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This is a picture I created for the tfttf 48 hour challenge. Image sensors shot on glass and illuminated from above and below. These are CMOS sensors made by Omnivision.
Pasó de un día a otro, seguramente por cambiar el objetivo donde no debía... Ahora estoy intentando dejarlo lo más limpio posible, pero no es fácil.
It was a clear day and I had meant to do a dust/oil sensor check anyway, so f/16 + focus to infinity + point at the sky and here we are. Shutter actuation count is 3,585 so I'm above the anecdotal 3,000 shutter releases when the dust/oil problem is supposed to go away or be reduced.
There is visibly more dust on the sensor now than there was on the last check, although it's still not bad and mostly in the upper-left corner. I have been swapping lenses quite a bit lately, too. I might try to do a sensor clean soon.
Low light camera sensor from NTU Singapore.
Copyright gratefully acknowledged and belongs to original author
Selects of Foy Vance & Trevor Sensor performing at the Troubadour
Hollywood, CA
09/23/16
More Highlights:
These camera based sensors manufactured by Computer Recognition Systems Inc. are sprouting all over the Royal Borough. The provide supplemental data to the main CCTV system, a system that is shared between local government and the Police. The code on the label suggests that this part of the system belongs to Thames Valley Police.
I have concerns about this, as the system is likely to be disproportionately more effective and useful in tracking unintentional/minor breaches of the law where the number plates are likely to be genuine, for instance slightly exceeding the speed limit or having an incompetent insurer that fails to make timely updates to their database. It's useless against a bunch of violent robbers who have switched stolen cars twice as they flee the scene of the crime, before driving home in their own cars which probably have cloned plates anyway. I don't drive, I just don't like to see my tax money wasted!
Rockwell Automation Expands Sensor Offering with New Stainless Steel Sensors
Visit phx.corporate-ir.net/phoenix.zhtml?c=196186&p=irol-ne... to view full news
release text.
www.scmp.com/news/china/diplomacy/article/3210878/1000-we...
1,000 weather balloons take to the skies daily, UN agency says amid US-China ‘spy balloon’ row
▫️ Weather balloons released every day from 900 locations worldwide to help global real-time data gathering exercise, World Meteorological Organization says
▫️ Report comes as US-China ‘spy balloon’ spat continues, with top Chinese diplomat calling the US reaction ‘absurd and hysterical’
Around 1,000 weather balloons are released every day from 900 locations worldwide to provide crucial real-time data, the UN climate cooperation agency has said, as the “spy balloon” row roils US-China relations. “Free-rising latex balloons” are a key component of a vast global climate observation system, with their “valuable input” aiding the formulation of computer models to forecast weather and research climate processes, the World Meteorological Organization (WMO) said. However, the devices still provided just a tiny fraction of the “millions of observations gathered worldwide daily” by other devices under the Global Observing System, the WMO said in its report on Friday. The report came as Beijing and Washington continued to spar over the shooting down of a Chinese balloon off the US east coast earlier this month, with China’s top diplomat Wang Yi labelling the US reaction as “absurd and hysterical”.
The US claims the balloon was a Chinese high-altitude surveillance vehicle while China insists it was a civilian meteorological research craft that had been blown off course, and has accused the US of sending balloons into Chinese airspace more than 10 times since last year.
The WMO said weather balloons were fitted with battery-powered instruments to transmit data to ground receivers, and were released simultaneously every day from different places around the globe.
Such balloon flights usually last for around two hours, during which time they make weather measurements including pressure, wind velocity, temperature and humidity from above ground to heights of up to 35km (22 miles), according to the UN agency’s report. They could travel “many kilometres” before bursting and falling back to Earth under a parachute, it added.
However, the 1,000 or so balloons account for just a small percentage of the total observations gathered daily and offering vital information to climate monitors and forecasters, by devices including Earth or space-based instruments such as ships, aircraft and satellites. The “millions of observations” gathered every day included data from space by over 50 satellites, from the ocean by 400 moored buoys, 1,250 drifting buoys and 7,300 ships; by 4,000 aircraft from around 40 commercial aircraft companies, 7,300 ships and 10,000 automated and land-based observing stations, the report said. The US claimed the Chinese “spy balloon” shot down by its military was part of a global aerial surveillance programme run by China in more than 40 countries across five continents.
It later shot down three other unidentified flying objects in both American and Canadian airspace, but President Joe Biden said they were “most likely tied to private companies, recreation or research institutions”.
The search for debris from all four objects has been concluded, the US military said late last week. Remains from the balloon shot down on February 4 would be examined further, the Pentagon said, after “all of the priority sensor and electronics pieces”, including the balloon’s antennas, were located.
Recovery efforts for the other three were called off by US and Canadian authorities after they failed to locate any debris.
The top Chinese and US diplomats met on the sidelines of the Munich Security Conference over the weekend, the first face-to-face exchange between Wang and Secretary of State Antony Blinken since the balloon row worsened already tense relations. Washington was warned that it would “bear all the consequences” if it escalated the incident, the Chinese foreign ministry said in a statement on Saturday’s meeting, citing “the damage caused to China-US relations by the abuse of force”.
