(meteorobs) OT- Map question.

[stange]

Thank you!

Between luminaries like yourself and the accomplished Jeff Brower of Canada, 
I should be able to align this huge 12 ft. sq. raised map on the wall much 
better for fireball placements in the future. Your memory is precisely the 
error I am noting using longitude.

YubaCitySentinel

----- Original Message ----- 
From: <darresmunds at comcast.net>
To: "Global Meteor Observing Forum" <meteorobs at meteorobs.org>
Sent: 2008/12/30 17:43
Subject: Re: (meteorobs) OT- Map question.


> Check online with the USGS, for declination maps. California is about 14.5 
> degrees e, if not mistaken!
>
> -------------- Original message -------------- 
> From: "stange" <stange34 at sbcglobal.net>
>
>> I have a 1965 raised relief map of California I use to estimate fireball
>> explosion positions. It is a Nystrom "Lambert Conformal Conic Projection" 
>> 1:
>> 1,000,000.
>>
>> My question is how close are the Longitude lines in (alignment) to TRUE
>> NORTH ?
>>
>> Latitude or elevation is not an issue. Thank you.
>>
>> (I have had varying answers from Nystrom, who suggested aligning the 
>> map(?)
>> with a compass, then rotate the map CCW 16 degrees ). There are no 
>> magnetic
>> declination reference marks on this map. Just latitude and longitude.
>>
>> Larry
>> YCSentinel
>>
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