Hentunen and Nissinen photographed the supernova SN 2010U 6.2.2010 with GRAS1 remote telescope (see CBET 2161). The supernova is located in the galaxy NGC 4214. The supernova was discovered by Koichi Itagaki team. The brightness of the SN 2010U was about 16.6CR magnitudes.
Arp299 (NGC3690) is combine of two merging galaxy. Due this, there are lot of areas where dust is condensed and where supernovae occurs. At the moment of this photograph there are two supernovae in the Arp299, SN 2010O and SN 2010P. The SN 2010P was discovered by researchers Seppo Mattila and Erkki Kankare by using the […]
Supernova SN 2009nr confirmation picture was takne with the GRAS09-telescope (CBET 2111). The confirmation picture of the SN 2010B (CBET2115) was taken in Taurus Hill Observatory.
Veli-Pekka Hentunen and Markku Nissinen started the new observing season by discovering the supernova SN 2009iy. This discovery was made 15th of August from the galaxy UGC 8520. At the time of the discovery the supernova SN 2009iy was only 17.9R magnitudes bright. The confirmation pictures were taken by Arto Oksanen (Hankasalmi Observatory, Finland) 19th of […]
Superova SN 2009bw is very dim, about 17.5CR magnitudes. This photograph was taken by Markku Nissinen and Veli-Pekka Hentunen 19.8.2009. You can compare the brightness change in the second picture.
Phographer: Veli-Pekka Hentunen SN 2009bw
Markku Nissinen and Veli-Pekka Hentunen took confirmation picture from the supernova SN 2009gt 26.06.2009 by using the RAS Observatory (Mayhill New Mexico) remote telescope . This observation was published in the CBET 1862.
Markku Nissinen and Veli-Pekka Hentunen took confirmation picture from the supernova SN2009fi 31.05.2009 by using the RAS Observatory (Mayhill. New Mexico) remote telescope. This observation was published in the CBET circular 1821
The GRB090530 is faintly visible in the picture below. This picture was taken with GRAS002 telescope, New Mexicossa. The brightness of the GRB is about 19.2CR and this observation has been published in GCN circular nr. 9442. Observers: Markku Nissinen and Veli-Pekka Hentunen.