.. _orthosphere-mode:
Orthosphere view mode
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.. hint:: Use the button |orthosphere-icon| in the camera pane, or :guilabel:`ctrl` + :guilabel:`j` to enter and exit the orthosphere view mode.
.. raw:: html
Since 3.3.0
The orthosphere view mode blends the two hemispheres of the orthographic projection in :ref:`panorama mode ` on top of each other to simulate a full celestial sphere. There are two profiles:
- **Orthosphere** -- the base mode, in which both hemispheres are blended on top of each other. Optionally, you can fill up the sphere with a material with a certain :ref:`refraction index `. To do so, open the preferences dialog, go to the Graphics configuration tab and scroll down to the experimental section. You will find a "Refraction index" slider to modify it.
- **Orthosphere cross-eye** -- a stereoscopic (3D) cross-eye mode which lays the images for each eye side-by-side.
.. hint:: :guilabel:`ctrl` + :guilabel:`shift` + :guilabel:`j` -- Cycle between the different profiles.
.. |orthosphere-icon| image:: img/ui/orthosphere-icon.png