Although the low declination the 2019 explosion of this recurrent nova was observed intensively with low resolution spectrograph on Celestron C11″ telescope. Below are examples of our spectra and all low resolution spectra collected in ARAS database. The result was presented at the Telč conference by Francois Teyssier.
[Read more…] about Recurrent nova V3890 SgrNews
Week of Astronomy on Madeira 2018
Invited by Group of the astronomy on Universidade da Madeira I take part of the week of astronomy organized from 11 to 17 November 2019.
The final report was compiled by Dr. Laurindo Sobrinho.
New observing program – Active Galactic Nuclei
Participation in the radio – optical search for short term variability, i.e. Intro Day Variability and Inter day Variability (IDV)
Institutes involved:
- Ventspils International Radio Astronomy Centre, Latvia
- Astronomical Observatory, Odessa National University, Ukraine
- Odessa observatory URAN-4 Radio-astronomical Institutes NAS Ukraine
Targets:
| Designation | Type | N | filters, exposures |
| OJ 287 (Cnc) | BLLAC | 7 | VRI, 120s |
| 3C 371 (Dra) | BLLAC | 16 | VRI, 90s |
| 3C 273 (Vir) | AGN | 0 | |
| 3C 454.3 (Peg) | AGN | 0 |
var.kozmos.sk is back
Today the new personal webpage was published. There was webpage dedicated to variable stars observations in Slovakia on this URL several years ago. Now personal webpage focused on one observer appears.
GK Per outburst
Nova Persei 1901 use to show regularly dwarf nova outburst. The last one started in August 2018. More details on AAVSO alert notice.
V392 Per
V392 Per nova eruption
Object previously known as dwarf nova erupted as classical nova on April 29, 2018. The outburst was discovered by Yuji Nakamura, Japan. Just few hours later confirmed by T. Tordai and P.A. Dubovsky from central Europe. Almost unprecedented event. However there are two similar object observed in the past. Prior to the nova eruption of V1017 Sagittarii in 1919 (6.2 mag) a dwarf nova outburst was recorded in 1901 (10.8 mag) – however, that dwarf nova outburst was noticed only 45 years later (McLaughlin 1946). V1213 Cen had classical outburst in 2016, then the dwarf nova behaviour prior to the nova outburst was discovered. In both cases first was the nova outburst observations. Now we have relatively well know dwarf nova with the range V = 14.1-16.9 suddenly erupted as nova. More information can be found in AAVSO alert notice.
