Re: Camera Mirror Setup

[ABLE1 <someone@xxxxxxxxxxx>]

On 11/27/2017 6:50 PM, Jim Davis wrote:
> On Monday, November 27, 2017 at 9:20:40 AM UTC-5, ABLE1 wrote:
>> On 11/26/2017 8:50 PM, E D wrote:
>>   > Hi Les,
>>   >
>>   > The units that I used were TP-LINK AV2000 2-PORT gigabit pass-thru
>> Powerline starter kit. It uses the latest AV2 standard, allows 4k HD
>> streaming. It does claim up to 2000Mbps Powerline speed, about $90 or
>> so. MODEL # PA9020P KIT
>>   >
>>
>> Interesting!!  I tried a Trendnet product a number of years ago to
>> transmit Ethernet in a old house.  It failed.................
>> Units are on my "pile" as I type.
>> Maybe TP-LINK got it right.
>>
>>   > You mentioned that the light poles are all controlled by a photo-cell
>> and timer. Does that mean that each pole has its own photo-cell or are
>> they using one photo-cell for all the pole lights? Are the poles wired
>> one to another, or are they each home-run to a building box?
>>   >
>> All wiring for light poles returns to the Electrical Closet.  There is
>> one photocell that controls the pole lights through a relay that is
>> energized.  Not sure if there is a timer involved as well.  I originally
>> was looking at the project to use the poles thinking they had photocells
>> on each.  That was not to be once I talked to the electrician.
>>
>>   > Sorry if I digress, but is anyone actually going to view this camera
>> at night? I do not see how you could ever possibly get any quality
>> picture out of this setup at night.
>>   >
>> I agree no nighttime viewing.  Doesn't make sense.
>>
>>   > In regards to your questions about other issues I may foresee, I
>> think best to summarize it this way.
>>   >
>>   > ---The human eye can see up to 1000fps. The megapixel equivalent
>> numbers below refer to the spatial detail in an image that would be
>> required to show what the human eye could see when you view a scene. 90
>> degrees * 60 arc-minutes/degree * 1/0.3 * 90 * 60 * 1/0.3 = 324,000,000
>> pixels (324 megapixels). 120 * 120 * 60 * 60 / (0.3 * 0.3) = 576 megapixels.
>>   >
>>   > 1. You are reducing the natural pixel view of the roof scene with a
>> measurement of about 105' wide and with an angle of about 71 degrees
>> down to an area of the convex rectangular mirror which is 20" x 30" with
>> a viewing distance of 35 ft.
>>   >
>>   > 2. You are then using camera optics from 60' away to see that 4.2
>> square feet of view on the convex mirror and are re-amplifying digitally
>> for viewing to the dvr.
>>   >
>>   > 3. The mirror is not the quality that NASA uses, nor is it in the
>> vacuum of space. Meaning- spatial distortion highly probable, air
>> turbulence assured.
>>   >
>>   > It is kind of like a guy who is using 2 sets of binoculars taped end
>> to end, so that he first reduces the view and then re-enlarges it.
>>   >
>> That is a lot to digest, but I get it.
>>
>>   > I think that the concept will loose a greater amount of definition
>> that is presently anticipated. But, since there is a 30-day money back
>> return on that mirror, I would get it and do this in a controlled
>> environment at home  or shop, and see what I would get as a view on the
>> dvr with the camera that you are envisioning to purchase. I definitely
>> would not be trying this out onsite first.
>>   >
>> I agree, but doubt that I will test it.  The above gives me reason for
>> concern that it will be difficult to get it right.
>>
>>
>>   > If I was the owner, and I had been stuck paying for one or more
>> liability claim/lawsuit, I would gladly pay to rewire that pole. The
>> wiring is probably in pipe anyway. So who designed this roof anyway?
>> Must have been some Florida contractor who relocated to your area.
>>   >
>> I agree on the Florida connection, maybe.  Since we call those that
>> transplant to Florida "Snowbirds" then this guy would be called a
>> "Sunshiner" or "Sandflea" of something else??
>>
>>   > I'd love to see how it turns out for you.
>>   >
>> I will attempt to keep all in the loop.
>> Thanks for all the extra input.
>>
>> Have a good week.
>>
>> Les
>
> WOW!   FABULOUS THREAD !!!!!!!!!!!!
>
> BRAVO TO ALL !!!!!!!!!!!!
>

Thanks Jim,

It is always good to be ABLE to brainstorm with others
to resolve a challenge.

This 'GROUP' is N-O-T dead.

Les