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davidmorgan
Joined:
23-11-2006
Messages: 1620
from The New Forest
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|  New Message Posted!2011-12-31 06:56
For sunrise and sunset times I use this web based app from the National Oceanic & Atmospheric Administration
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h_fenton
Joined:
22-10-2005
Messages: 105
from OXFORDSHIRE, UK
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| New Message Posted!2011-12-30 18:15
the Photographers Ephemeris (uses google maps) is used to predict or look back at sun and moon rise/set positions and where it is at times in between. but it does not do the stars.
For use on pc it is free, otherversions for iPad/iPhone/iPod Touch and Android have to be paid for.
http://photoephemeris.com/
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tiompan
Joined:
09-01-2005
Messages: 2708
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| New Message Posted!2011-12-30 09:42
As a very basic test why not set it up for sun set as seen from your house tomorrow , if that works push it a bit more choosing a horizon that is a higher etc .
What will happen when it gets better is that there will be a huge volume of reports from GE ers just like archaeoastronomers have always done suggesting x alignment is only a few days off solstice etc . Great , democritisation of info and taking away some of the perceived "difficulty " of the subject . The real problem and difficulty is not finding alignments which are everywhere (if you look close enough i.e. local standing stone when aligned with prominent hill had Orion setting behind it on Xmas 1500 BC , should we tell the Bishop ?) but , intentionality , maybe there will be an app for that too .
George
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bawn79
Joined:
01-12-2005
Messages: 9
from Naas, Kildare/ Nenagh, Tipperary
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| New Message Posted!2011-12-29 22:49
Is there even a way that this can be done fairly roughly on Google Earth as a workaround? Just for purely spectulation until you go to site and observe?
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tiompan
Joined:
09-01-2005
Messages: 2708
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| New Message Posted!2011-12-29 19:17
Given that GE altitudes are inaccurate and we don't know the accuracy of the other components ,it may be wee while yet before we have that particular app working well enough to celebrate , but it's only a matter of time .
George
Quote:
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On 2011-12-29 14:55, bawn79 wrote:
Ive been looking at this, and it shows the position of the stars but doesnt really seem to show the actual sun setting or rising? Am I missing something because it would be an amazing tool of figuring out possible alignments from sites.
Thanks
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TimPrevett
Joined:
02-10-2012
Messages: 1193
from Cheshire / Manchester
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| New Message Posted!2011-12-29 19:03
Yup, exactly. Given I had cloud for every solstice alignment I wanted to check out this year, it's been a real pain!
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bawn79
Joined:
01-12-2005
Messages: 9
from Naas, Kildare/ Nenagh, Tipperary
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| New Message Posted!2011-12-29 14:55
Ive been looking at this, and it shows the position of the stars but doesnt really seem to show the actual sun setting or rising? Am I missing something because it would be an amazing tool of figuring out possible alignments from sites.
Thanks
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TimPrevett
Joined:
02-10-2012
Messages: 1193
from Cheshire / Manchester
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| New Message Posted!2011-12-08 09:11
OK dokey, Andy, I'll keep an eye out when I get my teeth into it next week. Cheers.
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Andy B
Joined:
13-02-2001
Messages: 7050
from Surrey, UK
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| New Message Posted!2011-12-07 21:35
Hello Tim, it's built into the latest versions of Google Earth. There's a time adjustment setting somewhere that you turn it on with.
Cheers
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TimPrevett
Joined:
02-10-2012
Messages: 1193
from Cheshire / Manchester
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| New Message Posted!2011-12-07 18:01
Hi folks
Anyone familiar with a google earth app which allows you to see sun, moon, stars locations et al from a given point on a given date?
Andy B mentioned it at the event at Dove Holes, but as I was giving a tour of the henge at the time, I missed it.
Need it for some research!
Cheers 
Tim
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