Laser from plane scanning queens ny last night | |
Anonymous Coward User ID: 17090286 United States 11/19/2012 07:37 PM Report Abusive Post Report Copyright Violation | |
ravenswoodPJ (OP) User ID: 21273978 United States 11/19/2012 07:52 PM Report Abusive Post Report Copyright Violation | |
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Anonymous Coward User ID: 4637200 United States 11/19/2012 08:32 PM Report Abusive Post Report Copyright Violation | May have been one of these. [link to www.wickedlasers.com] You can buy attachments that shape the beam and one of them is a scan line. I've got the 750 mW unit myself and you can see it for miles, actually outer space... |
Burt Gummer User ID: 7702124 United States 11/19/2012 08:36 PM Report Abusive Post Report Copyright Violation | My son came home at 3 am this morning.He told me that while he was walking home from the subway a plane of some sort was fling over head he looked up at it and saw that it had a green light on the bottom of the plane from which a green laser scanned across a large area of ground and passed over him as well,a gas station attendent saw the same thing as him and tried to hide from it.He stayed out side for awhile and the plane continued ot fly over the area scanning.Did anyone else happen to see this or does anyone know what this could be about? Quoting: ravenswoodPJ Possible survey of what is left of Breezy Point?? Amid the Ashes, a Statue of Mary Stands as a Symbol of Survival [link to www.nytimes.com] Last Edited by Useless Cookie Eater on 11/19/2012 08:37 PM |
Anonymous Coward User ID: 24398591 United States 11/19/2012 08:39 PM Report Abusive Post Report Copyright Violation | May have been one of these. Quoting: N3m3s1s [link to www.wickedlasers.com] You can buy attachments that shape the beam and one of them is a scan line. I've got the 750 mW unit myself and you can see it for miles, actually outer space... |
Anonymous Coward User ID: 27999638 United States 11/19/2012 08:52 PM Report Abusive Post Report Copyright Violation | |
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LASERGURU User ID: 28023670 Canada 11/19/2012 09:01 PM Report Abusive Post Report Copyright Violation | Cheap green lasers can be purchased online for ~30$ which would be visible on the ground from a plane, and vice-versa. Precisely why you dont point at aircraft. Given the distance to the viewer on the ground, it would be difficult to distinguish the exact positioning / point of emission ie window, or bottom of the craft. To the poster above me ^^ 1,000$ is a common price for a class 4 DPSS 532, given that the laser is rated at 750mW stable and not just the peak. WL is notorious for fudging numbers... Depending on the distance, and divergence (with or without beam expander) 750mW being shone at anybodies face would be pretty dumb. A class 4 can cause eye damage to unprotected eyes over a great distance. Had it have been a common class 4 blue 445nm, you get into the 'blue light hazard' as well. As for seeing it from space, doubt it.. I have seen it done with the ISS, but from a dark location and with a stable 1W+ 445nm. They may see a faint flicker but no beam is going to appear to them. Wickedlasers sales propaganda is full of BS, do some reading and avoid those scamming morons. |
ravenswoodPJ (OP) User ID: 21273978 United States 11/19/2012 09:02 PM Report Abusive Post Report Copyright Violation | I dont have many more details about this but no it wasnt a little laser pen the green laser covered over more than a block of homes.Thanks for your help,just thought someone from nyc might have seen the same thing.P.S to the OP from the united kingdom who called me a dumd fuck that wasnt very nice of you,how would you like it if I was to say England is a fag country,or do you people still lean on those skinny umberellas and pick hankies out of your sleeves that wouldnt be very nice of me would it? |
Anonymous Coward User ID: 27963234 United States 11/19/2012 09:03 PM Report Abusive Post Report Copyright Violation | Given the distance to the viewer on the ground, it would be difficult to distinguish the exact positioning / point of emission ie window, or bottom of the craft. Quoting: LASERGURU 28023670 could we work some assumptions depending on the make, angle & height of the craft at the time? obviously certain planes simply have no windows pointing the to ground unless the plane is landing or banking right? |
Anonymous Coward User ID: 19131216 Canada 11/19/2012 09:05 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 27963234 United States 11/19/2012 09:05 PM Report Abusive Post Report Copyright Violation | |
