Post your random pics!

[marcuspeh]

 

[Gabe]

My first long exposure shots I've taken. I know they're crap, cut me some slack, I just used my iPad camera

I really wish this one wasn't focused on the dirty window rather than the Lightning, would've made a mighty fine photo:

And then my fav for the night:

 

[NightExplorer96]

Oh man, this little guy scared the crap out of me! I was watching YouTube videos, then he decided to sit on top of my PGL's for about 20 mins :wtf: I guess he likes lasers too?

Anyway, after awhile I just chased him downstairs and watched him moved about until he left. Decided to get a couple shots of the little guy!

PS: I guess having a grasshopper in your home means you will get money soon haha

-Alex

 

[Deleted member 49011]

Arduino RTC VFD Clock boxed up , Transformer on front is 1.6Va 230V-7VAC and second picture is my Arduino RTC Numitron Clock in a old DPSS laser head also mains powered

IMG_1166[1] by TwirlyWhirly555, on Flickr

IMG_1168[1] by TwirlyWhirly555, on Flickr

 

[The Lightning Stalker]

Nothing to see here, just some lid flooding the
ISS with packets

 

[T_Warne]

ummmmm... wut?

 

[Gabe]

ummmmm... wut?

He said: "Nothing to see here, just some lid flooding the
ISS with packets"

 

[diachi]

ummmmm... wut?

A lid is "An operator who exhibits poor operating practices."


Edit: that's an interesting looking antenna you have there!

 

[The Lightning Stalker]

A lid is "An operator who exhibits poor operating practices."


Edit: that's an interesting looking antenna you have there!

Thanks they are known as turnstyle
Doesn't work very well, though

 

[IanP2015]

taken a few days ago the still is from a short video so the quality isnt the best

 

[Alaskan]

I work as a telecom tech/engineer, sometimes traveling to remote mountain top locations to troubleshoot radio system problems, thus my ride to work this morning didn't have wheels. Thought I'd share some photo's and video of the part of Alaska I'm living near:

Above, getting ready to leave Valdez, Alaska​

Above, on the way to Hitchinbrook Island, Mount Etches.​

Landing on Reef Island for a few minutes to check a remote UHF link radio at that location before continuing the trip​

Photo's and video aren't too bad for an iPhone


...
...and video of cross country scenery along the way to our destination on Hitchinbrook Island & landing on Mt. Etches​

 

[diachi]

Interesting fact that not many people seem to know outside of the industry:

The "spikes" you see on the front (top and bottom) of some helicopters are actually, essentially, scissors. They are there to cut through cables in the event that a helicopter flies into something like a power line. We have them on most if not all of the Bell206/212/412s at work. Note, I'm not a helicopter pilot or engineer, I'm in IT.

From Wikipedia:

The WSPS (Wire Strike Protection System) is designed to channel a wire or cable into the cable cutter, score and weaken it as it travels into the cutter assembly, and "cut" a wire before it can entangle the rotor system or cause a crash.

 

[Deleted member 49011]

Weekend project ,

Multiplexed 4 Digit VFD RTC with large single displays , soon to be in wooden case .

5mS per digit in a 21mS window , so refresh rate is 45Hz ish , 24 volts on anode , DS3231 RTC .

IMG_1206[1] by TwirlyWhirly555, on Flickr

IMG_1204[1] by TwirlyWhirly555, on Flickr


IMG_1203[1] by TwirlyWhirly555, on Flickr

 

[Alaskan]

Love those tube clocks, so cool.

Here's a photo I took near Prudhoe Bay, Alaska yesterday evening at 6 PM. The sun never sets in the summer up here. Notice how low the satellite dish is pointed towards the satellite Clark belt at the equator, it's elevation is so low it almost looks like a terrestrial microwave link, near top of the world up there!

 

[Alaskan]

Random photographs with lots of text:

New host with a huge 3 inch diameter lens with a 2.25 inch clear aperture on the end (tube ID) of which 2 inches are used by the long sided/fast axis output of the laser diode. With my 100mw (over driven) single mode 520nm laser diode, the worst case estimated divergence for the 2 inch diameter beam output is close to .02 mRad. With that estimate and if I am using pseudonomen137's online calculator properly, this means the beam expands to just over 8 inches diameter at a five mile distance, 27 inches at 20 miles. This beats the pants off a common 1.5 mRad DPSS green laser which would have nearly a 40 foot diameter spot at 5 miles distance.

Strange as it might seem, due to the lower divergence of a single mode diode the spot intensity (from reduced size) at a distances of over a quarter mile should be a bit higher than a 1 watt multimode diode with this same lens setup.

I'm using a three element lens to partially collimate the output of the diode first as well as adjust the size of the spot which lands on the large PCX lens, had to screw the lens all the way in past normal infinity focus to the mechanical stop point to widen the beam back out to cover most of the PCX lens diameter. I could have done so using the other side of the focas point, but found doing so made a nicer beam.

Host built by Ehgemus PS: Just my arm and hand are fat, the rest of me is in great athletic shape.

http://www.pseudonomen.com/lasers/calculators/diameterCalculator.html

The apparent awful choppiness of the black ring around the lens in all three photo's is an artifact from reducing the image size, somehow.

 

[Smeerworst]

Runs and hides....