| Comet | 8P/Tuttle
|
|---|
| User | terryjlovejoy |
|---|
| User`s name | |
|---|
| Observation's time (UT) | 1981-01-04 12:00:00 |
|---|
| Tool | 20cm Newtonian |
|---|
| Observation's place | Shailer Park |
|---|
| Comparison stars source | AE - Planetary magnitudes from the American Ephemeris and Nautical Almanac |
|---|
| Method | |
|---|
| Magnitude | :8 |
|---|
| Coma diameter(') | Not set |
|---|
| Tail's length | Not set |
|---|
| Condensation | 4 |
|---|
| Positional angle of tail | Not set |
|---|
| Bortl's scale | Not set |
|---|
| Aperture | 20 |
|---|
| Focal length (mm) | 1200 |
|---|
| Type of tool | L - Newtonian reflector |
|---|
| Magnification | 60 |
|---|
| Field of view (°) | 1.67 |
|---|
| SQM-L in zenith | Not set |
|---|
| Light pollution zone | Yellow |
|---|
| Lm | Not set |
|---|
| Comment | Easily visible. Although noted as 8pm, I believe it was later (waited for comet to get higher in sky) |
|---|
| Morris Format | 1981 Jan 4.5 UT: m1=8:, DC=4 ...20-cm L (60x) ...Terry Lovejoy (Shailer Park, Australia) |
|---|