Anonymous Coward User ID: 14494585 United States 11/19/2012 09:10 PM Report Abusive Post Report Copyright Violation | I dont have many more details about this but no it wasnt a little laser pen the green laser covered over more than a block of homes.Thanks for your help,just thought someone from nyc might have seen the same thing.P.S to the OP from the united kingdom who called me a dumd fuck that wasnt very nice of you,how would you like it if I was to say England is a fag country,or do you people still lean on those skinny umberellas and pick hankies out of your sleeves that wouldnt be very nice of me would it? Quoting: ravenswoodPJ Loos like ravenswoodPJ is gay and it makes him cranky. |
LASERGURU User ID: 28023670 Canada 11/19/2012 09:29 PM Report Abusive Post Report Copyright Violation | could we work some assumptions depending on the make, angle & height of the craft at the time? obviously certain planes simply have no windows pointing the to ground unless the plane is landing or banking right? Wouldnt really matter, its entirely possible and have read of people doing this. The initial beam is tiny, averaging 2-3mm collimated to parallel. To get the angle would simply require the operator of said laser to be holding it at the top of a small window aiming down, keeping it as close the bottom edge of the frame as possible. As the beam covers distance and diverges, it becomes quite large. The ground viewer would not see a small dot, rather a large area being covered. To assume anything related to the plane other than height would pointless. Saying they were 'scanning', as in rendering an image, is unlikely. Either the OP is exaggerating, or the person who saw it was. Military uses IR systems, not visible wavelengths for one. Camera systems, guidance, all infrared. Even the small survey systems they use to scan a crime scene or construction site are IR. Using visible wavelengths means that they cant filter out the noise given off by street lights, cars, houses, and during a day operation, DAYLIGHT.. For further assumption, lets refer to Occam's razor |
Anonymous Coward User ID: 21291600 United States 11/19/2012 09:31 PM Report Abusive Post Report Copyright Violation | This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models. |
Burt Gummer User ID: 7702124 United States 11/19/2012 09:32 PM Report Abusive Post Report Copyright Violation | [link to www.airborne1.com] Quoting: Salt This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models. Makes sense. They are making a topographic 3-D map of what is left of Breezy Point after Sandy. |
truthwillsetyoufreeagain User ID: 23952927 United States 11/19/2012 09:33 PM Report Abusive Post Report Copyright Violation | Maybe it has to do the the areas that are damaged from Sandy. ______________ As long as I am an American citizen and American blood runs in these veins I shall hold myself at liberty to speak, to write, and to publish whatever I please on any subject.” - Elijah Parish Lovejoy(1802-1837) All tyranny needs to gain a foothold is for people of good conscience to remain silent...Thomas Jefferson The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government...Thomas Jefferson When the people fear their government, there is tyranny; when the government fears the people, there is liberty...Thomas Jefferson Truth will ultimately prevail where there is pains to bring it to light...George Washington |
Anonymous Coward User ID: 4832919 United States 11/19/2012 09:38 PM Report Abusive Post Report Copyright Violation | My son came home at 3 am this morning.He told me that while he was walking home from the subway a plane of some sort was fling over head he looked up at it and saw that it had a green light on the bottom of the plane from which a green laser scanned across a large area of ground and passed over him as well,a gas station attendent saw the same thing as him and tried to hide from it.He stayed out side for awhile and the plane continued ot fly over the area scanning.Did anyone else happen to see this or does anyone know what this could be about? Quoting: ravenswoodPJ Yeah, that was a stupid troll ray and you were clearly hit by it. |
LASERGURU User ID: 28023670 Canada 11/19/2012 09:38 PM Report Abusive Post Report Copyright Violation | [link to www.airborne1.com] Quoting: Salt This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models. [link to www.airborne1.com] Quoting: Salt This technology involves a scanning and ranging laser system that produces pinpoint accurate, high-resolution, topographic maps. The original technology has been in existence for 20-30 years, but the commercial applications for LiDAR generated topographic maps have only developed within the last decade. Today the entire process of airborne laser mapping is highly automated from flight planning, to data acquisition, to the generation of digital terrain models. Makes sense. They are making a topographic 3-D map of what is left of Breezy Point after Sandy. Those systems use IR, they do not paint the landscape in visible green light... |
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