Posts Tagged ‘Galaxy’

Supernova PSN J07174570 in galaxy NGC 2357

Supernova PSN J07174570 was discovered by T. Noguchi on 2/5/15 in spiral galaxy NGC 2357 in the constellation Gemini. It is a Type Ia supernova and is currently at magnitude 14.2 brightening from the discovery magnitude of 15.7


Image taken 7/5/15 9.21pm New Mexico time (UTC -6) on iTelescope T11 20″ Planewave CDK 508mm and FLI ProLine PL11002M camera. RA: 07h 17m 42.0s DEC: 23° 21′ 00″ (J2000). 5 x 180 sec luminance. Processed in Maxim DL5, DeepSkyStacker 3 and Adobe Photoshop CS2.


Supernova SN2015F in Galaxy NGC 2442 28-3-15

March 28, 2015 Leave a comment


I fancied a change of scenery after all of the recent solar activity of various sorts and ventured south of the equator this time. As many of you who read this blog will know I often like to take images of supernovae which briefly appear in distant galaxies and the current brightest supernova is SN2015F. I reserved some time at the iTelescope Siding Spring observatory in Australia and used their half metre T31 Planewave telescope to capture this image.

Supernova 2015F was discovered on 9/3/15 by Berto Monard. It is a Type Ia currently at magnitude 13.3 and is located within the intermediate spiral galaxy NGC 2442, more commonly known as the Meathook Galaxy, in the constellation Volans (southern hemisphere). The Meathook Galaxy lies 50 million light years away and was first discovered by John Herschel.

Type Ia supernovae are fairly common in galaxies with old star populations and are really useful for determining distances between objects and even the age of the universe. Type Ia’s are the result of a white dwarf star exploding in a binary star system due to complex gravitational interactions between the white dwarf and a much larger companion star. The white dwarf grows to approximately 1.4 times the size of the Sun and then becomes unstable and explodes, destroying the star completely.

Imaged 28/3/15 10.28pm Australia time (11.28am UTC) on iTelescope T31 CDK 500mm Planewave with FLI-PL09000 camera. 3×300 sec, Bin 1, Luminance, RA: 07h 36m 18.0s DEC: -69° 31′ 59″ (J2000). Processed in MaxImDL5, DeepSkyStacker 3 and Photoshop CS2.