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Browsing Notas Técnicas by Subject "Astronomical photometry"
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Item Open Access Multiband photometry of PSNJ14102342-4318437 with OAUNI(The Astronomer's Telegram, 2016-01-21) Pereyra, Antonio; Cori, W.; Ricra, J.; Tello, J.We report multiband photometry of Type Ib SN PSNJ14102342-4318437 (ATel #8415, ATel #8434, ATel #8437, ATel #8504) on 2016-01-10 (UT) gathered with the OAUNI 51cm telescope (Pereyra et al. 2015; arXiv:1512.03104) at Huancayo Observatory, Peru. CCD imaging using VRI filters was performed under non-photometric conditions (seeing ~1.9") and airmass = 1.4. Total integration times of (30x20s=600s) for V and R filters, and (24x20s=480s) for I filter yielded: Date (UT) | filter | mag 2016-01-10.385 | V | 16.79 +/- 0.06 2016-01-10.395 | R | 15.93 +/- 0.12 2016-01-10.409 | I | 15.68 +/- 0.10 USNO-B1 field stars were used for the zero point calibration. The measurements presented here are ~25d after the MASTER discovery (ATel #8415) and ~32d after the maximum (ATel #8434). Consistent with this, and considering the NED extinction toward the host galaxy (NGC5483, z=0.006), the color indices (V-R) and (R-I) are in reasonable agreement with the zero-redshift color-color diagrams for Type Ib SNe about 20-30d past the maximum (Poznanski et al., 2002, PASP, 114, 833). The OAUNI project is supported by UNI, TWAS and IGP.Item Open Access OAUNI optical observation of the supernova ASASSN-15lp(The Astronomer's Telegram, 2015-08-26) Pereyra, Antonio; Cori, W.; Meza, E.; Ricra, J.; Zevallos, M.During the commissioning runs of the National University of Engineering's Astronomical Observatory (OAUNI) project, we report optical imaging of the Type Ia SN ASASSN-15lp (ATel #7691, ATel #7692) on 2015-07-17.352 (UT). The measurement was gathered using the OAUNI 51cm telescope at the Huancayo Observatory, Peru (3300 masl at the central peruvian Andes). The observation was made under non-photometric clear skies and through an airmass of 1.4. A 180-second exposure in V filter yielded V = (15.86 +/- 0.05) mag. The zero point calibration was obtained using comparison stars in the neighborhood of the field. Our measurement is 28 days after the discovery (ATel #7691) and caution must be taken for contamination with the host galaxy. The OAUNI project is supported by UNI, The World Academy of Sciences (TWAS) and IGP.Item Open Access OAUNI photometry of ASASSN-16gq/AT2016cym(The Astronomer's Telegram, 2017-04-21) Pereyra, Antonio; Ricra, J.; Zevallos, M.We report optical photometry of Type Ia SN ASASSN-16gq/AT2016cym (ATel #9199, ATel #9219) on 2016-07-11 (UT) gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging was performed with seeing ~1.7" and airmass = 1.3. Our measurements yielded: Date (UT) | filter | IT | mag 2016-07-11.085 | V | 1200s (60x20s) | 17.94 +/- 0.06 2016-07-11.106 | R | 0760s (38x20s) | 17.84 +/- 0.04 Field stars were used for the zero point calibration. Caution must be taken for contamination of edge-on Sc host galaxy (ESO 446-G023). Following FLWO/FAST classification (ATel #9219), our measurements are ~17 days after maximum. The OAUNI project is supported by UNI, TWAS, IGP and Cienciactiva (Convenio 102-2015 Fondecyt)."Item Open Access OAUNI photometry of ASASSN-16hw(The Astronomer's Telegram, 2016-09-30) Pereyra, Antonio; Ricra, J.; Zevallos, M.We report optical photometry of Type Ia SN ASASSN-16hw (=SN 2016ekt, ATel #9278, ATel #9289, ATel #9300) on 2016-08-06 (UT) gathered with the OAUNI 51cm telescope (Pereyra et al. 2015;arXiv:1512.03104) at Huancayo Observatory, Peru. CCD imaging measurements using V and R broadband filters were acquired with seeing ~1.9" and airmass = 1.5. A total integration time of 42x20s=840s in each filter yielded: Date (UT) filter mag 2016-08-06.119 R 14.656 +/- 0.003 2016-08-06.120 V 14.497 +/- 0.004 Field stars were used for the zero point calibration. Following PESSTO and Du Pont classifications (ATel #9289, ATel #9300), our measurements are very close to maximum. The OAUNI project is supported by UNI, TWAS, IGP and Cienciactiva (Convenio 102-2015 Fondecyt).Item Open Access OAUNI photometry of ASASSN-16hz(The Astronomer's Telegram, 2016-12-07) Pereyra, Antonio; Ricra, J.; Zevallos, M.We report optical photometry of Type Ia SN ASASSN-16hz (=SN 2016eqb, ATel #9332, ATel #9333) on 2016-08-09 (UT) gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging was performed with seeing ~1.8" and airmass = 1.3. A total integration time of 900s (45x20s) and 880s (44x20s) in R and V filter, respectively, yielded: Date (UT) | filter | mag 2016-08-09.397 | R | 15.84 +/- 0.04 2016-08-09.412 | V | 15.82 +/- 0.05 UCAC4 field stars were used for the zero point calibration. Following Mayall/KOSMOS classification (ATel #9333), our measurements are ~2 days after maximum. The OAUNI project is supported by UNI, TWAS, IGP and Cienciactiva (Convenio 102-2015 Fondecyt)."Item Open Access OAUNI photometry of SN2017glq/Gaia17cfi(The Astronomer's Telegram, 2017-12-08) Pereyra, Antonio; Ricra, J.We report optical photometry of Type Ia SN2017glq/Gaia17cfi (TNSDR 2017-13365, TNSCR 2017-1194) on 2017-09-19.182 (UT) gathered with the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging was performed using R band with seeing ~1.6" and airmass = 1.5. A total integration time of 59x20s=1180s yielded R = (14.16 +/- 0.05) mag. NOMAD field stars were used for the zero point calibration. Following OSC (Guillochon et al. 2016, arXiv:1605.01054) light curve, our measurements are very close to the maximum. The OAUNI project is supported by UNI, TWAS, IGP and Cienciactiva (Convenio 102-2015 Fondecyt)."Item Open Access OAUNI photometry of SN2017gmr/DLT17cq(The Astronomer's Telegram, 2017-12-22) Pereyra, Antonio; Ricra, J.Optical photometry of Type II SN2017gmr/DLT17cq (ATel #10706, ATel #10717, TNSCR 2017-1220) on 2017-09-19.207 (UT) was gathered using the OAUNI 51cm telescope at Huancayo Observatory, Peru. CCD imaging was performed in R band with seeing ~1.5" and airmass = 1.3. A total integration time of 55x20s=1100s yielded R = (14.05 +/- 0.04) mag. NOMAD field stars were used for the zero point calibration. The OAUNI project is supported by UNI, TWAS, IGP and Cienciactiva (Convenio 102-2015 Fondecyt).