| Comet | C/2015 V2 (Johnson) |
|---|
| User | Sergey Shurpakov |
|---|
| User`s name | Sergey Shurpakov |
|---|
| Observation's time (UT) | 2017-05-21 21:21:00 |
|---|
| Observation's place | Not set |
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| Comparison stars source | ICQ: U0.But this catalogue hasn`t been submited into database |
|---|
| Method | C |
|---|
| Magnitude | 9.3 |
|---|
| Mag Error | Not set |
|---|
| Coma diameter(') | 2.19 |
|---|
| Tail's length | Not set |
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| Coma degree of condensation | 7.5 |
|---|
| Positional angle of tail (°) | Not set |
|---|
| Aperture | 7 cm |
|---|
| Telescope focal length (mm) | 280 |
|---|
| Telecope Type | R |
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| Exposure of single frame (sec) | 60 |
|---|
| Phot Region | |
|---|
| Software (with version) | ICQ: A32. Astrometrica 3.25 |
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| Stars Exposure | Not set |
|---|
| Photometric-aperture size | ○ 2.19' |
|---|
| Camera | QHY |
|---|
| Chip | ICX |
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| Chip blooming | |
|---|
| Number of images | Not set |
|---|
| Magnitude of the comparison star closest in brightness | 10.4 |
|---|
| Calibration methods | dark-subtracted (and bias-subtracted) |
|---|
| Pixel size width | 4.4" |
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| Pixel size height | 4.4" |
|---|
| Light pollution zone | Not set |
|---|
| Lm | Not set |
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| SQM-L in zenith | Not set |
|---|
| Observatory code | |
|---|
| Comment | Not set |
|---|
