may image Saturn and Mars using an ADC, hoping for better results. Also, in a few days I’ll have been an amateur astronomer for twenty years1998.09.10. Csillagnapló-részlet.

(tovább…)

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Saturn – 2018-09-02

Saturn, 2018-09-02

Tonight I put up the N 150/750 scope, with the almost-for-free extension tube to get meaningful sizes for the projection of the planets. Because the ADC I order from the internet still has not arrived, the dispersion is severe. However, there is a trick: to get the most out of the Cassini division, I used only the red channel as luminance, so lots of editing went into each Saturn-picture. The seeing was surprisingly good at first glance, but the stack quality revealed it was more of wishful thinking. Camera: ASI 224 MC, mount: HEQ5. The grey 1.25″ extension tube is from the nearest hardware store.

(tovább…)

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Jól kalibrált monitoron mindegyik számnál elkülönülő árnyalat látszik. Ha mégsem látszanak, akkor a megjelenített képek színhiányosan rajzolódnak ki. A monitort valószínűleg kalibrálni kell.

You should see distinct shades for each number. If those shades are not clearly visible, the displayed pictures will lack accuracy. Your display most likely needs to be calibrated (brightness, gamma, contrast etc.).