Sextuple red build

[MisterWilling]

Hey Andy,

For the six diode build, did you use the 3x or 2x telescope from edmunds?

Thanks,
Austin

[andy_con]

3x

with regards to the telescopics what ever size you pick (mm) you need to stick as close as you can to these -

NT47-348 - Plano-Convex Lens 25mm Dia. x 75mm FL VIS 0 Coating

NT47-911 - Plano-Concave Lens, 25mm Diameter x -25 FL, VIS 0 Coating


i went with -

NT47-877 - Plano-Convex Lens 15mm Dia. x 75mm FL VIS 0 Coating

NT47-906 - Plano-Concave Lens, 12mm Diameter x -24 FL, VIS 0 Coating

as you can see the specs are pretty much identical to the first ones. also i think in future i would probably go a few mm bigger on the 877 lens.


The NT47-348 with a NT47-911 will give you a 3x telescope and about .9mR beam
The NT47-349 with a NT47-911 will give you a 3.4x telescope and about 1mR beam
The NT47-350 with a NT47-911 will give you a 4x telescope and about 1.2mR beam


hope that helps

[MisterWilling]

hope that helps

Yeah, thanks a bunch.

I went with:

NT47-890 Plano-Convex Lens 20mm Dia. x 80mm

NT47-906 Plano-Concave Lens, 12mm Diameter x -24 FL

From what you said I should get somewhere around 3.2x Telescope, I'm also going with a larger initial lens per your advice.

[andy_con]

ignore me .

[MisterWilling]

The NT47-349 with a NT47-911 will give you a 3.4x telescope and about 1mR beam

OIC, well the NT47-349 you suggested has a 85mm FL so I went in between 75mm and 85mm. I havn't place the order so I can just get the 75mm FL lens. Thanks

[andy_con]

sorry ignore me was looking at the wrong figure

[hobbybob]

Andy how much does a set of these lenses cost?

[andy_con]

60 odd quid .

[dar303]

pretty ok for the output and beam you get!

[andy_con]

ok two tec's added.

has taken a number of hours to get the temp stable and the lens adjusted but seem to have got it sorted now.

will do some further testing tomorrow.