Extrasolar Mechanical Orrery (HR 8799)

HR 8799 is the first extrasolar star system observed with direct imaging.

Here you can find a time-lapsed video of 12 years of W.M. Keck Observatory (Hawaii) imagery of star system HR 8799 : https://www.youtube.com/watch?v=Wa3OObe8TRI&ab_channel=VideoFromSpace

This mechanical orrery is fully printed. It shows the revolution of the 4 main planets and the dust disk of HR 8799.

This project was realized with the OSUG (Observatoire des Sciences de l'Univers de Grenoble) : https://www.osug.fr/

If you want to know more about HR8799 : https://en.wikipedia.org/wiki/HR_8799

Print Settings :

Nozzle : 0.4mm

Layer resolution : 0.2mm

Filament : PLA

Printed on MK3S - PrusaSlicer 2.6.0

I published Plates and Gcodes to give an idea of the total printing time. You should generate your own Gcodes.

Instructions :

1/ Use the 2 “ClipBig” to attach the “PlateInf” to the “Base”. If the clips are too tight or too loose, you can heat them slightly with a lighter to extend/close them.

2/ Add the “Wheel Crank 1” and the “Wheel Multiple”.

3/ Make a pile with “W48 - W63 - W69 - W92 - W115”.

4/ Add the pile on the “PlateInf”.

5/ Use a “Clip” to attach the “Crank Handle” to the “Crank”.

6/ Use a “Clip” to attach the “Crank Wheel 2” and the “Crank” to the “PlateSup”.

7/ Put the “PlateSup” over the “PlateInf” and use 2 “Clip” to attach it.

8/ Glue all the “Planets Axis”. Put them on the “Planets Base” and add the “Planets”.

9/ Clip the “Planets Base”.

10/ Add the “Dust Disk”. Glue the “Star” and add it in the center. HR8799 is ready to use !