[Laser] test

[Art]

Hi Joe,

Good to see you on the laser list, hope you're still ballooning.

The reflectors left on the moon are large and precise.

However, with the very high power and tightly collimated lasers
available to NASA, and state of the art aiming systems (laser ranging
stations, space observatory class), they have many misses. The FOV's are
very narrow, so narrow in fact that the Moon has to be tracked, the RX
has to be moved properly after the pulse is sent. For each pulse, only a
few photons, or a few 10's of photons are received back. And, the Moon
is never completely dark, optics aren't perfect....so the ambient light
is QRM.

Libration is a factor, which is unavoidable.

Regards,

Art




On 1/1/19 9:46 AM, Joe wrote:
> Yup,
> But very very quiet.
>
> A Question. How much power laser would it be needed to use the
> reflectors left on the moon?
>
> Joe WB9SBD
> Sig
> The Original Rolling Ball Clock
> Idle Tyme
> Idle-Tyme.com
> http://www.idle-tyme.com
> On 12/31/2018 11:53 PM, bernieS wrote:
>> Is this list still alive? Fireworks are causing QRM tonight. Happy
>> New Year.
>>
>> -bernieS
>>
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