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Thread: How far can you see on a clear day.

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    How far can you see on a clear day.

    We have here a photo of Alisa Craig, to the far right of the photo is the Isle of Arran, to the left is the Mull of Kintyre and to the far left you can just make out Northern Ireland about 50 or so miles away, it really was a clear day with no sea fog over the channel.




  2. #2
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    I can see small specs of light in the sky at night.

    Probably distant stars,and I bet they are a fair few miles away.

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    Quote Originally Posted by P9CLY View Post
    I can see small specs of light in the sky at night.

    Probably distant stars,and I bet they are a fair few miles away.
    I'd check that it's not just an old sneeze that has congealed on your window.

  4. #4
    Hey, I can see my house from here.

  5. #5
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    Surprising. I would have thought it would be under the horizon at that distance.

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    Quote Originally Posted by SimonH View Post
    Surprising. I would have thought it would be under the horizon at that distance.
    I took the photo from a fairly high vantage point, so that might explain it.

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    I can see the isle of Sheppey. I'd rather not though.

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    Quote Originally Posted by KurtKlaus View Post
    I can see the isle of Sheppey. I'd rather not though.
    I'm sorry to say that I don't know where that is.

  9. #9
    Quote Originally Posted by Captainhowdy View Post
    I'm sorry to say that I don't know where that is.
    Keep it that way.

    R
    Ignorance breeds Fear. Fear breeds Hatred. Hatred breeds Ignorance. Break the chain.

  10. #10
    Master vRSG60's Avatar
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    Sea level about 30 miles. Further depending on your altitude.

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    About 93,000,000 miles.

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    There is a viewing table outside Sheffield at an elevation of 360 m/1200ft. On a clear day looking east you can see Lincoln Cathedral and the Humber Bridge (43 and 52 miles). Ideal conditions don't occur too often...Autumn mornings can be ideal. From the top of Kinder Scout in the Peak (600m), people have taken pictures of Snowdon with a long lens camera, which is more than 90 miles away across the Cheshire plains.

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    Grand Master GraniteQuarry's Avatar
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    If I climb the tree in the garden I can see the nubile 18 year old next door in the shower.

    Oh, wait!

  14. #14
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    In my old office in Canary Wharf you could see the Crystal Palace transmitter, telling visiting septics that it was the Eiffel Tower never, ever got old ;)

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    Grand Master Foxy100's Avatar
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    I can see the house in front of me and the house behind me. From the front garden I can see PhilipK's blueberry tree.
    "A man of little significance"

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    Grand Master markrlondon's Avatar
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    Quote Originally Posted by Captain Morgan View Post
    In my old office in Canary Wharf you could see the Crystal Palace transmitter, telling visiting septics that it was the Eiffel Tower never, ever got old ;)
    How many believed you?

  17. #17
    Grand Master markrlondon's Avatar
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    I've posted this before but I like it and it's relevant, so here goes again...

    The view from Parliament Hill (Hampstead Heath). What I especially like about it is the fact that you can see the Queen Elizabeth II suspension bridge at the very far left (east) when zoomed in, which I would have never have expected. The view over central London has changed a bit (new tall buildings) since this picture was taken too.

    Also, if you look very carefully, Nelson's Column is visible in this panorama.

    Click on pic for full size version. Probably best to download the full size version and view it in your local image browser.


    (This image was made by someone who uploaded it to Wikipedia; it is not mine)


    If I can remember over the winter, I'll go up to Parliament Hill and take an up to date version of this photo.


    Wikipedia:-
    QEII bridge
    Littlebrook Power Station (visible near the bridge)
    Parliament Hill
    Last edited by markrlondon; 29th November 2013 at 08:20.

  18. #18
    Grand Master thieuster's Avatar
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    A few years back, I attended a metro training as a part of the Dutch yacht master title.

    The guy in front of the class told us that genus cumulonimbus clouds - the ones that produce thunderstorms (with the 'anvil' top) can be several miles high. In fact: when standing on the North Sea beach of Holland, looking west, you can see these clouds above Ireland! That's about 200kms west!

    Menno




  19. #19
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    Quote Originally Posted by markrlondon View Post
    How many believed you?
    Perhaps this won't be a great shock but we had a high success rate with younger less well travelled folk, those that had been in London for a while or had done some travel were harder to crack.

  20. #20
    Grand Master markrlondon's Avatar
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    Quote Originally Posted by Captain Morgan View Post
    Perhaps this won't be a great shock but we had a high success rate with younger less well travelled folk, those that had been in London for a while or had done some travel were harder to crack.
    :-)

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    Quote Originally Posted by ralphy View Post
    Keep it that way.

    R
    Indeed :)

    I live in Whitstable, which isn't bad. But the Isle of Sheppey is grim.

