[LMB] OT: Arecibo
baur at chello.at
Sun Nov 22 21:56:10 GMT 2020
Am 22.11.2020 um 21:34 schrieb Howard Brazee:
>> On Nov 22, 2020, at 1:24 PM, Markus Baur via Lois-Bujold
>> <lois-bujold at lists.herald.co.uk
>> <mailto:lois-bujold at lists.herald.co.uk>> wrote:
>>> Normal radio telescopes just listen. Radar is when signals come
>>> from Arecibo and bounce off of whatever it is looking at, and come back.
>> which is why it is useful only for short range targets like asteroids
>> or planets
> I tried to take a photo of the Andromeda galaxy, but there was
> something wrong with my flash.
your flash worked, but the flast is still on its way to andromeda ..
More information about the Lois-Bujold