Quickish Question. Setting up a plan for a 3×3 panel mosaic of the Sadr region for the future. I’m new to the asiair ecosystem and never done a mosiac before anywhere. I noticed that the rotation needed for each panel is different. I would have expected a uniform camera rotation angle to get everything to line up perfectly. Is this an error? Is this because the sky is a “dome” going up to the zenith, so rotation angle is different for each panel? Just want to make sure… Thanks!
Benjamin
That’s about it. If you want the sides of the final mosaic to be square each panel needs to be rotated slightly. I think NINA has the option to rotate or not. It’s logical that the AIR uses rotate as the default as I think that’s what most people want. Th differences in projection won’t matter much unless you have a huge fov or many panels.
Indeed, rotations can be more or less severe based on the target you are imaging and your location on the planet.
An example is a mosaic of the Heart&Soul Nebula :
Example without rotation :
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Example with rotation :
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List with position and rotation, copied from Telescopius :
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I’m using a (large) WandererAstro rotator, as I have heavy equipment Good quality, nice price and three different sizes, see :