Category: Star Clusters

Messier 62 in Ophiuchus

Hello,

I’d like to share my sketch with you.
Object Name: Messier 62
Object Type: Globular Cluster
Location: Poltava, Ukraine (49.52N, 34.57E)
Date: 2011 Jun 04/05
Media: graphite pencil on white paper, photographed and inverted colours, some post-processing in ACDSee
Comments:
viewed with 20×90 binoculars;
Bortle class 5, no significant light pollution in southern direction;
clear skies, very good transparency, however some haze above the horizon might be existed, ZNELM near 6.1 mag;
the object is not so easy for my latitude, rising no higher than 10 degrees

—
Sincerely,
Roman Kostenko
Society of amateur astronomers in Poltava, Ukraine
—
mailto:poltava-astro@yandex.ua
website http://astronomy.pl.ua

M92 Undervalued Younger Sister

Hallo!
This is my sketch of Messier 92 – globular cluster in Hercules. It > is undervalued younger sister of great M13 😉
But very intersting.

Object: Messier 92
Date: May 27, 2011.
Place: Banica, Poland
Equipment: SCT 5″ with SWAN 20mm
Magnification: 62,5x
Media: Graphite pencil, inverted, tooling with PS
Author: Aleksaner Cieśla (Wimmer)

Small, Bright Ball in the Scorpion

Greetings!
This is my sketch of Messier 80 – globular cluster in Scorpion. In my 5″ scope cluster is small and dense.
Cluster has interesting bright core.

Object: Messier 80
Date: May 26, 2011.
Place: Banica, Poland
Equipment: SCT 5″ with SWAN 20mm
Magnification: 62,5x
Media: Graphite pencil, inverted, tooling with PS
Author: Aleksaner Cieśla (Wimmer)

Heart of the Orion Nebula

Observer: Saeed Zohari
Date: Dec 29, 2010
Time: 20:40 (Tehran: +03:30 UTC)
Location: Tehran ( Lat.: 35° 43.158’N, Long.: 51° 30.616’E, Elev.: 1278m)
Optic: Telescope: Maksutov 102mm Focal Length: 1300mm
Eyepiece: 15mm 66d UltraWide
Object: Trapezium Cluster in the heart of the Orion Nebula
Object Type: Cluster and Nebula
Media: white pencil and black paper

Description:
The Trapezium, or Orion Trapezium Cluster is a tight open cluster of stars in the heart of the Orion Nebula, in the constellation of Orion. It was discovered by Galileo Galilei. On February 4, 1617 he sketched three of the stars (A, C, D), but missed the surrounding nebulosity. The fourth component (B) was identified by several observers in 1673, and several more components were discovered later, for a total of eight by 1888. Subsequently several of the stars were determined to be binaries. Telescopes of amateur astronomers from about 5 inch aperture can resolve six stars under good seeing conditions.
The Trapezium is a relatively young cluster that has formed directly out of the parent nebula. The five brightest stars are on the order of 15-30 solar masses in size. They are within a diameter of 1.5 light-years of each other and are responsible for much of the illumination of the surrounding nebula. The Trapezium may be a sub-component of the larger Orion Nebula Cluster, a grouping of about 2,000 stars within a diameter of 20 light-years.

Christmas in Monoceros

Though it’s not the time of the Holidays, I managed to sketch down this nice open cluster just before Christmas.
40x magnification showed the full cluster in my 80/400 refractor, which made me happy.

I hope you enjoyed it, too!

Object Name (NGC 2264 OC Mon)
Object Type (Open Cluster)
Location (Tiszaújváros, Hungary)
Date (10th December, 2010)
Media (graphite pencil, finalized using felt tip pen)