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INDIGO is the next generation of INDI, based on layered architecture and software bus.

This is the list of requirements taken into the consideration:

  1. No GPL dependency to allow commercial use under application stores licenses.
  2. ANSI C for portability and to allow simple wrapping into .Net, Java, GOlang, Objective-C or Swift in future
  3. Layered architecture to allow direct linking of the drivers into applications and or to replace wire protocol.
  4. Atomic approach to device drivers. E.g. if camera has imaging and guiding chip, driver should expose two independent simple devices instead of one complex. It is much easier and transparent for client.
  5. Drivers should support hot-plug at least for USB devices. If device is connected/disconnected while driver is running, its properties should appear/disappear on the bus.
  6. FITS, XISF, JPEG, TIFF, RAW, AVI and SER format supported directly by the framework.

This is already done


  1. INDIGO Bus framework
  2. XML & JSON protocol adapter for client and server side
  3. indigo_server - server with loadable (indigo .so/.dylib and indi executables) drivers
  4. indigo_server_standalone - server with built-in drivers
  5. INDIGO Server for macOS wrapper (provided just as an example)
  6. Integrated HTTP server for BLOB download & server control (= web based INDI control panel)
  7. indigo_prop_tool - command line tool to list and set properties


  1. CCD (with wheel, guider, AO and focuser) simulator
  2. Mount simulator
  3. Atik CCD (Titan, 3xx/4xx/One with built in wheel, VS/Infinity, 11000/4000) driver
  4. Atik EFW2 filterwheel driver
  5. SX CCD driver
  6. SX wheel driver
  7. Shoestring FCUSB focuser driver
  8. SSAG/QHY5 CCD driver
  9. ASI wheel driver
  10. IIDC CCD driver
  11. ASI CCD driver
  12. NexStar mount driver (supports Celestron NexStar and Sky-Watcher mounts)
  13. LX200 mount driver (supports Meade mounts and EQMac)
  14. FLI filter wheel driver
  15. FLI CCD driver
  16. FLI focuser driver (testers needed)
  17. USB_Focus v3 driver
  18. SBIG CCD driver (with guider, guider CCD and external guider head)
  19. SBIG Filter wheel driver (part of CCD driver)
  20. ASCOM driver for INDIGO Camera
  21. ASCOM driver for INDIGO Filter Wheel
  22. QHY CCD driver (NOTE: Maybe unstable due to inherited instability in the QHY SDK)
  23. ZWO USB-ST4 port
  24. Meade DSI Camera driver
  25. Takahashi Temma mount driver
  26. ICA (ImageCapture API) driver for DSLRs (Mac only, deprecated)
  27. GPS Simulator
  28. NMEA 0183 GPS driver
  29. Andor CCD driver (32/64-bit Intel Linux only)
  30. WeMacro Rail focuser driver (platform independent USB & Mac only bluetooth)
  31. EQMac guider driver (Mac only, deprecated)
  32. Apogee CCD driver
  33. Moravian Intruments CCD and filter wheel driver
  34. HID Joystick AUX driver
  35. CGUSBST4 guider driver
  36. Brightstar Quantum filter wheel driver (untested)
  37. Trutek filter wheel driver (untested)
  38. Xagyl filter wheel driver (untested)
  39. Optec filter wheel driver (untested)
  40. Pegasus DMFC focuser driver
  41. RigelSys nSTEP focuser driver
  42. RigelSys nFOCUS focuser driver (untested)
  43. iOptron mount driver
  44. MoonLite focuser driver
  45. MJKZZ rail focuser driver (untested, platform independent USB & Mac only bluetooth)
  46. GPhoto2 CCD driver (deprecated, excluded from build)
  47. Optec focuser driver (untested)
  48. ToupTek CCD driver
  49. AltairAstro CCD driver
  50. RTS-on-COM aux (shutter) driver (untested)
  51. DSUSB aux (shutter) driver
  52. GPUSB guider driver
  53. LakesideAstro focuser (untested)
  54. SX AO driver
  55. SBIG AO driver (part of CCD driver)
  56. SynScan (EQMod) mount driver
  57. ASCOL driver
  58. ASI Focuser driver
  59. DeepSky Dad AF1 and AF2 focuser driver
  60. Baader Planetarium SteelDrive II focuser driver
  61. Unihedron SQM driver
  62. Artesky Flat Box USB driver
  63. NexDome dome driver (untested, based on G.Rozema's firmware)
  64. USB_Dewpoint V1 and V2 AUX driver
  65. Pegasus Astro FlatMaster driver
  66. AstroGadget FocusDreamPro / ASCOM Jolo focuser driver added
  67. Lacerta Flat Box Controller AUX driver
  68. UVC (USB Video Class) CCD driver
  69. NexDome v3 dome driver (untested, requires firmware v.3.0.0 or newer)
  70. Optec Flip-Flap driver
  71. GPS Service Daemon (GPSD) driver
  72. Lunatico Astronomy Limpet/Armadillo/Platypus Focuser/Rotator/Powerbox/GPIO Drivers
  73. Lunatico Astronomy Limpet/Armadillo/Platypus Rotator/Focuser/Powerbox/GPIO driver
  74. Lunatico Astronomy Dragonfly Dome / Relay Controller GPIO driver
  75. Rotator Simulator Driver
  76. Lunatico AAG CloudWacher driver
  77. Baader Planetarium Classic (Rotating) dome driver
  78. MGBox driver
  79. Manual wheel driver
  80. PMC8 mount controller driver
  81. RoboFocus focuser driver
  82. QHY CFW filter wheel driver
  83. RainbowAstro Mount driver
  84. NexStar AUX protocol mount driver
  85. Lunatico Astronomy AAG CloudWatcher driver
  86. MyFocuserPro 2 focuser driver
  87. Interactive Astronomy SkyRoof driver
  88. ASTROMECHANICS focuser driver
  89. Nexdome Beaver dome driver
  90. ASTROMECHANICS Light Pollution Meter PRO driver
  91. Optec Pyxis rotator driver
  92. SvBony camera driver
  93. Geoptik flat field generator driver
  94. Talon 6 dome driver
  95. Interactive Astronomy SkyAlert driver
  96. Vixen StarBook mount driver
  97. PlayerOne camera driver
  98. PegasusAstro Prodigy Microfocuser driver

