Amateur Radio Astronomy

Tachyon · Post by **Tachyon** » Sun Jun 12, 2005 10:55 pm

Just wondering if anyone in Singapore/Asia is into amateur radio astronomy?

ChaosKnight · Post by **ChaosKnight** » Mon Jun 13, 2005 7:46 am

I had ideas on how to build one in the past, but gave up because of the large size necessary for the antenna.

Tachyon · Post by **Tachyon** » Mon Jun 13, 2005 8:56 am

Yep. That and also some knowledge of electronics. Not easy as just buying a telescope and fit it with accessories!

ChaosKnight · Post by **ChaosKnight** » Mon Jun 13, 2005 9:27 am

Here's a simple model of my concept.
The antenna array is optimised for 21cm.

ChaosKnight · Post by **ChaosKnight** » Mon Jun 13, 2005 9:29 am

Each pannel is made of 2 acrylic pieces sandwiching a piece of lead. There are grooves on the acrylic to thread the wire.

Tachyon · Post by **Tachyon** » Mon Jun 13, 2005 9:58 am

And what is the length of each panel?

ChaosKnight · Post by **ChaosKnight** » Mon Jun 13, 2005 10:46 am

1 meter. Means the whole array has over 3900 individual antennae connected in series. But this diameter doesn't translate into alot of resolving power.

AGMI · Post by **AGMI** » Mon Jun 13, 2005 11:22 am

http://www.users.bigpond.com/tmccarth/page002.htm

would be interesting to see someone build this in singapore

A 5 YeaR Old · Post by **A 5 YeaR Old** » Mon Jun 13, 2005 2:08 pm

i think if someone really built that, he'll probably be visited by police to find out what he's doing with such a large dish. Security has been alot tighter since 9-11 and the discovery of terrorist cells in Singapore.

but what can we get from radio astronomy? weird crackling noise?

ChaosKnight · Post by **ChaosKnight** » Mon Jun 13, 2005 3:05 pm

Well......you could connect some sort of voltmeter to your antenna. Measure the changes in magnitude of stars in radio....sort of.

Anyone wants to build a dish count me in. i have some idea on how to create a big cheap parabolic dish.