| Comet | 40P/Vaisala |
|---|
| User | Sergey Shurpakov |
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| User`s name | Sergey Shurpakov |
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| Observation's time (UT) | 2004-04-20 00:43:00 |
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| Observation's place | Not set |
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| Comparison stars source | ICQ: UO. USNO A2.0 catalogue R magnitudes |
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| Method | C |
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| Magnitude | 16.2 |
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| Mag Error | 0.2 |
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| Coma diameter(') | 0.75 |
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| Tail's length | Not set |
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| Coma degree of condensation | 2 |
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| Positional angle of tail (°) | Not set |
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| Aperture | 15.0 cm |
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| Telescope focal length (mm) | 750 |
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| Telecope Type | L |
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| Exposure of single frame (sec) | 150 |
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| Phot Region | comparison stars are in the same frame as a comet |
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| Software (with version) | ICQ: A32. Astrometrica 3.25 |
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| Stars Exposure | Not set |
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| Photometric-aperture size | ○ 0.75' |
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| Camera | PIX |
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| Chip | T25 |
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| Chip blooming | |
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| Number of images | Not set |
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| Magnitude of the comparison star closest in brightness | 16.0 |
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| Calibration methods | dark-subtracted (and bias-subtracted) |
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| Pixel size width | 2.7" |
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| Pixel size height | 2.7" |
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| Light pollution zone | Not set |
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| Lm | Not set |
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| SQM-L in zenith | Not set |
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| Observatory code | |
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| Comment | Not set |
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