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For the record, past me was wrong. That’s not the ring nebula. There aren’t two bright stars aligned like that near the ring nebula. But that’s the prettiest Jupiter I’ve ever taken!
(Why is there a double saturn? I know why now!)
| 2 min
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Telescope mount v3 is pretty good, but it still wobbles slightly. If I touch or move the telescope, it wobbles a bit before settling down in 2-3 seconds. Before it settles down, Saturn turns into two images of Saturn next to each other.
I can use that picture and do the math to see how much it's wobbling:https://www.timeanddate.com/astronomy/planets/distance says Saturn is 18.96" right now. That's a second of arc, 1/60 of a minute of arc, which is 1/60 of a degree.
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I drove a few hours to visit friends and a bortle 4 sky. wow there were so many stars. You could barely make out an arc slightly lighter in the sky than the rest of it! The Milky Way! Through a telescope, there were much more stars than before and they just kept going and going if you moved the telescope. Saw the plediades too wow many bright stars near each other
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Jupiter, four Galilean moons, and a blue star!
It could be improved if I was better collimated, but I’m happy I got all 4 of them with the high power eyepiece!
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Today I learned that astronomers measure star brightnesses in the modern AB system, using (logarithmic) units of Janskys, where one Jansky is 10−26 W⋅m−2⋅Hz−1. Why is there the extremely cursed Hz−1? Hz is already s−1. Why is it like that. Astronomers, why is it like that. s−1−1 is just seconds
If you cancel all the units, you get… 1 Jy = 10−26 kg m2 s−3m−2 s−1−1 = 10-26 kg s−2. …so we measure starlight in the same units as surface tension.
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I heard there was a meteor shower tomorrow! So naturally I went out today to see it. First I treated it like any other target and tried to find a good gap in the trees to see Perseus, but then I read online that meteors appear in the full sky, not just at the radiant.
So I lay down on the sidewalk, and 30 minutes later… zoop!
The meteor was super underwhelming compared to the time I spent waiting.
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Everything was very blurry today and I kept wondering why focusing didn’t seem to fix it before realizing it was cloudy.
My custom Pico Bluetooth picture taking button worked great though!
| 6 min
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It all started with an idea for better telescope images.
I take photos using my phone. My telescope shakes when I press the capture button. I have a raspberry pi pico W, which recently added bluetooth. I wonder if I can connect the pico to my phone as a bluetooth device so I could press a button on the pico and remotely take a snapshot.
Bluetooth is a nightmare the C++ standard is a mess of inscrutable acronyms.
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I take photos using my phone. My telescope shakes when I press the capture button. I have a raspberry pi pico W, which recently added bluetooth. I wonder if I can connect the pico to my phone as a bluetooth device so I could press a button on the pico and remotely take a snapshot