Google mash-up I'd like to see

On Dec 15, 10:06 am, Don Wiss <donwiss DeleteThis @no_spam.com> wrote:
> I'd like to see someone create a Google mash-up that tells me when the sun
> is in the direction I want. On the map you would put two points. One for
> where you would be standing. The second would be off in the direction you
> want to be looking. Then you would input a date. The program would return
> the time on that date that the sun would be directly behind you.
>
> Don <www.donwiss.com/pictures/> (e-mail link at page bottoms).

As Charles indirectly pointed out, standard Alt/Az (Altitude/Azimuth)
figures would give you this information, with very little effort.
Most astronomy programs do this very easily/quickly, and allow you to
go way back/ way forward. Try Winstars for a good freebie (actually
it's shareware nowadays, but I don't think it is crippled or time
limited) - there are many others.
 >> Stay informed about: Google mash-up I'd like to see 

On Fri, 14 Dec 2007 19:06:49 -0500, Don Wiss <donwiss.DeleteThis@no_spam.com>
wrote:

>I'd like to see someone create a Google mash-up that tells me when the sun
>is in the direction I want. On the map you would put two points. One for
>where you would be standing. The second would be off in the direction you
>want to be looking. Then you would input a date. The program would return
>the time on that date that the sun would be directly behind you.
>
>Don <www.donwiss.com/pictures/> (e-mail link at page bottoms).

Not quite what you are asking for, but you may get some use from this
page.

http://aa.usno.navy.mil/data/docs/AltAz.php
 >> Stay informed about: Google mash-up I'd like to see 

"Don Wiss" <donwiss RemoveThis @no_spam.com> wrote in message
news:qi66m3p86cg7rc3rua3shis1po948fovuc@4ax.com...
> I'd like to see someone create a Google mash-up that tells me when the sun
> is in the direction I want. On the map you would put two points. One for
> where you would be standing. The second would be off in the direction you
> want to be looking. Then you would input a date. The program would return
> the time on that date that the sun would be directly behind you.

In order to do this accurately you'd also have to consider longitude. For
example, if you were near the eastern edge of your time zone the correct
answer would be almost an hour different from what it would be near the
western edge.

Neil
 >> Stay informed about: Google mash-up I'd like to see 

Don Wiss wrote:

> I'd like to see someone create a Google mash-up that tells me when
> the sun is in the direction I want. On the map you would put two
> points. One for where you would be standing. The second would be off
> in the direction you want to be looking. Then you would input a
> date. The program would return the time on that date that the sun
> would be directly behind you.
>
> Don <www.donwiss.com/pictures/> (e-mail link at page bottoms).
Use a compass and a watch.


--
Neil
reverse ra and delete l
Linux user 335851
 >> Stay informed about: Google mash-up I'd like to see 

Neil Ellwood <cral.elllwood.TakeThisOut@btinternet.com> wrote:

>Don Wiss wrote:
>
>> I'd like to see someone create a Google mash-up that tells me when
>> the sun is in the direction I want. On the map you would put two
>> points. One for where you would be standing. The second would be off
>> in the direction you want to be looking. Then you would input a
>> date. The program would return the time on that date that the sun
>> would be directly behind you.
>>
>> Don <www.donwiss.com/pictures/> (e-mail link at page bottoms).
>Use a compass and a watch.


Learn to use your watch as a compass, and a watch is all you need.

It is all I need, and it gets plenty of use.

Recommendation - avoid digital watches for this application.
 >> Stay informed about: Google mash-up I'd like to see 

On Sat, 15 Dec 2007, The Good Doctor <nospam DeleteThis @googlemail.com> wrote:

>Neil Ellwood <cral.elllwood DeleteThis @btinternet.com> wrote:
>
>>Don Wiss wrote:
>>
>>> I'd like to see someone create a Google mash-up that tells me when
>>> the sun is in the direction I want. On the map you would put two
>>> points. One for where you would be standing. The second would be off
>>> in the direction you want to be looking. Then you would input a
>>> date. The program would return the time on that date that the sun
>>> would be directly behind you.
>>>
>>Use a compass and a watch.
>
>Learn to use your watch as a compass, and a watch is all you need.
>It is all I need, and it gets plenty of use.

I'm sorry but I don't follow. How can that tell me at what time I should go
visit a site to take a picture with the sun exactly in the direction I want
it to be?

Don <www.donwiss.com> (e-mail link at home page bottom).
 >> Stay informed about: Google mash-up I'd like to see 

On Fri, 14 Dec 2007 19:06:49 -0500, Don Wiss wrote:

> I'd like to see someone create a Google mash-up that tells me when the sun
> is in the direction I want. On the map you would put two points. One for
> where you would be standing. The second would be off in the direction you
> want to be looking. Then you would input a date. The program would return
> the time on that date that the sun would be directly behind you.

