The results from the calculations using the Heliocentric 3D-Model are then projected onto the Flat Earth and the Dome.
Translation: both globe-earth and flat-earth are supported by the same calculations.
It would be just as valid to say that the calculations from the Flat Earth model were projected onto a Heliocentric Globe one.
To optically connect a Flat Earth Observer with Celestial Objects on the Dome, visible from his location at the right Azimuth and Elevation, light has to bend in ways, which can not be observed in reality.
Science begins at what we observe in the first place. We learn about the nature of the light and the nature of our visual space based on what we observe.
His complaining about bendy light is the tail wagging the dog - out of the order of logical operation.
This Model requires that light bends different depending on the observers location. There is no known physics that explains how this could happen. How does your "azimuthal grid of vision" know the location of the observer so it knows how to bend light as required for the personal observation, Witsit, Shane, any flat earther?
You may as well ask how objects 'know' to appear smaller as you walk away from them. This is simply an axiomatic principle of how visual space works.
And as stated above, we learn about nature from what we observe. Does Bislin believe in Dark Matter I wonder?
For the Globe and Heliocentric Model however no projections and no weird location dependent light bending is required to match all observations
Right, and all you needed to do to firm up this model was curve the earth into a ball and send it off wobbling and spiraling through endless space vacuum at a million miles per hour... seems very reasonable and not weird at all...
for any observer on earth and in space without any flaws, because in reality the earth is a rotating Globe orbiting a distant Sun with a Moon orbiting the Earth.
not having any experimental evidence of either earth-curve or earth-motion is a pretty big flaw.
My Bible tells me that the earth and the firmament are something at rest since the beginning of creation, and that the luminaries were made for us and encircle us... and that is good enough for me.
The earth is the central stage and we are the central drama of all God's creation.
There is not a big endless void of space out there, where earth is just a little flying speck. Modern cosmology is mostly mathematical modeling, theoretical imagineering and science fiction from people who dream of living in Star-Trek.