The International Astronomy Center recently started using the spectroscopy method to observe various celestial bodies from stars, planets and nebulae.
This method is characterized by providing important information that can only be known through, which is to connect the telescope with an astronomical camera, and then install a device called a “spectrometer” whose task is to analyze the light coming from the celestial body to the colors of the spectrum, and through this analysis, dark black lines may appear in the spectrum. They are called “absorption lines”, or bright lines called “emission lines” may appear. These lines are very important as they give information about the elements or compounds present in the body.
This was explained by Engineer Mohamed Shawkat Odeh, Director of the International Astronomy Center, pointing out that the center carried out its first experiment using this technology on Thursday, October 15, 2020 from the Abu Dhabi desert, where the monitoring began to direct the telescope towards one of the brightest stars in the sky, which is the star of the eagle, and he said: This can be seen The period is easily visible to the naked eye as a bright spot on the west side at nightfall.
He added, “This star is classified from the spectral rank A and has a temperature of 9600 degrees. Upon analyzing the spectrum, the main absorption lines for this type of star appeared, which are alpha hydrogen, beta hydrogen, gamma hydrogen and delta hydrogen lines. President”.
The astronomer “Odeh” pointed out that by looking at the attached image, he notes that the blue lines, which are standard lines drawn previously by the computer program, coincide with the bottoms of the curve obtained from the observation, which indicates the accuracy of the observation and its conformity from the global results.
He explained that after that, the observing team directed the telescope towards the former star in the Parsi Group, which is a star of the spectral order M, and is characterized as a giant bright star in size but low in temperature, as its surface temperature is estimated at only 3700 degrees, and many absorption lines appeared in its spectrum. Titanium oxide compound. Note that the standard blue lines coincide with the bottoms of the observing curve.
The director of the International Astronomy Center stated that after observing many stars of different spectra, the telescope was directed towards the planets Uranus and Neptune, and they have almost the same curve, and it was clear through the curve that there are several absorption lines belonging to methane.
He explained that observing celestial bodies in this way provides information about the chemical composition of the observed object, as well as providing other important information such as the speed of approach or distance of the observed object from the Earth.
The astronomer “Odeh” said in the conclusion of his speech that this observation was made using accurate, but low-cost astronomical devices, and that anyone interested in astronomy can make and train quickly.
Sabq electronic newspaper