PNV J20214234+3103296 2014 03 31.7899* 20 21 42.34 +31 03 29.6 10.9 U Cyg N 0
2014 03 31.8202
Koichi Nishiyama, Kurume,Japan and Fujio Kabashima, Miyaki,Japan report a discovery of possible nova (mag.= 10.9) in Cyg on two 40-s unfiltered CCD frames taken around 2014 May. 31.78990 UT ( limiting magnitude=13.1 ), using a 105-mm f/4 camera lens (+SBIG STL6303E camera). We have confirmed immediately the appearance of our discovery this PN on five 5-s unfiltered CCD frames taken around 2014 May 31.8202 UT ( limiting magnitude=17.6 ), using a Meade 200R 0.40-m f/9.8 reflector (+SBIG STL1001E camera). (lens magnitude of referred catalogue Hipparcos, others reference catalogue GSC-ACT) Nothing is visible at this location on past survey frames taken on 2014 May 27.781 UT(limiting mag.= 13.4) but we found same obsect 12.4mag. May 30.769 UT (limiting mag.= 13.5) nor on DSS, USNO-B1.0, We have checked in Minor Planets. nearest star in USNO B1.0 has position end figures 42s769, 33"99, distance 7"0, magnitudes B2=17.94 R2=15.41 I=14.56
2014 03 31.8202
CORRECTION in Nishiyama and Kabashima' confirming page month is not May. but Mar.
2014 04 01.1034
This transient was observed on 2014 04 01.1034 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, 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. 20-seconds exposures, unfiltered, show the source at mag. 11.0 (R mags for the reference stars from UCAC-4). We also performed astrometry, getting the following end figures: 42.32; 29.4 (J2000.0, mean residuals of 0.2" on both axes).
2014 04 01.1045
Several low resolution spectra of this transient were obtained on 2014 04 01.1045 by Gianluca Masi, Francesca Nocentini and Patrick Schmeer, remotely using the 14" robotic unit part of the Virtual Telescope Project facility in Ceccano, Italy. For this, we used a 100 lines/mm grating, with a dispersion of 34.5 angstroms/pixel. After co-adding several images, we see clear H-alpha emission.
2014 04 01.18
We managed to make our image and spectrum available here: http://www.virtualtelescope.eu/2014/04/01/pnv-j202142343103296-nova-cygnus-1-apr-2014/