Go Back  PPRuNe Forums > PPRuNe Social > Jet Blast
Reload this Page >

Ordnance Surveys - a tale of growing older?

Jet Blast Topics that don't fit the other forums. Rules of Engagement apply.

Ordnance Surveys - a tale of growing older?

Old 14th Mar 2021, 09:27
  #61 (permalink)  
 
Join Date: Oct 2009
Location: Australia
Posts: 782
Originally Posted by Mr Optimistic View Post
I bought a geological map for this area in the 80's. It was rather a waste of money as it was almost uniformly blue showing the surface geology was an expanse of glacial till and annoyingly my house was about 1mm off the bottom of the map. That seems to happen a lot, or the feature you're interested in is at a boundary.
All the best battles happen on the edge of the map.
Hydromet is offline  
Old 14th Mar 2021, 09:28
  #62 (permalink)  
 
Join Date: Jun 2002
Location: Saigon Vietnam
Posts: 5,940
Hydromet,

When I started my oil company career in Calgary in the 70s, I learned a new phrase - "gassing a map". To make areas of solid colour in a presentation map, a technical assistant would shade an area with a very waxy coloured pencil and then use a tissue dipped in "white gas" (naphtha) to rub the area to produce a uniform shade. A lost art these days now that colour plotters are so readily available and HSE rules would probably not allow open containers of gasoline in the office!

I also learned very quickly that I should use the term "eraser" rather than "rubber" when wanting to correct a mistake!
India Four Two is offline  
Old 15th Mar 2021, 13:39
  #63 (permalink)  
 
Join Date: May 2001
Location: south of Cirencester, north of Lyneham
Age: 75
Posts: 1,261
I wouldn't rush to dump paper maps in favour of GPS. Not after reading in the last but one issue of the IEEE Spectrum magazine of the problems in the US when the military are exercising jamming and spoofing to see how hard their systems are. On one occasion, an airliner on a scheduled flight was spoofed into heading for a mountain and it was only a wide awake ATC guy watching his radar that prevented an accident. Also in a previous issue where a demonstration of spoofing had a yacht stationary in the Adriatic claiming to be doing 900 mph underneath Italy and heading for Libya. An extreme case, done for demonstration....
radeng is offline  
Old 15th Mar 2021, 14:09
  #64 (permalink)  
 
Join Date: Jun 2009
Location: East Sussex
Posts: 289


Was this spoofing or a leak of the RAF's top secret upgrade to the Chinook


WB627 is offline  
Old 15th Mar 2021, 14:42
  #65 (permalink)  
 
Join Date: Oct 2002
Location: West Wiltshire, UK
Age: 69
Posts: 412
A few years ago there was a series of GPS spoofing trials held around the Salisbury Plain Training Area. They were NOTAM'd at the time, and went on for a fair time. The snag was that no-one seemed to think it was necessary to do anything other than stick out a NOTAM, so there were a lot of confused motorists driving along the A303, with their sat nav systems giving some pretty odd information. Mind you, this can happen without GPS spoofing. I've had a couple of cases now where my car has done a software update overnight, and when I've got in to drive it the next morning it's thought that it's been sat in Fremont, California. Usually takes 5 minutes or so before the GPS gets a lock and the map changes back to here.
VP959 is offline  
Old 15th Mar 2021, 14:56
  #66 (permalink)  
 
Join Date: Mar 2008
Location: London
Posts: 1,333
Originally Posted by Hokulea View Post
Sorry, treadigraph, but you have lost me on this one. I'm looking at at this:



Perhaps I'm being stupid, that's quite likely, but the only names I see are Walpan, Blackgang Chine and Blackgang, and have to admit I don't know anyone with those first names. I also see "Bay" and can imagine some giving that name to their child these days, but I think you have defeated me on this one! At a very real stretch are there a couple of signatures on the beach? Mike and Vrmmygrrm. There might be a Bill in the lower right hand corner.
I can see 'Mike' written in small letters on the NW portion of the cliff. I think his surname nmmmwmmwm...

Great thread BTW. I've got a stack of OS maps and still use them regularly. I'm trying to assemble the full set of 1:50000 maps for the UK.

It always fun to look at the old maps for areas you know, just to see how much has changed.

Last edited by dead_pan; 15th Mar 2021 at 15:26.
dead_pan is offline  
Old 15th Mar 2021, 15:09
  #67 (permalink)  
 
Join Date: Jun 2009
Location: East Sussex
Posts: 289
And another one that must have had his GPS spoofed today!!!


But my dad was never complimentary about the Canadians navigational abilities



WB627 is offline  
Old 15th Mar 2021, 15:22
  #68 (permalink)  
 
Join Date: Mar 2008
Location: London
Posts: 1,333
Originally Posted by WB627 View Post
And another one that must have had his GPS spoofed today!!!


But my dad was never complimentary about the Canadians navigational abilities
Seems legit to me - paradropping over Brize? They do do it from time-to-time, esp with the para display team.

