Download Nudger the Lunar Solar Auto-Guider ver 220.127.116.11
(683 Kb Zip),
Updated September 12, 2010 added in "Negative" checkbox to allow for solar guiding on sunspots.
Nudger User Guide
I wrote an application that can be used to auto-guide an ASCOM driven telescope, by tracking brighter objects on the earth-shine illuminated shadowed surface of the moon. It removes the need to constantly make pointing adjustments using the hand controller.
It is call it "Nudger, The Lunar Auto-Guider" because it nudges the telescope ever so slightly when needed to maintain accurate pointing. It is intended to be used by individuals or groups that monitor the moon for meteoroid impacts.
Lunar guiding rates in telescope mounts can be inaccurate due to the your location on Earth, the moon's relative closeness and numerous other reasons. Using low light level cameras, features on the lunar surface illuminated by earth-shine, can be seen above the background darkness. This subtle illumination of lunar features allows them to be tracked and used to guide the telescope's pointing. Although less desirable, bright terminator features can also be tracked.
My sincerest thanks to Stefano Sposetti and Gene Mroz who have been extremely helpful by testing Nudger and providing feedback.
Note on Video Overlay: Some systems use video overlay to preview live video footage which will prevent Nudger from capturing the video window. One quick way to access the hardware settings is using Windows Media Player. Open Windows Media Player and then access Tools -> Options -> Performance and slide the Video Acceleration slider bar to the left and click the Apply button. Click OK to exit the settings dialog box.
For more information, please read
Beating Hardware Overlays.
Screen capture of Nudger tracking Aristarchus from an AVI file.
Magnitude 11.28 TYC608-900-1 being tracked from an avi file to see how deep Nudger will go. Looks like it will go deeper.
Celestron 8" f/5 with Watec 902H2 Ult at prime focus.