Photometric observations with a 80mm refractor
I am measuring photometry on images taken by Francois Kugel with the following setup:
- 80mm F/5 refractor
- ST8300 SBig CCD camera (2x2 binning)
- IR 742nm cut-off filter
Asteroids
| Name | Harris period (hours) | Harris amplitude (mag) | Measured period (hours) |
Measured amplitude (mag) |
Status | CALL status |
| (6) Hebe | 7.2745 | 0.05-0.20 | 7.2755 | 0.061 | final | 3 |
| (29) Amphitrite | 5.390 | 0.01-0.15 | 5.3886 | 0.146 | measured during testing phase, not very accurate | 3 |
| (326) Tamara | 14.184 | 0.11 | 14.4701 | 0.211 | final | 2+ |
| (344) Desiderata | 10.77 | 0.17 | 10.7458 | 0.165 | final | 3 |
| (347) Pariana | 4.0529 | 0.09-0.42 | 4.05236 | 0.339 | final | 3 |
Remarks:
- CALL status ranges from 1 (likely wrong) to 3 (reliable). The CALL website is here.
- uncertainties on the period and amplitudes are actually 1-sigma values, obtained by propagating the 1-sigma magnitude noise through the least square fit. So systematic errors are not included, and it is reasonnable to multiply the uncertainties given here by 3 (to get 3-sigma values).
Eclipsing variable stars
| Name | alpha/delta J2000 | Type | Officiel period (days) | Official magnitude | Measured period (days) |
Measured amplitude (mag) |
More information |
| ET Leo | 10 33 25.79 +17 34 27.4 |
EW (W UMa eclipsing binary) |
0.34650349 | 9.558 (0.107) V | 0.34647 | 0.122 | see on AAVSO-VSX |
| ASAS J123732-0126.1 | 12 37 32.00 -01 26 06.0 |
ESD (eclipsing semi-detached), EC (eclipsing contact) or RRC (pulsating) |
0.703708 | 10.9 (0.14) V | 0.70615 | 0.163 | see on AAVSO-VSX |
| PU Vir | 12 39 48.56 -02 26 21.7 |
EW (W UMa eclipsing binary) |
0.2562555 | 11.54 - 11.71 clear | 0.256231 | 0.135 | see on AAVSO-VSX |
| V0589 Lyr | 19 25 31.84 +42 51 13.0 |
EW (W UMa eclipsing binary) |
0.6962 | 11.6 - 12.0 R1 | 0.696437 | 0.419 | see on AAVSO-VSX |
Pulsating variable stars
| Name | alpha/delta J2000 | Type | Officiel period (days) | Official magnitude | Measured period (days) |
Measured amplitude (mag) |
More information |
| UX LMi | 10 45 42.19 +27 57 54.2 |
DSCT (Delta Scuti pulsating) |
0.15064 | 8.8 (0.074)CR V | ~ 0.15 | 0.043 | lightcurve unstable, amplitude changes rapidly (multiple periods) see on AAVSO-VSX |
| ASAS J123130-0152.2 | 12 31 30.00 -01 52 12.0 |
DSCT (Delta Scuti pulsating) |
0.14802 | 11.99 (0.2) V | 0.14969 | 0.150 | see on AAVSO-VSX |