This is under development

  1. a-Box Adaptive optics driver

How to build INDIGO


Ubuntu / Debian / Raspbian

sudo apt-get install build-essential autoconf autotools-dev libtool cmake libudev-dev libavahi-compat-libdnssd-dev libusb-1.0-0-dev libcurl4-gnutls-dev libz-dev git curl bsdmainutils patchelf

It is advised to remove libraw1394-dev

sudo apt-get remove libraw1394-dev


dnf install automake autoconf cmake libtool gcc gcc-c++ libusb-devel avahi-compat-libdns_sd-devel libudev-devel git curl curl-devel zlib-devel

It is advised to remove libraw1394-devel

dnf remove libraw1394-devel


Install XCode and download and build autoconf, automake and libtool (use tools/ script).

Get code and build it

git clone

cd indigo

make all

build/bin/indigo_server -v indigo_ccd_simulator [other drivers]

and connect from any INDIGO/INDI client or web browser to localhost on port 7624...

No pthread_yield()

New linux distributions come with the latest glibc that does not provide pthread_yield() However libqhy.a depends on it. We do not have control over this library and it is not officially supprted by QHY any more. So if you get complaints by the linker for missing pthread_yield call please execute the folowing command in indigo_drivers/ccd_qhy/bin_externals/pthread_yield_compat/:

make patchlib

and rerun the build


INDIGO is a system of standards and frameworks for multiplatform and distributed astronomy software development designed to scale with your needs.








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