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Old 31-07-2007, 07:41 AM
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glenc (Glen)
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Join Date: Jun 2005
Location: Terranora
Posts: 4,383
1263 NGC and IC objects

Deep sky objects are not spread evenly around the sky.
Most of the open clusters, "bright" nebulae and planetary nebulae are located along the milky way.
Globular clusters are concentrated around the center of the milky way. (RA 17.8, dec -29)
Galaxies "avoid" the milky way because most of them cannot be seen through it.
The galaxies in Virgo are centered around RA 12.6, dec +14.
This "map" shows the location of 1263 NGC and IC objects south of declination +51.
It shows:
156 open clusters brighter than magnitude 8 (yellow squares)
91 globular clusters brighter than magnitude 10 (orange circles)
655 galaxies brighter than magnitude 11.5 (magenta diamonds)
89 planetary nebulae brighter than magnitude 13, all larger than 0.2' (blue circles)
and all of the 272 "bright" NGC and IC nebulae south of dec+51. (green squares)

The green and yellow squares mark out the U shaped path of the milky way.
The Large Magellan Clouds is at RA 5.4, dec -68.
The Sun will be at RA 9.5, dec +15 at the next new moon which is 13/8/07.
Northern objects in that area (RA 6 to 12) will not be visible then.
It is interesting to look for pairs and groups of objects on this map.

An Excel file with 1263 southern objects is also included.
You can use the filters to select objects. e.g. Gx with Vmag less than 9.
All of these objects, apart from the faint nebulae, are visible in an 8 inch (200mm) telescope.

Reference: http://www.klima-luft.de/steinicke/n...000/Explan.htm
Attached Files
File Type: zip NGCic map.zip (165.1 KB, 40 views)

Last edited by glenc; 31-07-2007 at 06:46 PM.
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