Deep-sky_illustrated_observing_guide.pdf

DEEP SKY OBJECTS

ILLUSTRATED OBSERVING GUIDE

List of 7000 deepsky objects from SAC catalog

List of select 666 deepsky objects with Images

(declination limit: -60 degrees south)

6992

6995

Notes Explanations:

NAME : object common name

RA : right assension coordinate

OTHER : object other name

DEC : declination coordinate

TYPE : object type

U2K : page number in uranometria2000 1st edition

CON : constellation

Class : object class (see explanations)

MAG : object magnitude

ns : number of stars in open cluster

SB : object surface brightness

bs : brightest star in cluster, or central star in planetary nebula

SIZE : object maximum angular size

SAC NOTES : notes taken from SAC database

SAC Class Explanations :

open clusters classes:

Detached, strong concentration toward the center

1: Small range

p: Poor (<50 stars)

II: Detached, weak concentration toward the center

2: Moderate range

m: Moderately rich (50-100 stars)

III: Detached, no concentration toward the center

3: Large range

r: Rich (>100 stars)

IV: Not well detached from surrounding star field

n: nebulocity in center

globular clusters classes:

1: least concentrated ... 12: most concenterated

planetary nebulae classes

1: Stellar

2: Smooth disk (a, brighter center; b, uniform brightness; c, traces of ring structure)

3. Irregular disk (a, very irregular brightness distribution; b, traces of ring structure)

4. Ring structure

5. Irregular form similar to diffuse nebula

6. Anomalous form, no regular structure

galaxy classes

E: elliptical (E0 is roundest to E7 is flattest) ('d'is dwarf, 'c'is supergiant, 'D' has diffuse halo)

S: Spiral ('a' has tightly wound arms, 'b' has moderately wound arms and 'c' has loosely wound arms)

SB: Spiral with central bar

Ir: Irregular

General Notes for main DSO list:

Objects up to magnitude 14m plotted, also objects lacking magnitude.

All Objects plotted are from SAC 7.7 database. Data courtesy of the Saguaro Astronomy Club (saguaroastro.org)

Important note: Objects with Declination lower then -60° (most southern objects) weren't plotted

"NAME" field in bold means: object's image is present in best 666 list

Object's common names / Messier numbers are also marked in bold

General Notes for 666 DSO list

Objects from the following catalogs plotted:

all Herschell 400 objects,

(overall 666 DSOs)

all Messier objects

all Caldwell objects

all SAC's best of NGC objects

some of Orion's Deep Map 600 objects

various objects of interest selected by author (around 100)

Objects with Declination lower then -60° weren't plotted

"OTHER" or "NOTES" fields in bold means: object's common name.

General notes and copyright notices for 666 DSO images:

Most of the Images were taken from NGC/IC Project database (www.ngcic.org)

Negative DSS images were used (Data courtesy of the Digital Sky Survey, www.archive.stsci.edu/dss)

Most of the images were adjusted for brightness / contrast, to prevent saturation during printing

Some of the objects were taken from different web sites: www.hubblesite.org, www.ngc7000.org (Copyright Ole Nielsen),

www.noao.edu (copyright NOAO/AURA/NSF), www.sky-map.org, www.astrofx.com, astrosurf.com (Copyright AstroSurf )

Each page contains 16 thumbnail images, with details for each objects at bottom of the page taken from SAC 7.7 database

Overall around 700 objects are plotted. Objects which appear in images are marked bold in main DSO list.

M 1

M 2

M 3

M 4

M 5

M 6

M 7

M 8

6526

6523

6530

M 9

M 10

M 11

M 12

M 13

M 14

M 15

M 16

M 17

M 18

M 19

M 20

M 21

M 22

M 23

M 24, B92

M18

B92

6603

M 25

M 26

M 27

M 28

M 29

M 30

M 31

M 32

M 33

M 34

M 35

M 36

M35

2158

M 37

M 38

M 39

M 40

M 41

M 42

M 43

M 44

M 45

M 46

M 47

M 48

2438

1435

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