Link to access LABprofile: https://www.astro.uni-bonn.de/hisurvey/euhou/LABprofile What LABprofile is: This interface allows you to extract HI profiles from the Leiden/Argentine/Bonn (LAB) survey. The profiles are generated on your request from the…
The error “No module named mysql” means Python cannot find the MySQL connector library in your current environment. On Windows, this usually happens because the MySQL package isn’t installed in…
I would like to be able to tune my antenna for my VLF to match it. Currently I am using a 10 uF capacitor, which seems to be doing a…
The current best estimate for the total mass of the Milky Way is: 🌌 ~1.0–1.3 trillion solar masses That is: (1–1.3) × 10¹² times the mass of the Sun 🔎…
Astronomers use parsecs because they fall naturally out of how stellar distances are measured — by parallax. 1) It comes directly from geometry A parsec is defined using stellar parallax:…
In the UK, true in-band transmissions at 1418–1422 MHz are essentially nonexistent because this sits inside the internationally protected 1400–1427 MHz passive band allocated to radio astronomy and Earth-exploration (passive).…
The is designed specifically for hydrogen-line (21 cm, ~1420 MHz) reception by combining a SAW band-pass filter with low-noise amplifier stages. According to the manufacturer’s published specs: 📶 Bandwidth /…
In the United Kingdom, the L-band around the 1420 MHz hydrogen line is formally recognised and protected for passive scientific use, meaning emissions by other services are prohibited or very…
I searched available parts online — but there really aren’t any continuous mechanical variable capacitors around ~10 µF on Amazon, eBay, or typical component suppliers. Mechanical variable capacitors (rotary types)…
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