![OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System](https://geodesy.noaa.gov/sitemsgs/OPUS/about/images/OPUS-concept_small.png)
OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System
![OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System](https://geodesy.noaa.gov/OPUS/images/DG.jpg)
OPUS: the Online Positioning User Service, process your GNSS data in the National Spatial Reference System
![Opus (mona Lisa) By Nefesch (gimmick+online Instruct) - Card Magic Trick,close Up,street Magic,illusions,mentalism,fun - Magic Tricks - AliExpress Opus (mona Lisa) By Nefesch (gimmick+online Instruct) - Card Magic Trick,close Up,street Magic,illusions,mentalism,fun - Magic Tricks - AliExpress](https://ae01.alicdn.com/kf/H571ec9cfae0a4458a13852a65b1012d8i/Opus-Mona-Lisa-By-Nefesch-Gimmick-Online-Instruct-Card-Magic-Trick-Close-Up-Street-Magic-Illusions.jpg_Q90.jpg_.webp)
Opus (mona Lisa) By Nefesch (gimmick+online Instruct) - Card Magic Trick,close Up,street Magic,illusions,mentalism,fun - Magic Tricks - AliExpress
![January 2018 - OPUS is Shutdown, C4Gnet.XYZ And Other Comparable Online Post-Processing Service Are Still Available January 2018 - OPUS is Shutdown, C4Gnet.XYZ And Other Comparable Online Post-Processing Service Are Still Available](https://c4g.lsu.edu/images/NOAA-Shutdown.png)