And while Blinken emphasised that the US was not looking for a “new cold war”, he said the balloon incursion was an “irresponsible act” and unacceptable violation of US sovereignty that “must never again occur”, according to State Department spokesman Ned Price. The meeting came hours after Wang, in a presentation at the annual security conference, slammed the US handling of the crisis as driven by “prejudice and ignorance”.
www.nature.com/articles/d41586-023-00482-7
High-altitude balloons: a scientists’ guide to what’s up there and why
The US has shot down four flying objects over fears of spy balloons. But what else are high-altitude balloons used for?
By far the majority are weather balloons: these are launched twice a day simultaneously from almost 900 locations worldwide, according to the US National Weather Service. They transmit data about temperature, humidity, pressure and location, and are disposable. The thin balloons — typically made of biodegradable latex — expand at altitude to about 6 metres in diameter. Flights are designed to go straight up to about 30 kilometres, and last for only a few hours.
Some scientists use much larger, longer-lasting balloons, for example to get a clear view of space, or to test instruments destined for high altitudes. NASA’s Wallops Flight Facility in Virginia manages the launch of about 10–15 scientific balloons each year worldwide. These can carry around 3,000 kilograms, expand to be larger than a football stadium and fly to an altitude of 37 kilometres.
Other balloon users include science students, companies and amateur enthusiasts. Jason Krueger says his company StratoStar in Fishers, Indiana, has helped students and companies to launch more than 1,000 high-altitude balloon missions since 2006. Student projects have included investigating whether Post-it notes are still sticky after a flight to near-space and the impacts of high-altitude radiation on blood samples.
Corporate uses of balloons include providing Wi-Fi in remote regions, and some amateur enthusiasts launch picoballoons. These silver-coloured, plastic Mylar balloons typically measure less than 1 metre in size and are harmless, says Krueger, carrying amateur radios and payloads of just a few grams. But these shiny balloons would “light up radar like nobody’s business”, says Krueger, and their typical flight altitude is around 12 kilometres.
Blame game
Many balloons can be discounted from the list of those shot down: weather balloons make short flights and don’t drift at 12-kilometre altitudes, for example. But that still leaves plenty unaccounted for worldwide. “There are flights every day of research, corporate and hobbyist balloons,” says Robert Rohde, a scientist at the environmental non-profit organization Berkeley Earth, who lives in Zurich, Switzerland. “I suspect that what they shot down are related to one of those categories.”
The US Federal Aviation Administration doesn’t require tracking devices for payloads under 5.4 kilograms, or for launches or flight paths for such loads to be declared. But even small packages can use large balloons. If such objects start to attract military attention, perhaps they, too, should be tracked, says Rohde. “I don’t feel like it’s necessary from a safety point of view, but if there’s a legitimate concern about small balloons from other states, we should probably make sure these things are identified.”
Krueger doesn’t think that’s needed. Instead, he says, the US government should “get better at assessing what is a threat”.
Rockwell Automation Expands Sensor Offering with New Stainless Steel Sensors
Visit phx.corporate-ir.net/phoenix.zhtml?c=196186&p=irol-ne... to view full news
release text.
Temperature sensor APR-CWF98.75KF4060FB210A
Application:for temperature measurement and control in food probe
Cost effective
Electronical characteristics:
R25:98.75Kohms
R85:10.129Kohms
B25/85:4060K
Dissipation coefficient:5mw/℃
Time constant:12 sec
Isolation resistance at 500Vdc:100Mohms
Operating temperature range:-30~+200℃
Three rate gyros, a 3-axis accelerometer and a 3-axis magnetometer (compass). The ultimate goal for my new KAP rig is to have a stabilized camera platform referenced to the local geo-spatial coordinate system.
Look out, I've got digital sensors and I'm not afraid to use them.
A sensor designed to detect a change in gait. Intended to help prevent the kind of falls that disable seniors and vastly increase healthcare costs.
The gauges are large, classic and easy to read (go figure) but the wheel is large and skinny. But isn't that part of the charm?
(Also try it on black.)
I recently had my sensor cleaned at Pro Photo Connection in Irvine
stores.prophotoirvine.com/StoreFront.bok
and wanted to checkity check the results, no spots here...
Nice work Gunther!
Pegado al riel, cumpliendo una silenciosa pero importante misión, un sensor de señal, detectando movimientos en la vía. Luego veremos que es lo que detectó este aparatito.
note sensor spots on right - the infamous D7000 oil splatter.
more appear with every shoot and the hurricane blower doesn't do squat to remove them. grrrrrrrrrr!!!!!!
Update 10/12: Using the Vdust sensor cleaners with some success.
Have used Vdust Plus and Smear Away kits. Vdust Plus removed most of the spots but two passes with Smear Away does a more effective job. The folks at Visible Dust recommend following up Smear Away with Vdust Plus in case Smear Away leaves any residual streaks but I haven't noticed any.
The oil spots keep reappearing and I have to repeat cleaning frequently. I recommend buying your sensor cleaners in bulk if you're having this problem!!! Doesn't look like Nikon has any intention of resolving this issue.