AstroNotes

We identify a quickly evolving blue transient with a host-galaxy counterpart, AT2023vth. We encourage spectroscopic follow-up observations to determine the redshift of the transient, which is current…

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 C…

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.

We report photometric follow up with the IAC80 telescope of the candidate SN in NGC 6676 AT 2023txu (ATLAS23tma, Gaia23ctg).

We report pre-rise activity in the type IIn SN 2023qdi, discovered by Pan-STARRS on UT 2023-07-26 and with first ZTF detection on UT 2023-07-27. The combined PanSTARRS and ZTF photometry, together w…

We report photometric follow-up observations of AT 2023rto (ZTF23abbteqg, ATLAS23str), a supernova candidate in NGC 2838, with one of the 40 cm LCOGT telescopes at Teide Observatory

We report observations of a fast-evolving red transient. AT 2023sva is a likely optical afterglow with a possible GRB counterpart detected by Fermi.

We report photometric follow up of the type II SN 2023rve in NGC 1097 using the Las Cumbres Observatory Global Telescope network DeltaRho 350 telescope and QHY600 CMOS camera at McDonald Observatory…

We report observations of the blazar AO 0235+16 with the Large Array Survey Telescope (LAST) during 3 nights, following-up recent reports of optical brightening.

We report observations of a fast-fading red transient. AT2023rdp is a possible optical afterglow, although we note that it is 3 degrees from the Galactic plane.

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 of …

We report observations of a fast-evolving red transient. AT 2023qxj is a likely optical afterglow with a GRB counterpart discovered by Fermi.

Here we present multi-band photometric follow up observations of 8 optical transients using 1.82-m Plaskett Telescope + CCD at Dominion Astrophysical Observatory of the National Research Council of C…

Here we present photometric follow up observations of 3 optical transients discovered by GOTO (M. Pursiaine., et al.), GEOTS (B. Kumar) and MASTER (T. Pogrosheva., et al.) using 0.33-m Telescope + K…

We report spectroscopic observation obtained with ALFOSC at the Nordic Optical Telescope. The spectrum shows a blue continuum with O II absorption lines and narrow emission lines from the host galaxy…

Here we report pre-rise activity in the candidate supernova AT 2023mtp (ZTF23aalftvv, ATLAS23qbj), that is likely associated with a low-surface-brightness galaxy. AT 2023mtp was discovered by ZTF on …

Multiband photometric observations and their evaluation to instrumental magnitudes were performed using standard Johnson-Cousins filters (B, V, Rc) as well r and g Sloan filters, and not standard one…

We have obtained L filter (square transmission window from 420 to 680 nm) observations of SN2023ixf in M101 discovered by K.Itagaki on 2023-05-19.728. The observations were done using a 130mm refract…

Here we present multi-band photometric follow up observations of 5 optical transients using 1.82-m Plaskett Telescope (E2V, 4K x 2K CCD) at Dominion Astrophysical Observatory of the National Research…

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 Researc…

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-D…

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

We have obtained SDSS u, g and r filter observations of SN 2023ixf in M101 discovered by K.Itagaki on 2023-05-19.728. The photometric observations and colour index were done using 1.8-m Plaskett Tele…

We report the radio detection of SN2023ixf in the nearby galaxy M101 at 10 GHz

We report that the fast declining transient reported in Astronote 2023-178 by Swain et al. was discovered and first reported to the Transient Name Server by ATLAS (Tonry et al. TNS Astronomical Trans…

We report the detection of luminous radio emission from the fast blue optical transient AT2023fhn at z=0.24.

We report the detection of luminous radio emission from the luminous fast blue optical transient AT2023hkw at z=0.339.

I report the continuation of the photometric follow-up of SN 2023ixf through images obtained remotely at the Burke-Gaffney Observatory - Halifax/Canada.

We report the results of Swift X-ray observations of AT2023jxk.

We report observations of a hostless, fast-evolving red transient. AT2023jxk is a candidate afterglow with no reported GRB counterpart.

Third set of multiple amateur calibrated measurements in V & B bands for supernova SN 2023ixf using the LCO Global Telescope Network 0m4 telescopes.

Using data taken with the Keck Planet Finder spectrograph we calculate a host E(B-V) extinction of 0.031±0.006.

We present a summary table of X-ray observations of the fast blue optical transient AT2022tsd for reference use in our submitted research note.

Second set of multiple amateur calibrated measurements in V & B bands for supernova SN 2023ixf using the LCO Global Telescope Network 0m4 telescopes.

I report the photometric follow-up of SN 2023ixf through an image obtained remotely at the Burke-Gaffney Observatory - Halifax/Canada.

Photometric follow-up observations of SN 2023ixf

Photometric multi-band follow up of SN 2023ixf in M101 from INAF - Brera Astronomical Observatory, Italy

The newly-reported pre-discovery images of M101 with small telescopes provide additional constraints on the SN 2023ixf eruption time. The first clear detection of the eruption is on 2023-05-18.82611 …

I here report a candidate for the progenitor of SN2023ixf. The archival HST and other multi-band images in the NASA Extragalactic Database (NED) were used to search for the progenitor at the reported…

We report the radio non-detection of SN2023ixf in the nearby galaxy M101 at 10 GHz.

23 serendipitous image frames of M101 were acquired showing SN 2023ixf during pre-discovery times 2023-05-19 05:11 UTC through 2023-05-19 10:48 UTC. Magnitude calculations were made for each frame u…

Multiple photometry measurements in the clear, V, B, R and I bands of supernova SN 20023ixf using MicroObservatory

Photometric follow up of SN 2023ixf in M101 from Observatoire du Mont St-Joseph, Québec, Canada.

Amateur Multiple measurements in V & B bands for supernova SN 2023ixf using the LCO Global Telescope Network 0m4 telescopes

We present the second spectrum of SN 2023ixf observed at 2023-05-24 03:36:42.676 UTC on May 24, 2023 (MJD = XYZ) using the Dark Energy Spectroscopic Instrument (DESI) at the 4m Mayall Telescope at Ki…

We report the preliminary results of the search for the progenitor of SN 2023ixf in archival HST data.

We present the spectrum of SN 2023ixf observed at 03:19:22.4 UTC on 23 May 2023 (MJD = 60087.138) using the Dark Energy Spectroscopic Instrument (DESI) at the 4m Mayall Telescope at Kitt Peak Nationa…

We report broad-band (BVRI) polarimetric observations of SN 2023ixf with the Liverpool Telescope on 2023 May 21