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Star Dome

by andyhunt66, published

Star Dome by andyhunt66 Jun 15, 2017
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Design Tools

Blender

License

Star Dome by andyhunt66 is licensed under the Creative Commons - Attribution license.

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Thing Statistics

677Views 154Downloads Found in Physics & Astronomy

Summary

My attempt at a realistic star projection dome.
Includes the 500 brightest stars, in their correct positions, and with relative sizes according to their relative apparent magnitudes.

The sizes of the holes are in steps, according to the rounded up value of their magnitudes, and negative values are substituted with tiny positive values (e.g. Arcturus). The next version should have gradually increasing holes instead (once I get my head around logarithms.

Print Settings

Printer Brand:

LulzBot

Printer:

TAZ 5

Rafts:

No

Supports:

No


Notes:

I had a hard time getting Simplify3D to print this properly, so went to the fallback of Cura and it was fine.

The blender object is not at all perfect - lots of manifold errors, some 'holes within holes' that create strange artefacts, and a lot of hand made error-correction, but it will do for a first attempt. A lot of cleanup was done in NetFabb, and the resulting stl seems to be ok.

You only need the stl file. The others are provided in case you want to try and improve it within Blender.

How I Designed This

The Blender python script creates cylinders of the relative size through the origin pointing in the right direction to intersect the dome.

And then manually deleting the bottom half of the dome.

The dome creation is pretty rubbish - there must be better ways of doing it.

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