Dr. Steven Alonzo's 3 Star Fix Algorithm on a Flat Earth

There’s no need for spherical trigonometry because the curvature of the Earth is not a factor.

The algorithm treats the sky as a flat plane, using basic geometry to calculate angles and positions. This simplifies the process significantly, as the complex adjustments required for a spherical Earth (such as dip corrections and great circle calculations) are not needed.

https://journalofgeocentriccosmology.org/2024/09/28/3-star-fix-algorithm-on-a-flat-earth-a-proof-of-concept/