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Monthly archives: február, 2020

Venus – 2020-02-25

Venus

I imaged using the HEQ5, N250/1200, ASI 178MM (cooled), home observatory, mountpusher gear, aided by a red, Calcium K-line and a Venus U filter, all three from Baader. I used the red as orange and the U as cyan, to create the false color RGB picture, applying the K-line as a semi-opaque luminance layer on top.

With each passing day, the planet moves more and more out of the reach of my balcony observatory, these days the best horizon, the aperture being already partially covered by the corner of a wall, is at around 17:10 local time.

(tovább…)

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Venus in Calcium K, 2020-02-16

Venus in Calcium K

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Venus 2020-02-16

Venus, false color

So I imaged Venus and deployed the technique describen earlier: the Calcium K-line got cyan, the visible light’s RGB got orange, and the false color outcome is featured here. Because I noticed that the ASI 178 tends to run at ambient plus 10-15 degrees Celsius, I made it a cooler, quite similar to the one on the ASI 224 MC, and reached ambient t – 5 degrees and maybe way less noise. Though imaging Venus like this, from a hole in a wall, on the daytime sky with two instruments may sound easy, or I may make it sound easy, it wasn’t. It was almost as hard as doing it for the first time.

HEQ5, N250/1200, TSO ADC, ASI 224MC (uv/ir filter, cooled), and ASI 178MM (Calcium K filter, cooled), home observatory, mountpusher

(tovább…)

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The Cloudy Venus 2020-02-09

Venus, false color

Now with the Calcium K line filter at hand, and some decent sky, I imaged Venus. The first problem was finding it, from my hole-in-the-wall balcony and not an exact polar alignment. To be able to pull such a feat, I had to build something: from some arduino modules, I put together an inclinometer to get the tube’s altitude, and then look for the planet at the suspected orientation for the given azimuth.

I used my usual gear, with the mentioned enhancement, with a mono camera and the Baader K-line Calcium filter, HEQ5, N250/1200, TSO ADC, ASI 178MM, Calcium K-line, and ASI224MC with the UV/IR,  home observatory, mountpusher

(tovább…)

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The clouds of Venus 2020-02-01

Venus and its clouds

The literature tells us that it’s UV filters through which the clouds of Venus are visible. A Calcium K line filter is en route to me, but till then I still fired up my balcony observatory: it’s weekend, I am at home, and Venus is visible, so let’s take a shot. Actually, I took five shots with different settings, and then tried my best to squeeze out some clouds, cause why not. Initially, I thought the results were artifacts, but they were consistent on all five shots, even though I adjusted the ADC in the meanwhile. I was hoping then that someone else was imaging Venus at around the same time as me, so if the features proved to be consistent, then it’s no artifact. And so it happened, xcsabesz from asztrofoto.hu imaged Venus, through a filter, and the two pictures overlap nicely.

(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.).