Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PSN J13420972+0415447

PSN J13420972+0415447   2014 05 30.25  *  13 42 09.72 +04 15 44.7  18.9 U   17E   1N  N5270     D 0

2014 05 30.933

PSN J13420972+0415447 = SNhunt253. Object measured 17.7 +/- 0.1 luminance with V as reference on a single 180 second luminance image obtained with the 0.43m robotic telescope T7 of iTelescope.net at AstroCamp Observatory, Nerpio, Spain. Comparison stars are from SDSS whose g and r data were used to calculate V. Image: https://www.flickr.com/photos/watchingthesky/14306766142. S. Howerton

2014 05 31.98512

This transient was observed on 2014 05 31.98512 by Gianluca Masi, remotely using the 17"-f/6.8 corrected Dall-Kirkham robotic unit part of the Virtual Telescope Project facility, at Bellatrix Astronomical Observatory in Ceccano, Italy. 180-seconds exposures, unfiltered, show the source at mag. 17.4 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 09.74; 44.9 (J2000.0, mean residuals of 0.2" on both axes).

2014 05 31.9573

PSN in NGC 5270 detected with 9 minutes exposure images unfiltered. Astrometry: RA 13 42 09.72 Dec +04 15 44.75 (ref stars UCAC2) Photometry: 17.27CR +/-0.08 (USNO A2.0 R Ref stars 161, 175, 177, 180). Observer and measurer: Xavier Bros, ANYSLLUM OBSERVATORY, Àger, Catalonia, Spain. T-350mm. Link to image and further information: http://www.anysllum.com/PSN_NGC5270.jpg

2014 05 31.227

This possible supernova in NGC 5270 was detected with 3 x 10 min images using a clear filter Photometry: Mag 17.90 +/- 0.52 C (V for ref) Astrometry: RA 13 42 09.75 Dec +04 15 44.6 These data were collected by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/14141885337/

2014 06 01.299

Follow-up This possible supernova in NGC 5270 was detected with 15 x 10 min images using a clear filter Photometry: Mag 17.83 +/- 0.56 C (V for ref) Astrometry: RA 13 42 09.75 Dec +04 15 44.6 These data were collected by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: https://www.flickr.com/photos/43846774@N02/14141885337/

2014 06 02.487

PSN J13420972+0415447 = SNhunt253. Object measured 17.1V +/- 0.2 on a single 180 second image in Johnson V obtained with the 0.43m robotic telescope T17 of iTelescope.net at Siding Spring, Australia. Comparison stars are from SDSS whose g and r data were used to calculate V. Image: https://www.flickr.com/photos/watchingthesky/14146704597. S. Howerton