K. Smith wrote:


The one on my boat is "maybe" visible at 2 miles, in complete darkness
you can see a pin prick of light but it's so tiny you're not sure if
it's just what you see when you look that hard at the dark:-) but by
well over a mile it's definitely in play & by 1 mile very clear.

Here the pleasure boat rules just require "visible" at 2 miles.

K


What brand of LED are you using?

There are some (pricey) LED lights made in the Netherlands, called LOPO
lights, that are certainly a lot brighter than a standard bulb. I first
noticed them about a year ago at a boat show and they appeared
dazzlingly bright even in an indoor setting with a tradeshow light
level.

You could probably get a "deal" on some if there isn't currently a
distributor in AUS.

http://www.lopolight.dk/

wrote:
K. Smith wrote:



The one on my boat is "maybe" visible at 2 miles, in complete darkness
you can see a pin prick of light but it's so tiny you're not sure if
it's just what you see when you look that hard at the dark:-) but by
well over a mile it's definitely in play & by 1 mile very clear.

Here the pleasure boat rules just require "visible" at 2 miles.

K



What brand of LED are you using?

It's not an "approved" anchor light I think I mentioned it here probably
at least 2 yrs ago, it's just a large garden light, the transformers
that come with them are 12 volts so they're OK, all plastic so no
corrosion & the current one has been there at least 2 but probably 3 yrs
now.

Even though they've come down in price it was only $20 back then.

Ummm a bit sheepishly:-) I better give credit when it's due Chuck; good
job on the NG well done.

K



There are some (pricey) LED lights made in the Netherlands, called LOPO
lights, that are certainly a lot brighter than a standard bulb. I first
noticed them about a year ago at a boat show and they appeared
dazzlingly bright even in an indoor setting with a tradeshow light
level.

You could probably get a "deal" on some if there isn't currently a
distributor in AUS.

http://www.lopolight.dk/

I use 6 resistors and put everything in parallel so that if one LED or
resistor goes bad the entire light does not go out.
Fresnel lenses are useful if the light is emitted in all directions.
In these LEDs, the light is emitted into a 45 degree cone so the
Fresnel lens is not too useful. My 6 LEDs are spaced so their cones
overlap.
As far as Shrodingers Cat goes, my next cat will be named "Psi" and her
kitten will be named "Eigenvalue".