I don't think so. Pick a spot to stand. Any location. Have two
directions that you want to look at, 180 degrees apart. At some
fleeting instant during the day the sun will be aligned properly for
one of those two directions. It won't be for the other direction,
which for you may be more southerly. Taking that constraint into
consideration though, I guess that some math whiz of an astronomer
could probably work out a formula for you. How accurate does this
need to be, though? With the two known points you could determine
the direction, and it probably wouldn't be too difficult to make a
very rough mental estimate (no math required if you can visualize it
based on where in the sky the sun would need to be) of what the time
should be, within a couple of hours or so.

Or you could cheat a bit by packing your bags, taking your camera,
and flying down to some location near the equator. You'd pretty
much know the two directions that you could look towards, and the
moments of alignment wouldn't be very fleeting at all.
 >> Stay informed about: Google mash-up I'd like to see 

On Sat, 15 Dec 2007 00:52:03 GMT, Craig wrote:

> There is a program that will let you do something like this. It is
> called Stellarium. It is a planetarium program that shows a
> photorealistic view of the sky from teh ground. You choose your
> location from a map,or by putting in latitude and longitude, then
> select the time and date.
>
> Then you see where the sun is. You can look in any direction even up
> and see where teh sun is.
>
> Stellarium.org to download it. It's free.

Thanks. I found it at http://www.stellarium.org/ and then
discovered and older version on the computer that I'd forgotten
about.
 >> Stay informed about: Google mash-up I'd like to see 

I was thinking this too, but with all the talk about astronomy, etc. I was
put off from posting something so simplistic.



"Neil Ellwood" <cral.elllwood.RemoveThis@btinternet.com> wrote in message
news:wemdnYDW5cLcPP7anZ2dnUVZ8qLinZ2d@bt.com...

> Use a compass and a watch.
 >> Stay informed about: Google mash-up I'd like to see 

On Fri, 14 Dec 2007 19:06:49 -0500, Don Wiss <donwiss DeleteThis @no_spam.com>
wrote:

>I'd like to see someone create a Google mash-up that tells me when the sun
>is in the direction I want. On the map you would put two points. One for
>where you would be standing. The second would be off in the direction you
>want to be looking. Then you would input a date. The program would return
>the time on that date that the sun would be directly behind you.

Hi,

As well as desktop/online apps, another great app is something called
"Ephemeris" that runs on PocketPC machines. It provides Sun and moon
directions, etc. You will need to enter your town/city so it can work
things out for your location:

http://home.comcast.net/~jonsachs/#Ephemeris%201.0

In addition, the software author has another piece of PocketPC
software called DOF that can calculate Depth Of Field:

http://home.comcast.net/~jonsachs/#DOF%201.0

And another for exposure calculations (most useful for film I
assume):

http://home.comcast.net/~jonsachs/#Expose%201.0

I use Ephemeris quite a bit on my Windows Mobile 6 device which has
GPS and maps for orientation, etc.

--
Kulvinder Singh Matharu

Website : www.metalvortex.com
Contact : www.metalvortex.com/contact/

Brain! Brain! What is brain?!
 >> Stay informed about: Google mash-up I'd like to see 

Maybe I am being a bit to simplistic, but I would look where the Sun comes
up and where it sets. If I am wrong, please feel free to shed some light
(no pun intended).


"Don Wiss" <donwiss.TakeThisOut@no_spam.com> wrote in message
news:4pg7m3tjt0ngco4j1ko0f5umkuv65q6nsp@4ax.com...

>>Learn to use your watch as a compass, and a watch is all you need.
>>It is all I need, and it gets plenty of use.


> I'm sorry but I don't follow. How can that tell me at what time I should
> go
> visit a site to take a picture with the sun exactly in the direction I
> want
> it to be?
 >> Stay informed about: Google mash-up I'd like to see 

Don Wiss wrote:
> I'd like to see someone create a Google mash-up that tells me when the sun
> is in the direction I want. On the map you would put two points. One for
> where you would be standing. The second would be off in the direction you
> want to be looking. Then you would input a date. The program would return
> the time on that date that the sun would be directly behind you.

Last time I did something like this it was for considering passive solar
building design, that might help you google up a solution.
 >> Stay informed about: Google mash-up I'd like to see 

I also found this:
http://www.warehouseexpress.com/?/photo/depssi/depssi.html



"Ali" <me DeleteThis @privacy.net> wrote in message
news:t9KdnaqhJ-15uPnanZ2dnUVZ8vqdnZ2d@pipex.net...

>I was thinking this too, but with all the talk about astronomy, etc. I was
>put off from posting something so simplistic.


> "Neil Ellwood" <cral.elllwood DeleteThis @btinternet.com> wrote in message

>> Use a compass and a watch.
 >> Stay informed about: Google mash-up I'd like to see