Spiral Galaxy NGC 4384 & Supernova 2000de

An 8minute exposure with an ST-6 CCD camera thru Kopernik's 20-inch F/8.1 Ritchey Chretien Cassegrain telescope. The field of view is about 5x7 arc minutes, with North at the top. Time: 2:51 UT, August 22nd, 2000.

Supernova 2000de:

Discovered: August 10th, 2000, by M. Migliardi, of Tourtour, Haut-Provence, France.

• Magnitude 16.0 at discovery
• Type unknown
• The supernova is about magnitude 16.0 in the Kopernik image.

Follow this Link to a NASA Web site on supernovas. It has a very nice animation and a description of what these objects are.

Spiral Galaxy NGC 4384:

NGC 4384 is in the constellation of Ursa Major. A rough distance estimate for this galaxy is 132 million light years, and at that distance, the diameter would be 50,000 light years.

In a 1998 Astrophysical Journal article, Tadashi Usui and Mamoru Saito noted: " Two major H II regions are seen symmetrically with respect to the galactic center, and diffuse H{alpha} emission surrounds them. In the Hubble Space Telescope image, spiral structure reaches down to the center, and several bright sources, which likely are H II regions, can be seen....".

• NGC 4384
• Magnitude: 13.5
• Constellation: Ursa Major
• RA: 12h 25m 11.9s
• Dec: +54° 30' 17" Epoch 2000
• Size (mins): 1.3' x 1.0'
• Classification: Spiral Galaxy, with conspicuous H II regions.
  

Click below to

George Normandin, KAS

August 23rd, 2000