SARA members have access to this telescope, providing an incredible opportunity to use a professional telescope for personal observations, which will be used for educational purposes. A ZIP file of…
Another project underway is water maser radio observing. This requires a 1m dish (arrived today, below) and an LNB for 22 GHz (ordered from USA) and a HEQ5 Pro mount…
Click below to download video:
In cosmology, a positive Doppler shift in radio waves means an object is moving away from us. This happens because the waves get redshifted — their wavelength stretches, and the…
1. Visual Inspection Check for: 2. Continuity and Resistance Testing Using a multimeter: 3. SWR Measurement Use an SWR meter or antenna analyzer at 1420 MHz: 4. Feedline Loss Test…
For M31, Wikipedia gave the following: M31’s Radial Velocity: The Andromeda Galaxy (M31) is moving toward us with a radial speed of roughly 300 km/s. (Sometimes you’ll see a value around…
https://www.gb.nrao.edu/cgi-bin/radvelcalc.py
The Ka band (pronounced as either “kay-ay band” or “ka band”) is a portion of the microwave part of the electromagnetic spectrum. The designation “Ka-band” is from Kurz-above, which stems…
Click below to download file – ZIP file that needs to be unzipped to get USR file for Spectrum Lab: https://www.astronomy.me.uk/wp-content/uploads/2025/03/LRO-M1Speclab_Settings_FunCube-Dongle-Pro_150325.zip
My first “map” of M31 – results of my first observing programme using the 20m dish at Green Bank Observatory. The spectra show a clear change in Doppler shift with…
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