Presentation on theme: "Use of Registax and LiMovie for the Reduction of Marginal Occultations Tony George Umatilla, Oregon."— Presentation transcript:
Use of Registax and LiMovie for the Reduction of Marginal Occultations Tony George Umatilla, Oregon
Low light video cameras such as the Supercircuits PC164C and Watec WAT 902H series cameras allow observers to record occultations at the very limit of detectability
The problem comes when we try to reduce the data from these very low brightness events, sometimes the target star is not visible on the video monitor and sometimes in LiMovie we cannot see the target star to affix an aperture to measure the brightness
To avoid this problem, some observers use integrating cameras such as: WAT 120N and Astrovid Stellacam Lumenera SKYnyx2-0 SBIG STV
These are great cameras but there are a couple of problems At the maximum frame rate, they may not be as sensitive as the non-integrating cameras If you select an integration rate that is too long, you lose time resolution in your data
One solution to this problem is to use the non-integrating CCD video camera and then integrate the video after recording. This allows you to extract just enough of the signal to detect the event (or confirm a negative event), but no more than is necessary to avoid unnecessary loss of time resolution
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