| | 135 | You should check that the peak level in the star image is no above 200 adu (255 is the max, but the peak can vary from frame to frame). A tool that can be use for this is bibtool, which is set up to run on the (default) bmp format images from the vimbviewr gui. Here is an example of how we might view the image named 20191029_0910_9.bmp: |
| | 136 | |
| | 137 | {{{ |
| | 138 | biblook 20191029_0910_9 bmp N |
| | 139 | |
| | 140 | }}} |
| | 141 | The user places a circle marker around the star and enters a return . At that point the user is shown a 1-line table of values. The header indicatess that the second number from the end of the line is the peak value. Here is an example: |
| | 142 | {{{ |
| | 143 | # Contents of: midodata.2 |
| | 144 | Col01 = X pixels (aperture X center) |
| | 145 | Col02 = Y pixels (aperture Y center) |
| | 146 | Col03 = X center, pixels (intensity weighted centroid) |
| | 147 | Col04 = Y center, pixels (intensity weighted centroid) |
| | 148 | Col05 = magnitude (assuming zp=30) |
| | 149 | Col06 = Average value per pixel in aperture |
| | 150 | Col07 = Average value per pixel in annulus |
| | 151 | Col08 = number of pixels in aperture |
| | 152 | Col09 = Peak pixel value (no bkg-sub, image ADU) |
| | 153 | Col10 = marker code (1=circle,2=box,3=ellipse) |
| | 154 | 106.04 79.07 106.62 78.27 21.475 91.238 87.188 635.0 204.33 1 |
| | 155 | }}} |
| | 156 | |
| | 157 | |
| | 158 | |
