Displaying items by tag: Messier Objects
Messier 1 is a supernova remnant located in Taurus. In 1054, Chinese astronomers recorded a bright new star that faded away over time. For awhile it was the 2nd brightest object in the night sky after the Moon shining at a magnitude of -7. Venus on occasions will only make it to around -4,8 magnitude. Independently discovered by Charles Messier while looking for Halley's Comet, it gave him the ideal to record non-moving objects that could be mistaken for comets. It is also called the Crab Nebula because of a drawing William Parsons made that he thought it resembled a crab.
At the heart of the nebula is a pulsar, which is the remains of the progenitor star that collapsed down to a neutron star. The highly magnetized star is spinning around 30 times a second that creates the pulses of radiation. The progenitor star was thought to be between 9 and 11 solar masses, the existing star is around 1.4 to 2 solar masses and is compressed down to a size less that 30 kilometers across.
Messier 11 is an rich and compact open cluster located in the constellation of Scutum containing an estimated 2900 stars. It borders the northern end of the Scutum Cloud which is a dense section of the visible Milky Way. It's estimated age is between 220 and 250 million years. Like most open clusters, it's stars will eventually disperse through out the Milky Way. It was added to Charles Messier catalog in May, 1764.
Imaged with the ED80CFT refractor and ZWO 1600 MMC mono camera through LRGB filters,
Messier 13, the Great Globular cluster located in the constellation of Hercules. It is one of the brightest and best know globular clusters in the northern hemisphere. The cluster has a diameter of around 145 light years and contains about 300,000 stars.
Discovered by Edmond Halley in 1714, and added to the Messier catalog by Charles Messier in 1764. It is one of the best know and brightest globular clusters visible in the northern hemisphere.
The cluster contains an estimated 300,000 stars stretching across a diameter of 145 light years. Globular clusters tend to be quite old objects with their stars containing very little of the metal elements.
One of the best known northern hemisphere globular clusters containing around 300,000 stars. Globular clusters are are old objects and M13 is estimated to be around 11.5 billion years old based on the amount of heavy metal contents in its stars. Imaged just before a full Moon.
Celebrated the July 4th holiday by imaging one of the brightest and best known globular cluster visible in the northern hemisphere. M13 contains an estimated 300,000 stars. Often called the Great Globular Cluster in Hercules, it is conveniently located in the constellation of Hercules. The cluster was described by Edmond Hally in 1714, and was added to Charles Messier's catalog on June 1, 1764. In 1974 a radio message was sent in the direction of M13 from the Arecibo radio observatory, but don't expect a reply as it would take 25,000 years to get there, and another 25,000 for a reply. Also by that time, both the cluster and the solar system will have moved due to their orbits around the galaxy. Also globular clusters tend to consist of old stars that have very little metal content to form planets that have metals that we find so useful here on Earth.
Imaged with the RC10 scope and the ZWO 1600 MMC mono camera.
M15 is a globular cluster located in the constellation of Pegasus. It consists of an estimated 100,000 stars and has a very dense central core having undergoing a core collapse where stars migrate towards the center. It's age is estimated at 12 billion years and is located 33,600 light years away.
Cataloged by Charles Messier in 1764 in his catalog of comet like objects.
Imaged with the ES127 refractor and Atik314L+ mono ccd camera.
Messier 15, one of the oldest globular clusters around our galaxy, estimated age of 12+ billion years, and a densely compacted core due to core collapse. M15 contains an estimated 100,000 stars. Imaged during first quarter Moon.
M16 is a young open cluster surrounded by an emission nebula, it was made famous by the Hubble image "Pillars of Creation" visible in the center of the nebula. NASA revisits the Eagle Nebula
The nebula has several active star forming regions in the nebula, and the nebula shines by emission light from the young massive O type stars. The cluster is located in the Sagittarius arm at a distance of about 7,000 light years away.
Image taken with the RC10 and ZWO 1600MM monochrome camera.
Messier 16, or often called the Eagle Nebula from the shape of the nebula, or Star Queen Nebula, from the shape of the pillars. The nebula is a star forming region in the constellation of Serpens. The bright cluster of O type stars seen in the right side of the nebula (NGC 6611) are responsible for illuminating the nebula.
The most famous part of the nebula, made famous by a Hubble image is the central spires in the nebula nicknamed the "pillars of creation". The hot white stars of NGC 6611 are gradually the dust structures in the nebula creating the spires. The spires are also locations of new stars being born in the clouds of dust, hence the name. The tallest pillar is approximately 4 light years in length. The entire nebula is located at a distance of 7,000 light years.
Imaged with the ES127 refractor, and Atik 314l+ ccd camera Ha, R/G/B filters with the Ha signal mixed into the red channel to highlight the nebula.