Re: Sky Quality Meter



Tony,

The sensor is on the (front) side with the display (which is off during
measurement, of course!)

You are no doubt aware that there is a trade-off between total signal
and solid angle. Indeed the cone half-angle of 40 degrees will weight
the reading off the zenith, but it is representative of a near-zenith
sky brightness. The actually weighting with altitude would make the
"effective altitude" closer to 60 degrees since the sensor response is
lower at angles farther from the zenith.

Cheers,
Doug Welch

.



Relevant Pages

  • Re: Low cost weight sensor ?
    ... weight cab be calculated. ... Have anyone used piezo electric material to ... How about placing a piezo disk under the paper stack with the piezo wired as ... a piezo sensor is a "change" sensor: ...
    (comp.arch.embedded)
  • Re: largish sensor P&S
    ... Size and weight may be the main reason ... fairly large sensor. ... It has a very high quality lens, ... Aren't low end DSLRs ...
    (rec.photo.digital)
  • Re: Olympus SLR boss says 12 MP is enough
    ... the cube of the sensor size. ... the 16 - 300mm range of lenses I use). ... But the Oly lens is twice the weight ...
    (rec.photo.digital)
  • Re: Olympus SLR boss says 12 MP is enough
    ... Volume and weight of lenses go up with the ... cube of the (linear) sensor size. ... I used to think that about the volume and weight relationship to sensor ...
    (rec.photo.digital)
  • Re: Prinzflex glassware
    ... I started with a Zenith B and hated it. ... this despite using a sensor that is more like APS than 35mm in size. ... sticking point is finding something good with a wideangle lens for my style ... All the compacts seem to use 10 or 14mm sensors ...
    (uk.rec.photo.misc)