1: Chinese PGO for the RPG rocket launcher
2: Bulgarian PGO-7 
3: NPZ PGO-7
4: PK-23 blinking red dot
5: PK01-VM
6: PK01-V
7: PK01-Vi
8: PK-A Original
9: PK-A Venezuela
10: PK01-VS
11: 1PN58/NSPUM Night Vision
12: 1PN34/NSPU Night Vision
13: Kobra EKP-8-02 Gen 2
14: Kobra EKP-1S-03m Gen 1
15: PK-AS
16: PKS-01
17: 1P76 Rakurs
18: NIT-A
19: PK1/1P63 Obzor
20: PO 3.5x21P2 with NPZ mount
21: PO 3.5x21P
22: PO 3.5x21P Venezuela
23: PO 4x24P
24: PSO-1 from Izhmash
25: PSO-1 from NPZ
26: PSO-1-1 from NPZ
27: PO 3-9x24
28: Chinese JJJ PSO type optic for NMD86
29: 1P29
30 1P78 Kashtan
31: Romanian LPS/TIP2 PSO type optic
32: POSP 4x24v
33: POSP 4x24v AA battery model
34: POSP 8x42
35: Zeiss ZFK 4x25
36: MP4-20 spotter scope
37: yM8 spotter scope

One of the first images from the CMSdetector, a key component of the LHC, showing the debris of particles picked up in the detector’s calorimeters and muon chambers after the beam was steered into the collimator (tungsten block) at point 5 (Image: CERN)

collimator … who are you? you are new… I like you. woot woot for the number 4 top fan for the month. leading the poll of stalkers is karahume (I STILL CAN’T TAG YOU AND I’M SORRY. I DON’T KNOW WHAT’S WRONG) onehellofamegan, and constellationsofanintrovert (WHO I ALSO CAN’T TAG…. MEIN GOTT. VOUS ETES UN BUS, TUMBLR, VOUS ETES UN BUS. SIE SIND NICHT WERT BROT FUR MICH)

How To Test Fiber Optic Splitters Or Other Passive Devices

A fiber optic splitteris a device that splits the fiber optic light into several parts by a certain ratio. For example, when a beam of fiber optic light transmitted from a 1X4 equal ratio splitter, it will be divided into 4-fiber optic light by equal ratio that is each beam is 1/4 or 25% of the original source one. A Optical Splitter is different from WDM. WDM can divide the different wavelength…

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In the simplified beam session, several beam line elements including the MLC frame have been made transparents so one can see the individual leaf motion as well. To further simplify the simulation, we decided to move the patient rather than the rest of the beam line, so the linac head always appears to be at the same place.”

New Post has been published on VR-Zone

Students develop sound-based extinguisher to put out flames

Students develop sound-based extinguisher to put out flames

A pair of engineering students from George Mason University have developed a sound-based fire extinguisher. The device is composed of basically an amplifier, a power source, and a cardboard collimator to direct the waves.  Initially, the students were testing ultra-high frequencies to see if it …

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Daytime moon with 4mm lens (225x). Two things: still lots of dust (I need to be more vigilant) and the circle you can see around the edges is either that the 4mm lens doesn’t fit quite perfectly into the camera adaptor, or this is a result of an uncollimated telescope. Working on that.

First light with the Hyperstar. I had a small window to shoot on Tuesday evening, so I thought I’d take the Hyperstar for a spin. I have a 9.25 SCT, and I used a Canon 70D with the Hyperstar. There were lots of high clouds and I only did a very rough polar alignment. I also need to work on getting the collimation a bit better.

This is a single 13-second exposure at ISO 1250. Yes. Only 13 seconds! The Hyperstar makes the SCT into an F/2.3 monster. With better alignment and no clouds, I am very excited to see how far I can push things.