Daily Archives: January 24, 2015

The Carina Nebula (the Eta Carinae Nebula, NGC 3372)

24 янв


The Carina Nebula (also known as the Great Nebula in Carina, the Eta Carinae Nebula, NGC 3372, as well as the Grand Nebula) is a large bright nebula that has within its boundaries several related open clusters of stars. It contains the two large OB associations Carina OB1 and Carina OB2. Carina OB1 contains the two star clusters Trumpler 14 and Trumpler 16. Trumpler 14 is one of the youngest known star clusters, at half a million years old. Trumpler 16 is the home of WR 25, currently the most luminous star known in our Milky Way galaxy, together with the less luminous but more massive and famous Eta Carinae star system, and HD 93129A. The nebula lies at an estimated distance between 6,500 and 10,000 light years from Earth. It appears in the constellation of Carina, and is located in the Carina–Sagittarius Arm. The nebula contains multiple O-type stars.

The nebula is one of the largest diffuse nebulae in our skies. Although it is some four times as large and even brighter than the famous Orion Nebula, the Carina Nebula is much less well known, due to its location in the southern sky. It was discovered by Nicolas Louis de Lacaille in 1751–52 from the Cape of Good Hope.

Imaging telescopes or lenses: William Optics Megrez 80 APO Triplet
Imaging cameras: Canon EOS T3i
Mounts: Orion EQ 3-2
Guiding telescopes or lenses: Orion 50mm deluxe guidescope
Guiding cameras: QHYCCD QHY5L-II Color
Software: Luc Coiffier’s DeekSkyStacker (DSS),  Photoshop CS6
Accessories: SkyWatcher Dual Axis Motor Drive with ST4
Resolution: 3921×3440
Dates: Jan. 10, 2015
Frames: 8×300″
Integration: 0.7 hours
Avg. Moon age: 19.11 days
Avg. Moon phase: 80.14%
RA center: 161.099 degrees
DEC center: -59.778 degrees
Pixel scale: 1.487 arcsec/pixel
Orientation: 132.756 degrees
Field radius: 1.077 degrees
Locations: Observatório Caseiro Ibituruna, Governador Valadares, Minas Gerais, Brazil
Author: Victor Brasil Sabbagh