EGM2008 Geoid Model for STAR*NET

A copy of the EGM2008 geoid model, converted by MicroSurvey to the NGS .bin format compatible with the STAR*Geoid utility, is available for download.  This file provides Geoid separation information for the entire planet.

Click here for 2.5x2.5 minute resolution (142 MB).

Click here for 1x1 minute resolution (890 MB). Also available in BYN format.

 **Notice: Please use the BYN format file if working in the Eastern Hemisphere in STAR*NET 9**

Instructions for STAR*NET 7 (or earlier):

1. Download the file you need from the link above.

2. Save this file in:

Windows Vista/7/8 or newer:

C:\ProgramData\MicroSurvey\StarNet\Vn\Models

Windows XP or older:

C:\Documents and Settings\All Users\Application Data\MicroSurvey\StarNet\Vn\Models

3. Run the STAR*Geoid utility (installed with STAR*NET)

4. Identify the input folder by browsing to the location you have saved your .bin file.

5. Identify the output folder by browsing to the above Models or a location of your choice and create a name for your .ght file.

6. Select the "World" radio button in the Type section

7. Specify your region by entering the latitudes and longitudes to create a rectangle that covers your territory.  PLEASE NOTE that longitudes must be specified as a positive number east of Greenwich, and the longitude will range from zero to 359.5959.  You will only need to use this input convention when using STAR*Geoid.  Normally STAR*NET will expect positive longitudes to be west of Greenwich and between 0 and 180, and negative longtides to be east of Greenwich and between 0 and 180.

8. Optional: once you have created the .ght geoid file you can delete the .bin file to save space on your system.

9. Select the .ght file in your STAR*NET project's modeling options screen.

 

Instructions for STAR*NET 8 (or newer):

1. Download the file you need from the link above.

2. Save this file in:

Windows Vista/7/8 or newer:

C:\ProgramData\MicroSurvey\StarNet\V8\Mapping\

Windows XP or older:

C:\Documents and Settings\All Users\Application Data\MicroSurvey\StarNet\V8\Mapping\

3. Select the .bin file in your STAR*NET project's modeling options screen.