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My OBS keyboard – source code

So the whole thing is made in Arduino, one Attiny85 board acting as a USB client, a HID keyboard, and another board, a Nano (ATMega 328P) on the lookout for button presses. The two communicate via serial.

And the source code is published on github here (the USB-handling attiny85) and here (and the buttons-handling nano).

Below is the very first, unoptimized implementation, barely fitting onto the flash.

(tovább…)

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Venus – 2022-01-07

One day before the closest encounter, because of the clouds. Seen through ASI 178MM (cooled), ZWO IRpass 850 1.25″, TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod

(tovább…)

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Venus, 2022-01-02

ASI 178MM (cooled), ZWO IRpass 850, TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod, ersatz-obsi

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On Creating a Lunar Mosaic

2014-10-20, Moon-mozaic, showing the assembly process with the overlaps

One of the, we can perhaps call it this way, standard challenges any amateur astronomer faces is photographing a lunar mosaic. In other words: taking a sequence of large resolution images of different areas of the Moon, to assemble it later, and thus gain a large landscape but with the added extra resolution. Pretty straight forward. And everybody who’s ever attempted such an endeavor is familiar with stuff going south, picture below. (tovább…)

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Sun, in CaK 2021-12-23

ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod

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Venus, first light 2021-12-23

At 13:43 local time, I had the first light with the new ASI 485 MC camera. Although the new driver made it visible in sharpcap 3, it only worked correctly in sharpcap 4.

ASI 485 MC, first light,  UV-IR-cut, GSO 3x APO barlow, TS-Optics 76/342 TS76ED, mountpusher, EQ3-mod, ersatz-obsi

(tovább…)

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Venus, 2021-12-18 through two tubes, three filters

I used the following gear: MC102/1300, 2x barlow, UV/IR cut, ASI 462MC and the TS-Optics 76/342 TS76EDPH, with the filterwheel, and ASI 178MM with a 3x ED barlow, both — one after the other — mounted onto the EQ3-mod with the mountpusher.

Since the phase of Venus doesn’t favor observing its clouds, and the  seeing was really bad, I opted for the IR850-pass, and the solar continuum filter to minimize the atmospheric effects. Five minutes for each.

Venus, ASI 462MC

Venus, ASI 462MC

Venus, solar continuum, ASI 178MM

Venus, solar continuum, ASI 178MM

Venus, IR850, ASI 178MM

Venus, IR850, ASI 178MM

 

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Sun, CaK, 2021-12-17

I only had a few minutes between the clouds, so no heavy post-processing this time, given that I don’t have the usual 10×3 minutes, which significantly reduces the … noise, a pixel size “something” I guess, present  either in the instrument or really on the Sun.

The gear: ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod

Same happenned for 2012-12-15, only a few minutes. We can see the beautiful spotted region rotating into view

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The Sun in Calcium K – 2021-12-18

Finally, the clouds broke over the ersatz-obsi, and the Sun is showing some awesome activity. The image was taken, as usual, through the Calcium filter, which I found yields the best images, hydrogen alpha aside, of the surface of the Sun, running circles around the solar continuum, as long as a full disk image is the goal.

ASI 178MM (cooled), Baader K-Line Filter 1.25″ (double stacked), TS-Optics 76/342 TS76EDPH, mountpusher, EQ3-mod, with the automated filterwheel.

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The Sun in 2015-07-03, CaK, then vs reprocessed

Using a setup I no longer have, an Atik camera, I made a mosaic of the Sun with the N150/750 tube, through the Baader K-Line Filter 1.25″ (double stacked) filter. I processed it back then, and reprocessed it now. It shows the difference.

Calcium K (2015)

Calcium K (2015)

Calcium K 2015, reprocessed in 2021

Calcium K 2015, reprocessed in 2021

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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.).