Photometric

Long-term photometric measurements of Neptune show variations of brightness over half a century. ❋ Unknown (2007)

IP66 tightness level that guarantees that they will stay clean inside and deliver long-term photometric performance. ❋ Unknown (2010)

The group would be called the photometric task force, and would consist of Hogg, David Schlegel, and Doug Finkbeiner. ❋ Ann Finkbeiner (2010)

TIRUMALA: The newly introduced 'photometric' system using facial identification technology is a blessing for the ordinary devotees waiting in Sarvadarshan queue lines. ❋ Unknown (2010)

"The technique is known as photometric stereo and UWE's Machine Vision Laboratory are one of only three UK centres with expertise in this area. ❋ Unknown (2010)

Figure 8 shows the results of three al - ity to effects such as photometric nonlinearities and inter - gorithms (SSD with a 21 × 21 shiftable window, dynamic re fl ections. ❋ Guest4349de (2010)

Finally it would, in effect, tell the photometric pipeline that star X was really 0.00014 Vegas. ❋ Ann Finkbeiner (2010)

It was operating in fits and starts—parts of the telescope kept breaking, observers ran into problems, the weather was awful—but the data from the camera and spectrographs ran through the photometric and spectroscopic pipelines and out the other end. ❋ Ann Finkbeiner (2010)

So in August 1994, Jill became the photometric pipeline coordinator, and though she was no better or worse than any other astronomer at writing software, she thought Robert could do the pipeline pretty much by himself: “Robert is a difficult son of a bitch actually,” she said, “but unbelievably, oh my goodness, talented.” ❋ Ann Finkbeiner (2010)

And from night to night, the camera and telescope electronics change minutely, the mirror collects a little more dust, one CCD might have gotten a thousandth of a degree warmer—the upshot being that a twelfth-magnitude star in one stripe looks slightly brighter or dimmer than a twelfth-magnitude star on another stripe, that is, the stripes have different photometric zero points. ❋ Ann Finkbeiner (2010)

Jim—again, not on the pipeline team but worrying about his camera—felt so strongly about floating points that he wrote one of his e-mail screeds: “The photometric pipeline is, I think, the single most difficult computational job ever attempted in observational astronomy, and many much simpler jobs like it have failed.” ❋ Ann Finkbeiner (2010)

Nobody else seemed to be offering to do the job though, so Heidi Newberg volunteered to be the photometric pipeline coordinator and sent out e-mail to that effect. ❋ Ann Finkbeiner (2010)