Post your random pics!

[RedCowboy]

I'm sure you know, but just to be certain, you know that isn't a diamond, right? The largest synthetic diamonds are nowhere near that size, so I hope you didn't pay a lot for it.

Thanks for that micheal, I am learning the difference between man made diamond, Cubic Zirconia, and Lab Corundum now, you helped me to become a little less ignorant.

 

[GSS]

Oh yeah I love doing the reflection experiments wicked relaxing and now that Hakzaw sent me some lumia pieces its kinda a daily thing. Even though you think its a cheap camera I think some of the beauty of it was lost because of the black cloth was seeping through but what do I know. but the reflection pics were sweet thx. RedCowboy whats the date of that lucky wheatback pennie you use on just about all your pics, I would love to hear if it has a story I cant see VDB printed on it at the bottom

 

[diachi]

Sunrise this morning. My camera doesn't quite do it justice.

 

[Gabe]

Beauty! Sunrise was really nice this morning too but no camera

 

[GSS]

I love these Canadian sunrises you all are lucky

 

[Cyparagon]

$15 means it's some cheap glass. ZrO2 is cheap, but it's not $15 cheap. Best case scenario is lead crystal at that price. If you just want a clear object with facets to bounce light around, it doesn't really matter though.

 

[brucemir]

Here are a few pics of a 589, 473 and 532 shot into a real diamond. I took a break from what I was photographing at the time to give my wifes Xmas gift a laser treatment a few weeks before Xmas. The ring has 2 individual 1/2 karat diamonds and the lasers were shot into only one of them since it got too bright with 2 lasers to get the type of photo I wanted to get. I was really impressed with how much more defined the reflected beams are coming off a diamond as opposed to the many different pieces of optics and lasers I have photographed over the past few years.

 

[Isaac Clarke]

Nice pictures from the master of laser photography Brucemir!!!

 

[RedCowboy]

Neat, the smaller and more facets the more varied beams.
This 40mm may be lead crystal, the description says:
If 180 cts Huge Brilliant Round 40 mm Lab White Diamond Crystal AAA | eBay

This is what I bought, I have no way to test it but it is pretty.
The smaller Russian labs are AAAAAA and cost more, anyway the technical specs are lacking, but it is pretty and refractive glass if nothing more.

 

[Alaskan]

A light snow tonight, took a couple of beam shot photo's.

Green is about 1200mw of 520nm expanded to four inches, blue is about 5 watts of 450nm expanded to about 1.5 inches. Brightness comparisons from these beam shots won't be true due to the different expansion ratios, power density is so much lower with the green when expanded that much, the blue looks much better, if both had the same expansion the green would be close enough to look the same to the camera.

These five+ watt output NUBM44 diodes are awesome, imagine if you PBS cube combined two of them for 10+ watts out. Combining a 1 watt green 7475T diode with a 5 watt NUBM44 would be awesome too, that would make a green-blue combination to produce a cool cyan beam.

This is how I'm interpreting this photo, to see what the two colors mixed together would be like, look at the cyan color surrounding the white spot in the middle, but when looking where the mix is most intense in the center it is so white I'm betting the beam itself would be such a light shade of cyan to look almost white, just like in this photo. The camera didn't like the intensity and bloomed the spot to be much larger than it really was, but even when looking at it myself the small 3 inch spot in the middle appeared to be nothing but pure white color to my eyes. Someone really should PBS combine these two diodes, I'm betting on a cyan-white beam! Only problem is the two diodes have much different divergences, I guess working this out optically is the challenge due to their differences.

Here's a short video of the same photo, above:

http://vid853.photobucket.com/album...trim.8386F533-A802-4FD5-9E44-048E9259D640.mp4

You might need a photobucket.com account to view it, not sure.​

 

[Laser Chick]

Not a picture perfect image but getting 2 Bald Eagles flying in the same image is rare around here.

 

[Gabe]

Alaskan, didn't CDBEAM combine those two? Or was it a NUBM07E and a NDG7475? I think so, so wouldn't it just be a slightly bluer shade of what CD has?

 

[Alaskan]

He's working on it, I haven't heard he has finished it enough to be able to test yet. I want to buy three of his cyan cannons when he has them done. I'm anxious to see these combined, he might be several months away before his are working, he takes his time to build extraordinarily fine tuned optics. I think you are right, he is planning on the 07E at 460-465nm (maybe higher?), and will be a nicer cyan color than this, exciting!

Looking at RHD's perceived brightness calculator, I'm betting combining a NUBM07E with a NDG7475T will be about the same brilliance as combining a NUBM44 and a NDG7475T, so even though the 44 is at 450nm, it should be just as bright, except a darker tint of cyan. If you pushed the 07E a little harder the perceived brilliances come closer together. You could push either of these blue diodes harder to produce more output, but I choose more conservative power outputs.

Edit: If I post more about this I need to make another thread, this is for OUR photo's, I shouldn't have added more stuff which isn't a photo I took myself but I wanted to show the differences in perceived brightness with RHD's program.

 

[RedCowboy]

I'm sure this has been done a million times and my camera is a cheapie, but I still get a kick out of it.

 

[Laser Chick]

Love the speed limit sign

BTW: It must be night time

 

[GSS]

Love the speed limit sign

BTW: It must be night time

Too cool thx LC Always wondered and yes im going to get drilled for this question but is it the earths rotation that makes the shuttle travel at 17,500 mph or the shuttles engines once in orbit?:yabbem: