Mr Giovanni Di Giovanni

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  • in reply to: Light Pollution Consultation and CPRE Star Count #615791

    Years ago, a proposal was made in Italy for a national law against light pollution. All kinds of discussions were immediately raised. Television programmes were flooded with chatter on the subject. Presenters improvised themselves as experts on the problem. Interviews were conducted with lawyers, with technicians who only then knew about the problem, with poets and painters who described the stars (perhaps without ever having looked up at the sky), with storytellers and people from the street. Olympic wrestling champions were asked if they would feel safe after ‘switching off’ the lights in the city, they answered no. In short, everything contributed to confusing people’s ideas. Epilogue? The bill was never considered by the Chamber of Deputies, it was rejected by the pre-chamber committee. Current situation? there are many regional laws and laws that no one is complying with. Just like the ‘Manzonian cries’. 1st chapter of ‘I Promessi Sposi’ by Alessandro Manzoni.

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    I cannot remember if I have already posted this image. Certainly, my location is the worst for observing the sky. Such trouble I wouldn’t wish on my worst enemy.

    in reply to: Mars Occultation #614447

    Dear fellow amateur astronomers
    I thank you all for the consideration you have given to this note of mine. My sky has been very bad, overcast with black clouds. For my study purposes I will use the sequence taken by Mr Ian, to whom I offer my compliments and ask for one more piece of information: What is the instant of the start of the shot (UT).
    My compliments for the photograph taken by Nick. I would not have been able to make such a shot and photograph.

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    in reply to: Mars Occultation #614355

    Alex, thank you very much. I would need the images of the occultation, from there I would extract the nmeric data I would use. From my location the weather is bad, so I probably won’t be able to observe the event. Ciao.

    in reply to: Partial solar eclipse of 2022 October 25 #613265

    Hi Nick, I will do a thorough processing and study of the images I extracted from your You Tube film. Thanks to you I was able to follow the whole phenomenon. You will hear from me soon. Thanks again. Regards.

    in reply to: Partial solar eclipse of 2022 October 25 #613262

    Dear friends, I present to you my photographs of today’s solar eclipse. I have just one question for you: How much would you have bet that the cloud would not move for the duration of the phenomenon? Is this a statistically significant phenomenon? It went wrong for me, very wrong. Best regards to you all.

    in reply to: Partial solar eclipse of 2022 October 25 #613224

    Skies with high but thin clouds are also forecast for my locality, I hope well. However, for my study of the phenomenon it is only necessary to have the cusps of the solar sickle visible.

    in reply to: Partial solar eclipse of 2022 October 25 #613221

    Dear Nick
    I saw the solar disk on the page. I download images every 2-4 minutes. I have a few things to ask you:
    1) Does the image come in real time? What is the phase shift?
    2) The disc image would be fully suitable for my study of the phenomenon. The only small problem is that the disc is too big, it is not entirely included in the picture.
    3) If the disc remains stationary within the frame, it is not easy to establish the North-South direction. To do this, it would be necessary to bring (for example every 15-20 minutes) the disc close to the east side of the frame and NOT chase it until it reaches the west side. In this way, the alignment of the various images will make it easy to establish the North-South line on the painting itself. Can you make these breaks?

    This is the procedure I will follow with the camera (nikon) on my telescope:
    – Entire disc in the frame;
    – Periodically interrupt the tracking and take 3 or 4 images until the solar disc starts to leave the frame.
    Here (L’Aquila near Rome the weather should be permissive)

    Thank you and good observation

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    in reply to: Partial solar eclipse of 2022 October 25 #613216

    Greetings everyone, I am looking for a few amateur colleagues who can collaborate in observing the phenomenon. More precisely, to establish the timing of the contacts and the maximum phase, together with the contact angle (clockwise from the north). For arrangements
    Thank you and greetings to all.
    Giovanni (Italy)

    in reply to: Antique Steinheil München Refractor #613027

    Andra, hello, I am also Italian, I live in L’Aquila. That must be a mid-19th century telescope. Nothing exceptional: lactescence (spherical aberration), chromaticism, coma. If you want to show it off in your living room (after you’ve cleaned it up a bit, of course) it might do. However, if you plan to observe the sky with it, then I recommend using that money to spend a nice evening in a restaurant with a pretty girl. Maybe I’m wrong, but I remember my mother always telling me: dear son, old stuff dies in the house of fools.

