English Posts

Abstract : in this post we describe the measurements of the fluorescence decay time in some compounds that have particularly long decay times, therefore suitable for being measured with our experimental setup. Introduction With the system described in the post Fluorescence Lifetime Apparatus we carried out a series of measurements …

Abstract : fluorescence is a physical phenomenon as common as it is fascinating. Many substances show this phenomenon and, in our blog, we have dealt with it several times, measuring the spectrum and intensity of the emission. Now we want to try to measure the time trend in order to …

Abstract : SDR devices are truly a “Swiss Army Knife” in the field of RF signal management. In this post we show their application in studying the frequency behavior of RF components. Introduction With a wide-band noise generator and SDR device it is quite easy to set up a system …

Abstract : in this post we want to present some results obtained with our meteoric scattering radio reception system (Meteor RF Scattering Receiving System). We aimed the antenna in the direction of the Graves radar at an angle of about 50 ° and collected the data for a few days. …

Abstract : in this post we want to describe a “radar-astronomy” project. By exploiting the reflection capacity of radio pulses by meteor trails, it is possible to study their characteristics and number with radar techniques. At an amateur level it is practically impossible, even for legal reasons, to have adequate …

Abstract : Using the amateur radio telescope described in previous posts: A simple 11.2 GHz RadioTelescope (HW Part), A simple 11.2 GHz RadioTelescope (SW Part) we tried to make a quantitative detection of the radio emission of the sun at the frequency of 11.2 GHz. the measurements we made and …

Abstract : In this post we continue the description of our diy microwave radio telescope. In the first part: A simple 11.2 GHz RadioTelescope (HW Part) we have described the hardware part of the instrument, including the parabolic reflector antenna, the LNB block and the receiver. Now we take care …

Abstract : In this post we describe the construction of a small amateur radio telescope operating at the frequency of 11.2 GHz. The construction of the radio telescope takes advantage of the satellite TV market which has made it easy and cheap to find parabolic reflector antennas with relative illuminator …

Abstract : in this post we continue the study of the emission of neutral hydrogen clouds with the antenna and receiver at 21 cm. We provide evidence of the possible detection of a high-speed cloud, we present a measurement of the emission from the galaxy made with the transit technique …

Abstract : In this post we want to continue the study of the structure of our galaxy made using the emission at 21 cm of neutral hydrogen and described in the previous post : Milky Way Structure detected with the 21 cm Neutral-Hydrogen Emission. In particular, we want to exploit …

Abstract : In this post we want to describe the study activity of the structure of our Galaxy made using the emission at 21 cm of neutral hydrogen, detected by the instrumentation described in the previous posts : Horn Antenna for the 21 cm Neutral-Hydrogen Line, Low-Noise SDR-Based Receiver for the …

Abstract : After the previous posts on the horn antenna (Horn Antenna for the 21cm Neutral-Hydrogen Line) and on the receiver (Low-Noise SDR-Based Receiver for the 21cm Neutral-Hydrogen Line) in this post we briefly describe the Linux GNURadio application and its use for receiving the 21 cm emission of neutral …

Abstract : after the article on the pyramidal horn antenna : Horn Antenna for the 21cm Neutral-Hydrogen Line, we now pass to describe the design, construction and analysis of the hardware system for receiving the 21cm radio-emission of neutral hydrogen. Design What we intend to create is a receiver centered on …

Abstract : Van de Hulst predicted the existence of the radio emission of neutral hydrogen at 21 cm and in 1951 Ewen and Purcell succeeded in detecting this emission with the horn antenna shown above. In this post we want to describe the design and the construction of a low …

Abstract : In this post we want to exploit the “freshly built” nitrogen laser (DIY Nitrogen TEA Laser) as a source of excitation for a dye laser. The dye laser is super-radiant and therefore can operate, under the right conditions, even without a resonant cavity. By focusing on the cuvette …