http://www.awrtech.co.uk/drivesys.txt
http://www.awrtech.co.uk/drivesys.txt
AstronomyPageFiveBarnDoor
http://www.geocities.ws/kendurkin/AstronomyPageFiveBarnDoor.html
A Quartz Controlled Scotch Mount
http://www.mikeoates.org/mas/projects/scotch/
Barn door tracker - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Barn_door_tracker
Double arm barn door
tangent arm drive
Double Arm Barn Door Drive - DaveTrott.com
http://davetrott.com/inventions/double-arm-barn-door-drive/
Double Arm Barn Door Drive - DaveTrott.com
http://davetrott.com/inventions/double-arm-barn-door-drive/
A Tracking Platform for Astrophotography | Gary Seronik.com
http://garyseronik.com/?q=node/52
Double Arm Barn-Door tracker general - YouTube
https://www.youtube.com/watch?v=c9ZI5vTB1TY
The Astronomical Unit - TM Projects - Motorised Double-Arm Scotch Mount
http://astunit.com/atm.php?topic=scotch
The Astronomical Unit - TM Projects - Hand-driven Scotch Mount
http://astunit.com/atm.php?topic=handscotch
Basic astrophotography image processing in GIMP - Part 1: image calibration « Synergous.com
http://synergous.com/flatpress/index.php/2011/11/26/basic-astrophotography-image-processing-in-gimp-part-1-image-calibration/
Basic astrophotography image processing in GIMP - Part 2: increasing SNR (image alignment, integration and enhancement) « Synergous.com
http://synergous.com/flatpress/index.php/2011/11/29/basic-astrophotography-image-processing-in-gimp-part-2-increasing-snr-image-alignment-integration-and-enhancement/
Fred's astrophotography - A Scotch mount without tangent error
http://www.astrosurf.com/fred76/planche-tan-corrigee-en.html
