[AZ-Observing] Re: Instant criminals
- From: "Jack Jones" <Telescoper@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Tue, 4 Jan 2005 22:50:12 -0700
The distance between Yavapai Point and the Lodge at North rim is almost
exactly 9 miles (47,000 ft.). The area lit up on the back wall was somewhere
around 25 ft wide. That's about 3 ft per mile give or take. The South rim
warriors confessed to using 20 mW lasers against our <5mW lasers, causing
escalation of 'powers' to commence for next year. Even though spread out after
9 mi of travel, they were still bright and flashed brightly to our dark
adapted eyes, but no after-images (or damage, I'm sure).
Jack Jones
Public Events Coordinator
Saguaro Astronomy Club
Phoenix AZ
Telescoper@xxxxxxx
www.saguaroastro.org
Sp@m: Don't try - Don't buy - Don't reply.
Tom sayed:
> Thad hit on the main point: how could one possibly track a vehicle that's
> moving so fast? Also, consider the size of an amateur astronomer's laser
> at the typical distance to an airplane viewed from an observing site.
> Even when we used to set up at Buckeye Hills, where flights came overhead
> on final approach, their altitude was still several miles. The laser is
> visible at this distance, but if I understand the stories from the Grand
> Canyos Star Party North/South Rim laser wars, the beam of a consumer laser
> diverges at a pretty great angle. Wouldn't the spot be several feet in
> diameter at the typical airplane distance of seven-plus miles?
>
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