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    Quote Originally Posted by SimonH View Post
    Surprising. I would have thought it would be under the horizon at that distance.
    Good point, reminds me of a little physic story:
    Lake Constace is 80 km/50 miles long, the curve of the earth requires that if you view from one end of the lake to the other, an object needs to be at least 180 meter heigh, in order to become visible at the horizon line.
    Last edited by bmwrover; 29th November 2013 at 12:41. Reason: wrong number stated

  23. #23
    Master gunner's Avatar
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    I can easily see various city/canary wharf buildings from my house about 20miles away.

    Regularly see France when down on the coast.

  24. #24
    Clear day = Scotland, England, Wales and Ireland for me ;)
    It's just a matter of time...

  25. #25
    Master MerlinShepherd's Avatar
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    Well my eyes are clearly better than most because I can actually see Paul McCartney strumming and singing that bloody awful song in the OP's pic...

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    Quote Originally Posted by Omegamanic View Post
    Clear day = Scotland, England, Wales and Ireland for me ;)
    Same here, when I worked on Marchlyn Mawr storage reservoir, the view on a clear day (which wasn't often) ranged from the Wicklow hills to Dumfries and Galloway with Anglesey and the Isle of Man in between.
    Mind you we were at 2000 ft.

  27. #27
    I thought I was doing well to see the Isle of Wight - from Bournemouth.

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    Master markc's Avatar
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    On a clear NIGHT it is possible to see 2.5 million light years (Andromeda Galaxy).

    That is (apparently) the furthest object (or collection of objects) visible without aid.

    Cheers,

  29. #29
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    Quote Originally Posted by Foxy100 View Post
    I can see the house in front of me and the house behind me. From the front garden I can see PhilipK's blueberry tree.
    Can you also make out the bluebells in the hanging baskets?

  30. #30
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    For me, Devon and Lundy...

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    Quote Originally Posted by Captainhowdy View Post
    We have here a photo of Alisa Craig, to the far right of the photo is the Isle of Arran, to the left is the Mull of Kintyre and to the far left you can just make out Northern Ireland about 50 or so miles away, it really was a clear day with no sea fog over the channel.



    I used to stare out at this when I was at Dundonald camp. The pirate station Radio Scotland was just offshore there.

    Eddie
    Whole chunks of my life come under the heading "it seemed like a good idea at the time".

  32. #32
    Grand Master PickleB's Avatar
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    Distance to the horizon: link.

    Quote Originally Posted by vRSG60 View Post
    Sea level about 30 miles. Further depending on your altitude.
    You'll need to be pretty high up to see something at that distance, or it'll need to be pretty tall itself: link. When I'm sailing in a yacht I usually assume the horizon is about 3 nautical miles away, and that I can only expect to see the superstructure of big ships and high land beyond that.

    Visibility is another matter...

  33. #33
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    Quote Originally Posted by Captainhowdy View Post
    I took the photo from a fairly high vantage point, so that might explain it.
    You are not that high there. This is the southwest coast of Scotland. I would guess somewhere between Ayr and Girvine but not as far a Culzean?
    Maybe somewhere close to Dunure.

    Born and bred from here ; plan on retiring to Arran in about 20 years or so.

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    Is anyone familiar with the satirical rock group 'Bad News'?
    I won't quote them as that would bring down the tone, but this reminds me of one of their quotes

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    Journeyman stevoknevo's Avatar
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    This was taken at our old house last year; Isle of Gigha to the left, Antrim in the middlle and Rathlin Island to the right. About 45 miles to the furthest point.


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    Quote Originally Posted by Mr.D View Post
    You are not that high there. This is the southwest coast of Scotland. I would guess somewhere between Ayr and Girvine but not as far a Culzean?
    Maybe somewhere close to Dunure.

    Born and bred from here ; plan on retiring to Arran in about 20 years or so.

    It's quite a bit further south than Ayr, just south of Lendalfoot on the higher ground on the way to Cairnryan

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    Quote Originally Posted by Omegamanic View Post
    Clear day = Scotland, England, Wales and Ireland for me ;)
    Seven Kingdoms visible from Snaefell if I remember correctly?

  40. #40
    Master Lammylee's Avatar
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    I was in Oldham the other day and could see Liverpool cathedral 53 miles away.

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    Quote Originally Posted by Lammylee View Post
    I was in Oldham the other day and could see Liverpool cathedral 53 miles away.
    I would have thought you were about 10 miles out on that one Lammylee. Or maybe it's 53 miles there and 45 miles back.

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    Quote Originally Posted by unclealec View Post

    I would have thought you were about 10 miles out on that one Lammylee. Or maybe it's 53 miles there and 45 miles back.
    My mistake Alec,I googled the distance, so the figure is how the van flys, rather than the crow! ;-)

  43. #43
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    Sorry to be so pedantic Lammylee - it's not like me, I'm lovely really.
    I used to work close to St. Readymix, and live in north Manchester, so as I was on mileage the distances are etched large on my expense account.