PS Its still there according to Radarbox.
dead_pan is offline  
Old 15th Mar 2021, 15:31
  #69 (permalink)  
 
Join Date: Jun 2009
Location: East Sussex
Posts: 289
And they have to bring a Skyvan all the way over from Canada to do it? Cruise speed: 278 km/h (173 mph, 150 kn) econ cruise at 3,050 m (10,010 ft)

WB627 is offline  
Old 15th Mar 2021, 15:33
  #70 (permalink)  
 
Join Date: Oct 2002
Location: West Wiltshire, UK
Age: 69
Posts: 412
I thought it was just Brize turning away the Skyvan on the basis that it's far too ugly to be allowed to land . . .
VP959 is offline  
Old 15th Mar 2021, 16:32
  #71 (permalink)  
Gnome de PPRuNe
 
Join Date: Jan 2002
Location: Too close to Croydon for comfort
Age: 58
Posts: 9,833
The Canadian Skyvan has been para dropping at Weston-on-the-Green (?) for several years along with a New Zealand registered PAC 750 based up in the Midlands.
treadigraph is online now  
Old 16th Mar 2021, 09:37
  #72 (permalink)  

sua cuique voluptas
 
Join Date: Mar 2001
Location: Oxford, UK
Age: 76
Posts: 157
Side-by-side georeferenced mapping

https://maps.nls.uk/geo/explore/side-by-side/

I've spent many a happy hour on this site, mainly comparing historic/lost railways with the modern topography. IMHO, too good to not share with fellow map-lovers!

Ripline
Ripline is offline  
Old 16th Mar 2021, 13:18
  #73 (permalink)  
 
Join Date: Apr 2007
Location: Hawaii
Posts: 132
Originally Posted by Ripline View Post
https://maps.nls.uk/geo/explore/side-by-side/

I've spent many a happy hour on this site, mainly comparing historic/lost railways with the modern topography. IMHO, too good to not share with fellow map-lovers!

Ripline
Thank you so much for that. Utterly fascinating and captivating. I just spent the last hour looking at Easthampstead in Bracknell - it's where I grew up, and am only just moving onto other areas. This is a treasure trove, Ripline. Thank you again.

Last edited by Hokulea; 16th Mar 2021 at 13:35.
Hokulea is offline  
Old 16th Mar 2021, 14:27
  #74 (permalink)  
 
Join Date: Jun 2009
Location: East Sussex
Posts: 289
Ripline Brilliant thanks

WB627 is offline  
Old 16th Mar 2021, 17:24
  #75 (permalink)  
 
Join Date: Jul 2002
Location: The bar of the Frog and Peach
Posts: 77
All the best battles happen on the edge of the map.
There'll be an almighty battle in the Lake District one day then. You need four 50 thou maps to cover that area.
Carry0nLuggage is offline  
Old 16th Mar 2021, 17:59
  #76 (permalink)  
 
Join Date: Jan 2008
Location: There and here
Posts: 2,490
There'll be an almighty battle in the Lake District one day then. You need four 50 thou maps to cover that area.
Whilst I realise that cartographic institutions are commercial ventures (although some are govt owned) it does gall me when popular areas are manipulated to force customers to purchase several maps just to cover that relatively small area. Yes, they sell more maps, but probably alienate as many purchasers.
SpringHeeledJack is offline  
Old 16th Mar 2021, 18:25
  #77 (permalink)  
 
Join Date: Jan 2008
Location: Reading, UK
Posts: 13,923
Originally Posted by SpringHeeledJack View Post
Whilst I realise that cartographic institutions are commercial ventures (although some are govt owned) it does gall me when popular areas are manipulated to force customers to purchase several maps just to cover that relatively small area. Yes, they sell more maps, but probably alienate as many purchasers.
Well they have to draw the line somewhere, so to speak.

A little-known tip is that, if the centre of the area you're interested is in the corner of one of the regular Landranger sheets, you can get OS to make you a custom map of any 40 km x 40 km area, centred on your preferred point, for about the cost of a couple of regular maps.
DaveReidUK is online now  
Old 16th Mar 2021, 18:45
  #78 (permalink)  
 
Join Date: Jan 2008
Location: Reading, UK
Posts: 13,923
Originally Posted by WB627 View Post
And they have to bring a Skyvan all the way over from Canada to do it? Cruise speed: 278 km/h (173 mph, 150 kn) econ cruise at 3,050 m (10,010 ft)
The Skyvan, like its larger cousins the Shorts 330 and 360, is more economical at 15,000 feet with the heating and air conditioning turned off.

DAMHIKT.
DaveReidUK is online now  
Old 16th Mar 2021, 19:44
  #79 (permalink)  
 
Join Date: Nov 2000
Location: Pewsey, UK
Posts: 1,960
Originally Posted by DaveReidUK View Post
Well they have to draw the line somewhere, so to speak.

A little-known tip is that, if the centre of the area you're interested is in the corner of one of the regular Landranger sheets, you can get OS to make you a custom map of any 40 km x 40 km area, centred on your preferred point, for about the cost of a couple of regular maps.
Indeed. Pewsey is at the bottom of the Swindon/Marlborough map and over the north end of the Salisbury one. So I had a 1:50,000 made up with Pewsey in the middle which covers a large amount of the county so I can go biking the byways and bridleways round me. I should have had it made up with Pewsey not on a fold!
The Nr Fairy is offline  
Old 16th Mar 2021, 19:50
  #80 (permalink)  
 
Join Date: Jan 2015
Location: Coasting South
Age: 67
Posts: 70
Originally Posted by DaveReidUK View Post
Well they have to draw the line somewhere, so to speak.
Yes, usually every hundred feet ASL, they're called contours.
hiflymk3 is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.