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    in reply to: Last night’s planetary observations #612644

    I too am passionate about planetary observation. I first saw Jupiter with its 4 satellites through a self-made telescope (the one in the attached photograph. I was totally penniless, not even money for the cinema). It was a cardboard tube with two lenses. As objective an old biconvex spectacle lens (+ 2 diopters) d30 mm, the eyepiece made with a small lens from a wire counter produced about 25X. The finder had been given to me a few days earlier. Red and blue colours were abundant, but I saw the planet as Galileo had seen it in 1610: orange luminosia star in the centre and four small stars almost aligned. I enjoyed telling everything to some classmates at school and to the Italian and literature teacher. We were studying the meaning of Don Ferrante in the novel I Promessi Sposi by A. Manzoni. It was a cold, clear winter evening. I had no gloves and at a certain point I could no longer feel my fingers. A wonderful memory that still excites me after so many years.

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    in reply to: map of light pollution trends #612618

    I live in L’Aquila, a city 100 km from Rome, at the foot of the highest mountains on the Italian peninsula The peaks of Gran Sasso d’Italia are between 2400 and 2912 m (Corno Grande) above sea level. Snow abounds and 6 months of the year you can ski. An old saying is: on our snow, the sun never sets. And indeed here is the city at night. Take a look at the photograph.
    In the evening, three floodlights were turned on, shooting light straight up into the sky. Who is to be told? Here, no one seems to understand.

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    in reply to: map of light pollution trends #612586

    Yes, Daryl, I live in Abruzzo in L’Aquila, a small mountain town at the foot of the Gran Sasso d’Italia at an altitude of 700 m. Tivoli is not far away. The 2009 earthquake destroyed L’Aquila, the (very slow) reconstruction is turning the town into a beam of lights shot everywhere and at random. Especially since LEDs consume less electricity. Even in the countryside, you need at least binoculars to spot the Pleiades clusters and Perseus, M42 and M31 can barely be discerned through a telescope, while the Lyre ring nebula has disappeared completely. Only the Sun, Moon and the shining planets remain.
    In this hateful and hellish environment, I almost had to give up the telescope. For the past three years, I have been devoting myself to the study of twilight phenomena. At sunset, when the sky is clear, I take a photograph of the anti-solar sky. Then, from these photographs I determine the level of transparency of the local atmosphere.
    At first I thought it was a sad fallback. Now, I have an archive indicative of air pollution and the level of ozone in the local stratosphere.
    The photograph shows the beautiful view from my home, which shows the respect we have for the natural environment.


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    in reply to: map of light pollution trends #612561

    You are lucky, here in Italy the stars have practically disappeared from the sky. Today was a very clear day, this evening (21 UTC+2H) the sky is still without the Moon but very few stars can be seen (5 in all including Jupiter in the east). The sky in Italy is a real disaster. From the high plateau of Campo Imperatore (2100 m) there used to be clusters of stars with the Milky Way marvellous, so that the constellations could be spotted with great difficulty. Now, clear skies, glimpses of cities near and far, mists. The eyepiece field is white! Pollution would not exist if the air was not laden with aerosols from industrial waste and cars. Light is backscattered by molecules (Rayleigh scattering) and aerosols (Mie scattering) + various optical effects (reflection from particles much larger than the wavelength of light).

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    in reply to: Accultations Uranus and Mars #612484

    Throughout the night the sky was overcast with heavy rain, lightning and thunder. I hope for the occultation of Mars on 8 December. Again, thank you for your availability.
    P.S. the image above is this one.

    in reply to: Accultations Uranus and Mars #612462

    Pictures from yesterday

    in reply to: Accultations Uranus and Mars #612461

    …and this is yesterday’s sky. View from the Gran Sasso (Pizzo Intermesoli, 2635 m). The picture embraces almost half the horizon above the Adriatic Sea, North is towards the centre of the picture. For tonight I hope well. Thank you and greetings. Ciao.

    in reply to: Accultations Uranus and Mars #612459

    Dear Mark, I think I cannot observe the Moon’s occultation of Uranus. The sky, which until yesterday was clear and deep blue, is today becoming cloudy again. This is the situation at 13 UTC+2H. Unfortunately, it often happens like this. In the afternoon, I will mount the instrument on the terrace of my house, hoping at least for no worsening.You will have more news. You will have more news. Bye.

    in reply to: CG Dra: a VSS campaign #612232

    Maxim, I made an initial note of my study in ‘Astronomia UAI’ magazine of the ‘Unione Astrofili Italiani’. However, it is written in Italian, if you want to give me an @ I’ll send it to you.

    in reply to: Accultations Uranus and Mars #612228

    Thank you Matk, I will send you a note about the purpose of the observation. Of course there is also the unknown cloud in the Mediterranean basin. I hope well.
    I’ve seen your planet shots on youtube. Congratulations on everything, Jupiter and Mars are a sight to behold.

Viewing 20 posts - 1 through 20 (of 31 total)