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Personally, i find the use of green lasers by other people very annoying. While it’s a great tool for pointing out objects to an interested group, it’s distracting and annoying to anyone not in that group. So a huge modicum of discretion is required, especially at public telescope nights. And any reasonable person would never point out flying aircraft.

Then there is the frequent misuse. I was at the beach in the Lake of Two Rivers camp ground and small group of, i would guess non-astronomy people, armed with a couple of green lasers proceeded to play light sabre tag. I did voice my opinion, but it was not welcome and they did not stop.

Stephen J McIntyre

mailto:mcintyre_sj@...

On Aug 18, 2022, at 2:04 PM, Attilla Danko <danko@...> wrote:

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It's illegal to project any concentrated light source into canadian controlled airspace. especialy lasers > 1 milliwatt.

Some think this is reasonable to protect landing aircraft.

But check the fineprint: everywhere in canada above 30000 feet is controlled airspace.

Mark Garneau's law restricting hobby drones is equally excessive.

On Thu, Aug 18, 2022, 13:56 PolyWogg <thepolyblog@...> wrote:

fyi you may be hard pressed to find much legally since TC rules are quite precise on power prohibition.

On Thu, Aug 18, 2022 at 12:09 PM Mike Wirths <mikewirths1@...> wrote:

I would suggest not a 5mw laser, go for 10mw the 5's are hard to see in light polluted skies!

On Thu, Aug 18, 2022 at 11:57 AM Richard Harding <r.elleray.harding@...> wrote:

$20 on Amazon…next day delivery

Richard??

On Aug 18, 2022, at 9:49 AM, ALbert <alboodie@...> wrote:

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I have one but it doesn't do well in the cold.? Any recommendations? Is it possible to find one locally now that Focus Scientific is no longer?

Cheers,

Albert