Notes from the September 9, 2004 meeting of the Computer Interest Group (CIG) of the Rochester Genealogical Society (RGS).
The 132nd meeting of the CIG was held at 7:00 pm to 9:00 pm in the Auditorium of the Council Rock Elementary School at 600 Grosvenor Road in Brighton.
RGS VP/CIG Chairman Larry Lavery opened the meeting with the evening's agenda and visitor introductions.
7:00 - 7:45 • Introduction
7:00 - 7:45 • Welcome New Members & Visitors
7:00 - 7:45 • Business Meeting
7:00 - 7:45 • Tech Talk
7:45 - 8:00 • Break
8:00 - 8:50 • Feature Presentation - GPS
There were 31 attendees and 1 visitor.
CIG Program Topics
Thank you for completing the survey
Thanks to Program Committee: Gloria Church, Chuck Bliley, Jim Hall, Larry Naukam, and Larry Lavery
CIG Program Topics:
Search AlternativesPC Maintenance
Kodak Easy SharePhotoshop
NEMGS Site reviewOCR
Web site designGarage Sale/Q&A
Moving movies & tapes to CD/DVD
CIG meetings are 2nd Thursday of each month (September through June) except Nov 4, 2004 and May 6, 2005.
Jim Hall develops the monthly meeting notice for RGS and CIG. Paul Blake emails them and Jim posts them.
RGS budget deficit / Council Rock rental increasing.
We need to trim costs.
Email of notices will continue; postal mailings will stop.
Be sure Pat Mims has your email address!
NYS Library Research Trip
Date: Tuesday, November 9, 2004
Meet at Henrietta Plaza (Jefferson Rd. & East Henrietta Rd.)
Leave at 6 am return about 9:30 pm
Cost $30, minimum 30 participants
Sign up by September 16 th (RGS meeting)
Contact Bob Coomber: URL NOT shown here
Library website at www.nysl.nysed.gov
Archives website at www.archives.nysed.gov
October CIG Program
Thursday, October 14, 2004
"Family Tree Maker for the intermediate and advanced user"
Over half of the CIG members have FTM. Paul Blake will show us how to take advantage of the many features built into this common genealogy program.
RGS Meeting Reminder
Thursday, September 16, 2004
Mini-talk (7:00 pm):
"Introduction to Genealogical Research" by Jim Swarts
"Genealogical Resources of the New York State Library" by Vicki Weis
Free Web Site of the Month
Satellite photos of the US and some international locations
ZIP code (5 + 4)
Tech Talk Q&A
Any current problems
Solutions to share
After a short break, Larry Lavery began his presentation.
You'll never ask for directions again
Rochester Genealogical Society
September 9, 2004
Some mapping basics
What is GPS
Genealogy and other uses
How to shop for a GPS
Demo - GNIS website, street map software
Some Mapping Basics
A GPS places your position on a flat map
Mercator is one example of a map projection
map distortion causes errors
Latitude / Longitude is the default
UTM (Universe Transverse Mercator)
Map Datums - Mathematical models of the earth's shape
WGS-84 is the default
NAD-27 (most USGS maps)
What is the definition of Latitude and Longitude?
GPS... Global Positioning System
The Space Segment, consists of 24 operational satellites in six circular orbits 20,200 km (10,900 NM) above the earth at an inclination angle of 55 degrees with a 12 hour period. The satellites are spaced in orbit so that at any time a minimum of 6 satellites will be in view to users anywhere in the world. The satellites continuously broadcast position and time data to users throughout the world.
The Control Segment consists of a master control station in Colorado Springs, with five monitor stations and three ground antennas located throughout the world. The monitor stations track all GPS satellites in view and collect ranging information from the satellite broadcasts. The monitor stations send the information they collect from each of the satellites back to the master control station, which computes extremely precise satellite orbits. The information is then formatted into updated navigation messages for each satellite. The updated information is transmitted to each satellite via the ground antennas, which also transmit and receive satellite control and monitoring signals.
The User Segment consists of the receivers, processors, and antennas that allow land, sea, or airborne operators to receive the GPS satellite broadcasts and compute their precise position, velocity and time.
To locate the position of a GPS receiver on the Earth's surface in 2 dimensions (latitude & longitude):
the GPS receiver's antenna must be able to "see" 3 satellites.
To locate the position of a GPS receiver on the Earth's surface in 3 dimensions (latitude, longitude, & and elevation):
the GPS receiver's antenna must be able to "see" 4 satellites.
How accurate is a GPS
25 ground stations
2 geosynchronous satellites
Accurate within a circle of 10 ft radius
Accurate within a circle of 30 ft radius
Professional / Military
Accurate within a circle of X inches radius
What is a GPS good for?
Document or locate any position in the world
Grave sites, homesteads, etc.
Find the compass bearing and distance to any marked location.
What else is a GPS good for?
Clock - accurate to milliseconds
Speedometer - instantaneous & average
Estimated time of arrival
Recreation (geochaching) etc.
Handheld GPS Limitations
Antenna must be able to see satellites
Computation time is slow
Take an extra set of batteries
Don't depend on it to save your life... take a compass and map
(GNIS) Geographic Names Information System
GNIS, a US Government database
Free to use... you paid for it
Lists coordinates of cemeteries, schools, post offices and other points of interest for every county in the US. Doesn't list military sites unless historically significant.
Go to: http://geonames.usgs.gov
In the horizontal navigation bar toward the bottom of the page click on the 2nd item from the left:
US and territories
The next page appears. Its tittle is: "Query Form For The United States And Its Territories"
From the State or Territory: drop down menu, select "NY"
From the Feature: drop down menu, select "cemetery"
In the *County Name fill-in box, enter "Monroe"
Select "Send Query"
The next page appears. It is a list of 42 cemeteries in Monroe County, NY
The 15th item in this list shows the coordinates of Lakeside Cemetery in the town of Hamlin, Monroe County, NY
These coordinates are:
43° 21' 00" N and 077° 58' 31" W
Select "Lakeside Cemetery"
The next page appears. It shows the data for "Lakeside Cemetery".
The next page appears. In the gray area on the left side of the window:
Under "Map Size" change the size from "small" to "large".
Under "View Scale" change the scale from "1:50,000" to "1:000,000".
Under "View Scale" click "Update Map".
You should see a map of the "USGS Hamlin Quad" with a red "X" at the position of the Lakeside Cemetery.
Shopping for a GPS
WAAS (wide area augmentation system)
EGNOS (European version of WAAS)
Base map (2 to 16 MB of memory)
Waypoints (approx 500)
Map CD (StreetMaps, Topomap...)
SD memory (32 to 512 MB)
Shopping for a GPS
End of Meeting.
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