VisAOoogle: Lucky Imaging with VisAO + Google-YouTube Post-Processing

Under certain conditions, such as high winds or observing faint stars, it is advantageous to use the shortest exposure times (~20 msec) of the VisAO camera and perform Lucky imaging. This technique is based on first selecting only the best images in a sequence of short exposures, and then shifting-and-adding (SAA) the results. This process can be computationaly intensive. As such, we have implemented a pipeline for the VisAO camera which is based on Google’s Youtube service. First a sequence of frames is uploaded to YouTube. If SAA can be beneficial, YouTube will offer to fix it, stating that the video is “shaky”. Here we present a comparative analysis of this pipeline.



As you can see, significant improvement is achieved!

Future work:
The next phase of implementing this data reduction pipeline will include direct framegrabber-to-Google uploading, preventing any need for local storage. This will be helpful in limiting the need for MagAO project personnel to cause so many problems at LCO.

This entry was posted in Uncategorized. Bookmark the permalink.