Central Bureau for Astronomical Telegrams
CBAT "Transient Object Followup Reports"
PSN J22241321+3605008
PSN J22241321+3605008 2013 12 13.3841* 22 24 13.21 +36 05 00.8 17.1 U 14W 14S N7276 I 0
2013 12 13.384
Image = http://www.k-itagaki.jp/images/7276.jpg
2013 12 13.484
Discovered by K. Itagaki, Yamagata, Japan, on an unfiltered CCD frame taken on 2013 December 13.384 UT using 0.50-m f/6.8 reflector at the Takanezawa station, Tochigi-ken, under the limiting magnitude= 18.5 who writes nothing is visible at this location on his past frames including the most recent frame taken on 2013 Nov. 28.480 UT (limiting mag.= 18.0) using same telescope. PSN was confirmed on the following frames taken by same telescope and no motion shows during his confirming. Also T. Noguchi, Chiba-ken, has observed Mag.= 17.2 with 0.23-m f/6.3 Schmidt Cassegrain + unfiltered CCD (limit mag.= 18.5), who writes an image posted at http://park8.wakwak.com/~ngc/images/PSNinNGC7276.jpg.
2013 12 13.773
This transient was observed on 2013 12 13.773 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 17"-f/6.8 robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. 120-seconds exposures, unfiltered, show the source at mag. 16.3 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 13.16s; 00.8" (J2000.0, mean residuals of 0.2" on both axes).
2013 12 13.8432
Mag.: 16.6(V) R.A.: 22 24 13.15; Decl.: +36 05 00.7 (2000.0). Reference: PPMXL Observer: Massimiliano Martignoni - Observatory: Stazione Astronomica Betelgeuse (B75), Magnago, Italy Telescope: Schmidt-Cassegrain 0.25m-f/10.0 - CCD: KAF0261E
2013 12 14.14765
Mag.=16.4, R.A.=22 24 13.21, Decl=+36 05 00.7 (UCAC4), remotely using a 0.25-m f/3.4 hyperbolic astrograph + unfiltered CCD (SBIG ST-10XME) at the RAS Observatory near Mayhill, NM, U.S.A.. Position and magnitude were measured on an image composed from 6-frames which were taken by each 120-seconds exposure under the limiting magnitude = 18.0. Observer T. Yusa, Osaki, Japan. Link to image: http://space.geocities.jp/yusastar77/supernova/PSNinN7276_131214.htm
2013 12 15.82408
This object was observed by Federica Luppi and Luca Buzzi from Schiaparelli Observatory, Varese, Italy. In a stack of images totalling 5 minutes of unfiltered exposure time, the object has position end figures 13s.19, 00".7 and magnitude 16.6. Image posted at URL http://www.astrogeo.va.it/pub/TOCP/PSN_N7276.jpg
2013 12 16.081
This possible supernova in NGC 7276 was detected with 3 x 10 min images using a clear filter Photometry: Mag 16.93 +/- 0.27 C (V for ref) Astrometry: RA 22 24 13.21 Dec +36 05 0.07 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/11532899014/
2013 12 17.060
Follow-up This possible supernova in NGC 7276 was detected with 3 x 10 min images using a clear filter Photometry: Mag 16.84 +/- 0.34 C (V for ref) Astrometry: RA 22 24 13.21 Dec +36 05 0.06 These data were collected remotely by Joseph Brimacombe, Coral Towers Observatory, Cairns, Australia. Link to image and further information: http://www.flickr.com/photos/43846774@N02/11532899014/
