Aerial imagery for your Garmin automotive device, processed with the author’s special technique. Covers parts of New Jersey, New York, Delaware, Maryland, Pennsylvania, Connecticut and Rhode Island, including New York City, Long Island and Philadelphia.
Fully compatible with Garmin Basecamp on Windows and Macintosh, also works with Garmin’s older Mapsource software for Windows.
Original 2017 imagery from the USDA National Agriculture Imagery Program was exported at 96 feet per pixel with a custom 81 color palette. The map is a grid of 96 X 74 foot rectangles that match the pixel dimensions of the imagery. Each rectangle is assigned one of Garmin’s 81 polygon types to correspond with its palette color. The entire map contains more than 80 million of these small rectangles overlaid with roads and cities in standard Garmin format.
The 96 foot resolution and 81 color palette tend to limit the amount of detail that can be seen, but this map really pushes what is possible with Garmin’s traditional map format (which was never intended to support this kind of imagery).
This map works best on newer Garmin automotive devices. Older models should display it correctly but performance may be unacceptably slow. During testing, it worked best on the DriveSmart 61, a current premium model (originally introduced in 2017). Performance was also good on the Dezl 760 (a 2013 model). Screenshots from other devices are shown for reference, but they did not perform nearly as well.
Please see the documentation for more information on compatibility and performance. Although it should be compatible with newer Garmin handheld units, this map is primarily intended for automotive devices with large screens.
Even if the map doesn’t work well on your GPS, you may still find it useful in Basecamp on your computer. It should also be of interest to users of Garmin Mapsource, since this older software does not normally support aerial imagery.
This map is available as separate downloads for Windows and Macintosh computers. A third download for Linux users only includes the GPS map file itself (there is no Linux software available for using Garmin maps).
IMPORTANT NOTE: There are numerous reports that the current Windows version of Garmin’s software (Basecamp 4.7.0 and MapInstall 4.2.0 released in May 2018) cannot properly send maps from your computer to your GPS. The file transfer appears to complete properly, but the map does not work on the GPS. It is not clear whether the Macintosh versions have this same bug. The easiest fix for this problem is to download either the Windows or Macintosh version of the map if you want to use it on your computer. Then download the file-only version of the map for your GPS. This will give you a pre-compiled map that you simply copy to the GPS, thereby avoiding any use of MapInstall.
Update 7/27/2019: It’s now my understanding that the Basecamp/MapInstall issue described above only affects maps that were made in Garmin’s old registry format. These maps rely on the Windows registry and aren’t compatible with the Macintosh, but are still widely distributed on sites like GPSFileDepot.com. I stopped creating registry maps many years ago and have urged others to do so (with little success). Although I haven’t tested it, I suspect this map will work fine with any version of Basecamp/MapInstall on both Mac’s and PC’s.
Switching your device to Night Mode renders the map with a special high contrast pallete. Try Night Mode during the day; it can enhance detail.