MY DEEP SKY DESCRIPTIVE CATALOG
ON OBJECTS I HAVE SEEN:

Before you choose between galaxies,clusters and nebulae,let me explain how the header of each object is constructed:
First comes the New General Catalog NGC number:
Below comes a line describing the conditions that were present while viewing this object in the following text format:
DATE-APERTURE-SKY'S CONDITION-OBSERVING SITE'S NAME-ALTITUDE-TEMPERATURE

EXAMPLE:
---------------
NGC520:
3/2/92-10-3-VOULA-130m-8C
In this example "3/2/92" is the date I've seen the object.In Greece we put the day first and the month second,so the above date is the 3rd of February.

***Number "10" is the aperture area of the telescope I used to view the object,in inches.
***Number "3" is the sky's quality grade in the following manner:
_______5-excellent seeing.Views seen only from the highest mountains and outer space.Pitch black skies and thousands of visible stars and nebulae.
_______4-very good seeing.The closest city lies more than 100 miles away,and the stars look so bright,you think they are capable of casting shadows on the ground.
_______3-good seeing.The milky way is clear and the limiting magnitude around 6.5.
_______2-poor seeing.The summer milky way is barely visible,and stars to magnitude 5.5
_______1-very poor seing.This is the typical sky from inside the cities-lights.We call this "light pollution".Only a dozen of the brightest stars are visible.
The observing site's name follows."Voula" is a suburb of Athens-Greece.
***"130m" is the sites altitude above sea-level in meters and
***"8C" is the ambient temperature in the Celsius scale.
Now you are ready to choose between the following kinds of selected deep sky objects:
1) OPEN CLUSTERS:
2) GLOBULAR CLUSTERS:
3) DIFFUSE NEBULAE:
4) PLANETARY NEBULAE:
5) GALAXIES: