DIY Dome controller
- rpineau
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DIY Dome controller
https://rti-zone.org/astro_dome_control.php
Some function are still a work in progress (like the support for dropout shutter).
Rodolphe
FLI ML-16200 / FLI CFW2-7 / Astrodon Gen II LRGB filters & Ha 5nm filter / Chroma LoGlow & RGB filters
ZWO ASI 174MC-Cool , ASI 294MC PRO, ASI 290MM & ASI120MM Mini / Pegasus Astro Falcon rotator / TheSkyX Pro (macOS, Linux)
http://www.rti-zone.org/astro.php
- Graeme1858 Online
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Re: DIY Dome controller
That's a great article Rodolphe.
Regards
Graeme
Celestron 9.25 f10 SCT, f6.3FR, CGX mount.
ASI1600MM Pro, ASI294MC Pro, ASI224MC
ZWO EFW, ZWO OAG, ASI220MM Mini.
APM 11x70 ED APO Binoculars.
https://www.averywayobservatory.co.uk/
- JeffBevan
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Re: DIY Dome controller
patience!
- yobbo89
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Re: DIY Dome controller
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .
- KathyNS
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Re: DIY Dome controller
The math to compute the dome azimuth from the mount's
Most session control software (
DSO AP: Orion 200mm f/4 Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,Oiii,LRGB filters; KWIQ/QHY5 guide scope; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on HEQ5 pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome; iOptron CEM60 (pier); Helena Observatory (H2O) Astrobin
- rpineau
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Re: DIY Dome controller
Usually dome controller only deal with going to an azimuth as instructed (they only need to know how many steps are required for a full rotation and the home position to be able to position the slit at the requested azimuth, this math is a lot simpler ), and doing shutter control and safety monitoring to close all things in case of weather events (rain, very high win speed, ....).
In my controller I used an Arduino DUE because I wanted to put the AccelStepper library in a proper timer interrupt (the older code base from when it wa used by NexDome, to which I contributed quite a bit, was too slow on the Arduino Leonardo). The DUE has the computing speed to allow this (ARM Cortex M3 at 84MHz, lots of RAM and flash). This way I can do proper acceleration/deceleration in the interrupt without much impact on the main loop dealing with communication, command parsing, ...
Once I had this working, I added more and more feature (automatic calibration, automatic reconnection to shutter controller via the XBee, Ethernet support, ....).
The whole project is open source and I use it myself in my dome... feel free to re-use, modify, tweak, remove, .. anything from it.
Rodolphe
FLI ML-16200 / FLI CFW2-7 / Astrodon Gen II LRGB filters & Ha 5nm filter / Chroma LoGlow & RGB filters
ZWO ASI 174MC-Cool , ASI 294MC PRO, ASI 290MM & ASI120MM Mini / Pegasus Astro Falcon rotator / TheSkyX Pro (macOS, Linux)
http://www.rti-zone.org/astro.php
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