| Comet | C/2015 V2 (Johnson) |
|---|
| User | Sergey Shurpakov |
|---|
| User`s name | Sergey Shurpakov |
|---|
| Observation's time (UT) | 2017-01-19 00:24:00 |
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| Observation's place | Observatory "Star Wanderer" MPC-C36 |
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| Comparison stars source | Not set |
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| Method | C |
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| Magnitude | 12.4 |
|---|
| Mag Error | Not set |
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| Coma diameter(') | 0.70 |
|---|
| Tail's length | 5.4' |
|---|
| Coma degree of condensation | 6.5 |
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| Positional angle of tail (°) | 320 |
|---|
| Aperture | 254 cm |
|---|
| Telescope focal length (mm) | 1200 |
|---|
| Telecope Type | L |
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| Exposure of single frame (sec) | 60 |
|---|
| Phot Region | |
|---|
| Software (with version) | ICQ: A48. Astrometrica 4.8 |
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| Stars Exposure | Not set |
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| Photometric-aperture size | |
|---|
| Camera | Defined by user: Artemis 285AL |
|---|
| Chip | |
|---|
| Chip blooming | |
|---|
| Number of images | Not set |
|---|
| Magnitude of the comparison star closest in brightness | 13.9 |
|---|
| Calibration methods | dark-subtracted (and bias-subtracted) |
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| Pixel size width | 2.22" |
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| Pixel size height | 2.22" |
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| Light pollution zone | |
|---|
| Lm | |
|---|
| SQM-L in zenith | |
|---|
| Observatory code | C36 |
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| Comment | Not set |
|---|
