AstroNotes

Here we present multi-band photometric follow up observations of 13 optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council o...

Here we present multi-band photometric follow up observations of 11 optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council o...

We present the results of the monthly ZTF experiment, conducted concurrently with DECam observations, which aimed to detect rapidly evolving transients in the combined dataset. Despite adverse weat...

We announce the third experimental survey with the Zwicky Transient Facility (ZTF) to happen for three consecutive nights starting on 2024-03-01 03:06:28.678 UT. This multi-wavelength, high-cadence...

Here we present Multi-Senor Photometric Follow-up of Probable Novae in M31 using 3 different observatories in Canada. 1) DAO - 1.82-m Plaskett telescope (Dominion Astrophysical Observatory) 2) RA...

Here we present multi-band photometric follow up observations of 17 optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council o...

Here we present multi-band photometric follow up observations of selected optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Cou...

Discovery of AT2023xwo, a probable nova in M31.

Here we present multi-band photometric follow up observations of 9 optical transients using 1.83-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council of...

Here we present photometric follow up observations of 2023uri in M31 discovered by XOSS (J. Xu, et. al) on 2023-10-11 14:12 UT.

Here we present multi-band photometric follow up observations of 27 optical transients using 1.82-m Plaskett Telescope (E2V, 4K x 2K CCD) at Dominion Astrophysical Observatory of the National Resea...

We have obtained SDSS u, g and r filter observations of specific optical transients discovered by ZTF (Fremling, C., et al.), Pan-STARRS (Chambers, K.C., et al.), ATLAS (Tonry, J., et al), A. Horti...

MeerLICHT follow-up of the localisation region of GW event LVK S230518h identified two extragalactic transients: AT2023ixg and AT2023iyb

We announce the DECam Survey of Intermediate Redshift Transients (DESIRT), a time domain program using the Dark Energy Camera (DECam). We repeatedly observe in g,r,z bands regions of the sky that t...

We announce the public release of the ATLAS forced photometry server, which provides public access to photometric measurements over the full history of ATLAS survey.  

We report the start of the Young Supernova Experiment, a new collaboration between DARK (U Copenhagen; PIs Hjorth and Ramirez-Ruiz), UC Santa Cruz (PIs Foley and Ramirez-Ruiz), U Illinois (PIs Fren...

In order to adapt the TNS for both the present and future needs, and in particular to the activity of transient brokers as significant sources that report discoveries of transients that are observe...

We further revise the astrometric accuracies of several surveys by rounding up the values, in order to decrease the occurrence of situations where separate objects are created on the TNS that are a...

Revision of the treatment of object coordinates (astrometric accuracies) was deployed today - 2019-06-23 - on the TNS. Currently 9 groups have a defined astrometric accuracy (that is below the defa...