The spacecraft of the day at 1/220!

[Jan Kytop]

Thank you very much for your comments.

[Jan Kytop]

I had previously presented the 12 meter antenna.
Here is now one of the 7 meter antennas of the ALMA radio telescope ("Atacama Large Millimeter/Submillimeter Antenna Array", which includes 66 millimeter antennas (7 and 12 meters in diameter) operating in interferometry.

[dhanners]

Absolutely love the radio telescopes! Wonderful job.

Will they be available anywhere?

[Jan Kytop]

Originally Posted by dhanners

Absolutely love the radio telescopes! Wonderful job.

Will they be available anywhere?

Here, the models:
Education Material - ALMA

[dhanners]

Originally Posted by Jan Kytop

Here, the models:
Education Material - ALMA

Thank you! I appreciate it....

[Jan Kytop]

We remain in the field of the observatories with this impressive building:
the Brihat Samrat Yantra which is a sundial of 27 meters high, which allows to obtain, at the equinoxes, a measurement of the hour reaching an accuracy of 0,5 second. It is the largest equatorial sundial in the world.
It is part of the instruments of the Yantra Mandir, an astronomical observatory established in Jaipur, Rajasthan, in the northwest of India, built on the orders of Maharaja Jai Singh II in his new capital of Jaipur between 1727 and 1733.

Jantar Mantar, Jaipur - Wikipedia

The model is here, I modified it a little:
Paper Models | Jantar Mantar









The model really works but you have to adjust it according to your position on earth, the website explains the procedure. The ramp's drop shadow moves across the side curves.
Noon:
[url]
2P.M.:

[Butelczynski]

Beautiful model. I've heard of this observatory before. This sundial is the largest one there and there are many smaller ones. Entire place is filled with astronomical instruments.

Wiki says that founder build similar observatories in few other cities. Do they still exist?

[Jan Kytop]

Thank you. A very small radio telescope for a change: the 60 cm VST from the Nobeyama Observatory in Japan. It's not big at 1/220.



Model here: https://www.nro.nao.ac.jp/gallery/pa...l/vstmodel.pdf


A scientific article about it: New 60-cm Radio Survey Telescope with the Sideband-Separating SIS Receiver for the 200 GHz Band | Publications of the Astronomical Society of Japan | Oxford Academic

[Jan Kytop]

A Big one now!

The Parkes Observatory, also known as "The Dish", is an astronomical observatory located 25 kilometers north of Parkes, New South Wales (Australia). It was opened in 1961. It has a radio telescope 64 meters in diameter. He is known for having followed many space probes, and in particular transmitted to the whole world the images of the first man on the Moon.

The model, close to 1/220, is impressive, but simplistic, marred by many dotted lines, unrealistic color and significant simplification. I tried to improve it a bit. It is sold in booklet form on the telescope website:
Parkes Radiotelescope Shop
Search: 2 results found for "paper model" - CSIRO Parkes Dish Shop

[panzerlite]

I can't understand how such a large structure at that can be supported on such a small pedestal. Even if it's steel structure is anchored in the ground you would think its pivot would fail in any kind of strong wind.

...tis a mystery...

P-Lite