M5-Globular cluster

Submitted by: sta kaly at Thu Jun 15 20:16:01 2006 UTC

M5 is about 27,000 light years away and if the Sun were at this distance, it would be a magnitude 19 star, only visible in long exposure photographs. The reason we see M5 at all is because it contains a large population of very large red giant stars, each of which is several thousand times brighter than the Sun.; The globular cluster M5, contains roughly 100,000 stars.; Date: 05/16/05; Location: Thessaloniki,Greece; Conditions: Light Pollution at the center of the city; Optics: Meade LX200 SCT 8"; Mount: equatorial; Camera:CCD Meade 416XTE ; Guiding: No; Exposure: LRGB: Luminance: 100X1min; RGB: 10:10:10 minutes; e-mail: stakaly2002@yahoo.com

 

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M57-Ring Nebula in Lyra

Submitted by: sta kaly at Fri Jun 23 18:58:01 2006 UTC

M57 is located in Lyra about midway between the stars Beta and Gamma Lyrae. Its Magnitude 8.8 visual brightness .Planetary nebulae are formed in the dying stages of a star when the core fusion reactions decline to the extent that the star's structure cannot be supported - gravity forces the outer part of the star to collapse inwards, causing the inner part to condense and heat up. The intense build up of pressure and radiation causes the outer shell to 'explode' and be driven away. The intense stellar wind causes the surrounding gases to ionize in bright colours. The core remnant at the centre of M57 was once a star of even greater mass than the Sun. Having ejected its outer layers into space, it is destined to die as a tiny white dwarf star, about the size of the Earth. Planetary nebulae are in fact very common in our galaxy, . The Ring Nebula is about 2,000 light-years from Earth and has a diameter of about one light-year.

Date: 08/17/04; Location: Thessaloniki,Greece; Conditions: Light Pollution at the center of the city; Optics: Meade LX200 SCT 8"; f Mount: equatorial; Camera:CCD Meade 416XTE ; Guiding: No; Exposure: LRGB: Luminance: 200X1min; RGB: 20:20:20 minutes; e-mail: stakaly2002@yahoo.com

M81 galaxy in Ursa Major

Submitted by: sta kaly at Wed Jun 21 08:25:01 2006 UTC

The constellation of Ursa Major is the site of a beautiful spiral galaxy known as M81.It is a bright object, at magnitude 6.8, and can be easily located with any optical instrument.M81 is the brightest member of a group of galaxies called the M81 group and is located approximately 12 million light years from Earth. Date: 03/29/04; Location: Thessaloniki,Greece; Conditions: Light Pollution at the center of the city; Optics: Meade LX200 SCT 8"; Mount: equatorial; Camera:CCD Meade 416XTE ; Guiding: No; Exposure: LRGB: Luminance: 150X1min; RGB: 15:15:15 minutes; e-mail: stakaly2002@yahoo.com

NGC891-Edge-On galaxy

Submitted by: sta kaly at Thu Jun 15 21:01:01 2006 UTC

NGC 891 is an edge-on spiral galaxy located in the Constellation Andromeda at an approximate distance of 30 million light-years. It is rare to view a galaxy edge-on, and perhaps our own Milky Way would resemble this image from such a distance. The dark dust lane bisecting the galaxy is clearly visable, as is the nuclear bulge. The mass of this galaxy is estimated to be 140-billion suns. Date: 03/03/05; Location: Thessaloniki,Greece; Conditions: Light Pollution at the center of the city; Optics: Meade LX200 SCT 8"; Mount: equatorial; Camera:CCD Meade 416XTE ; Guiding: No; Exposure: LRGB: Luminance: 80X1min; RGB: 10:10:10 minutes; e-mail: stakaly2002@yahoo.com

M42-Great Orion Nebula

Submitted by: sta kaly at Tue Jun 13 21:58:01 2006 UTC

The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula with a greenish hue and is situated below Orion's Belt. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of about 1,600 light years away, and is the closest region of stellar formation to Earth. The M42 nebula is estimated to be 30 light years across. The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary discs, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula. Date: 10/08/04 Location: Thessaloniki,Greece Conditions: Light Pollution at the center of the city Optics: Meade LX200 SCT 8" Mount: equatorial Camera:CCD Meade 416XTE Guiding: No Exposure: LRGB: Luminance: 60X10sec; RGB: 4:4:4 minutes e-mail: stakaly2002@yahoo.com

M51-Whirlpool galaxy

Submitted by: sta kaly at Tue Jun 13 20:41:01 2006 UTC

M51, the 'Whirlpool Galaxy' in Canes Venatici is famous for its beautiful spiral structure, The distance is estimated to be about 37 million light years. The diameter is approximately 100,000 light years and the total mass is estmated to be the equivalent of 160 billion suns. Date: 08/16/04 Location: Thessaloniki,Greece Conditions: Light Pollution at the center of the city Optics: Meade LX200 SCT 8" Mount: equatorial Camera:CCD Meade 417XTE Guiding: No Exposure: LRGB: Luminance: 100X1minute; RGB: 15:15:15 minutes e-mail: stakaly2002@yahoo.com

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