Re: Remote Sensing
Mustafa,
Your use of multispectral imaging is a good idea for archeology. First, I
suggest you read a book or two on remote sensing. See, for example, Remote
Sensing: Principles and Interpretations by Floyd F. Sabins. He was involved
in design of the first multispectral imaging system on Landsat while working
for Chevron Research and I had a class from him as an undergrad (I'm a
hydrogeologist).
You can't use photographic techniques for thermal IR. Thermal imaging
requires a special theromographic camera (Google "thermal IR imaging").
The thermal cameras are sensitive to longer wavelengths than photographic
sensors or IR film.
You can use photographic IR with black & white or color IR film plus
filters, or a converted digital camera (check out the Fuji IS-1). You can
purchase IR filters from Hoya, B+W, and other manufacturers. Photo IR has
typically been used to look for stressed vegetation, which may be used as an
archeological indicator.
Regarding the blue, green, and red filters on Landsat--the multispectral
scanner was a black & white camera; the filters were used for making
composite color images.
One other thought, you might want to try purchasing images or digital files
from the USGS or other vendors of satellite images to take a first-cut look
at the area you are interested in. Resolution today is much improved over
what was available 30 years ago, so you may get some useful information from
readily available sources.
Glen Wyatt
From: Yves Gauvreau <gauvreau-yves@cgocable.ca>
Reply-To: alt-photo-process-l@usask.ca
To: alt-photo-process-l@usask.ca
Subject: Re: Remote Sensing
Date: Mon, 11 Aug 2008 07:46:30 -0400
Mustafa,
I just saw Nova science now yesterday and it sowed how they used satellite
images to discover new Mayen archeological site. The accuracy was nearly
perfect from what I could see.
But before you jump to any conclusions, you need to know that all Mayen
site where build in limestone and it would seem that the dissolution of
limestone affect surrounding vegetation in a detectable manner. This is
most likely not the exact same case with different construction materials
and different surrounding. I assume you would need to study similar known
constructions and their effect on similar surrounding to those you are
looking for before anything else.
Regards,
Yves
----- Original Message -----
From: Mustafa Umut Sarac
To: alt-photo-process-l@usask.ca
Sent: Monday, August 11, 2008 3:28 AM
Subject: Remote Sensing
Hi List ,
I am an archeologist and want to take multispectral pictures of plains
with the hope of finding underground remainings of Hittite Kings Tombs.
And I want to give a gift to my vineyard owner friend for to follow
vegetation health of his plants.
Another idea is to hoping to see the inside heat of the Achilles Tumulus
near Troy in Turkey.
Etc Etc
I want to do this with taking many same area picture with different
narrow band filters.and merge together with false colors
I got a list from the Landsat Satellite sensor and I learned that I need
green , yellow and red filters .
And I need many diffrent IR filters.
Astrophotographers uses many different filters but they are specialised
on deep sky or removing light pollution.
Who produces filters special for remote sensing ?
And I need to take different band IR photography . I need many IR
filters .
Who produces them ?
Best ,
Mustafa Umut Sarac
Istanbul