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    Quote Originally Posted by unclealec View Post
    Sorry to be so pedantic Lammylee - it's not like me, I'm lovely really.
    I used to work close to St. Readymix, and live in north Manchester, so as I was on mileage the distances are etched large on my expense account.
    So 106 miles then

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    Master pacifichrono's Avatar
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    I live on a 1,000-foot hill in San Diego, noted on the map below by a red splotch. As you can see, the two closest islands to the west and northwest are about 85 miles away. On a clear day, I can see the entire outline of each island standing above the ocean horizon. They are even visible here at about 800 feet of elevation.


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    Grand Master markrlondon's Avatar
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    Quote Originally Posted by pacifichrono View Post
    I live on a 1,000-foot hill in San Diego, noted on the map below by a red splotch. As you can see, the two closest islands to the west and northwest are about 85 miles away. On a clear day, I can see the entire outline of each island standing above the ocean horizon. They are even visible here at about 800 feet of elevation.
    Most interesting. For some reason, I find what you can see from a distance really intriguing.

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    Craftsman xenon's Avatar
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    Pylons, fields, pylons.

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    Master aldfort's Avatar
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    Fascinating.

    I think at sea level a man standing on the shoreline can see about 2.5-3 miles. That is there his horizon would be. If the object being viewed is above sea level clearly you would be able to see it further away and the taller it was the further away you'd be able to see it. Similarly if you increase your own elevation you can see things at grater distance. Probably one reason why the crows nest was set so high up on old sailing ships.

  50. #50
    Grand Master thieuster's Avatar
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    Quote Originally Posted by aldfort View Post
    Fascinating.

    I think at sea level a man standing on the shoreline can see about 2.5-3 miles. That is there his horizon would be. If the object being viewed is above sea level clearly you would be able to see it further away and the taller it was the further away you'd be able to see it. Similarly if you increase your own elevation you can see things at grater distance. Probably one reason why the crows nest was set so high up on old sailing ships.
    This is what I found: first column: hight from the ground, second: how far you can see

    0.0 m 0.0 m
    1.0 cm 370 m
    10 cm 1.2 km
    20 cm 1.7 km
    30 cm 2.0 km
    40 cm 2.3 km
    50 cm 2.6 km
    60 cm 2.9 km
    70 cm 3.1 km
    80 cm 3.3 km
    90 cm 3.5 km
    1.0 m 3.7 km
    1.1 m 3.9 km
    1.2 m 4.1 km
    1.3 m 4.2 km
    1.4 m 4.4 km
    1.5 m 4.5 km
    1.6 m 4.7 km
    1.7 m 4.8 km
    1.8 m 5.0 km
    1.9 m 5.1 km
    2.0 m 5.3 km
    2.1 m 5.4 km
    2.2 m 5.5 km
    2.3 m 5.6 km
    2.4 m 5.8 km
    2.5 m 5.9 km
    3.0 m 6.4 km
    3.5 m 6.9 km
    4.0 m 7.4 km
    4.5 m 7.9 km
    5.0 m 8.3 km
    6.0 m 9.1 km
    7.0 m 9.8 km
    8.0 m 11 km
    9.0 m 11 km
    10 m 12 km
    11 m 12 km
    12 m 13 km
    13 m 13 km
    14 m 14 km
    15 m 14 km
    20 m 17 km
    25 m 19 km
    30 m 20 km
    35 m 22 km
    40 m 23 km
    45 m 25 km
    50 m 26 km
    60 m 29 km
    70 m 31 km
    80 m 33 km
    90 m 35 km
    100 m 37 km
    110 m 39 km
    120 m 41 km
    130 m 42 km
    140 m 44 km
    150 m 45 km
    200 m 53 km
    250 m 59 km
    300 m 64 km
    350 m 69 km
    400 m 74 km
    500 m 83 km
    600 m 91 km
    700 m 98 km
    800 m 110 km
    900 m 110 km
    1.0 km 120 km
    1.5 km 140 km
    2.0 km 170 km
    2.5 km 190 km
    3.0 km 200 km
    3.5 km 220 km
    4.0 km 230 km
    4.5 km 250 km
    5.0 km 260 km
    6.0 km 290 km
    7.0 km 310 km
    8.0 km 330 km
    9.0 km 350 km
    10 km 370 km
    11 km 390 km
    12 km 410 km
    13 km 420 km
    14 km 440 km
    15 km 460 km
    20 km 530 km
    25 km 590 km
    30 km 640 km
    35 km 700 km
    40 km 740 km
    45 km 790 km
    50 km 830 km
    60 km 910 km
    70 km 990 km
    80 km 1100 km
    90 km 1100 km
    100 km 1200 km
    And I found this: http://mintaka.sdsu.edu/GF/explain/a...r/horizon.html
    Last edited by thieuster; 1st December 2013 at 17:15.

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