220 Deep Sky Objects

[glenc (Glen)]

220 Deep Sky Objects (DSO)
Listed by Glen Cozens

The Messier catalogue was made by Charles Messier (1730-1817) and Pierre Méchain (1744-1804) in Paris between 1758 and 1781. It contains 40 galaxies, 29 globular clusters, 26 open clusters, 8 nebulae and 4 planetary nebulae. All of them are north of declination minus 35 degrees.

This is an attempt to improve on the Messier catalogue. The attached catalogue covers the whole sky and has equal numbers of clusters and nebulae. It contains 60 galaxies, 40 globular clusters, 40 open clusters, 40 nebulae and 40 planetary nebulae.

The open clusters were chosen using Project Pluto’s Guide Star Charts set to show stars to magnitude 15. The nebulae were chosen by examining images with Aladin. Globular clusters, planetary nebulae and galaxies were chosen using Dr Wolfgang Steinicke’s NGC and IC database. Objects were listed by magnitude then by size and the best were chosen each time. M45 and the LMC were added, they are not in the NGC catalogue.

I observe with a 30cm Dobsonian telescope from NE NSW and have been making DSO lists for more than 40 years. My PhD was on the first three catalogues of southern DSO.

References
https://www.skyatnightmagazine.com/s...ier-catalogue/
https://www.projectpluto.com/
https://aladin.u-strasbg.fr/AladinLite/
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm

[glenc (Glen)]

These are the 68 objects for March, April and May

The columns are
Catalogue. NGC or IC
Number in that catalogue
Messier number

Type OC, GC, Neb, PN or Gxy
Sub-type
Constellation

Name of the discoverer
Year found

Visual magnitude
Length and width in arc-mins

RA and declination in decimal
Months when best seen, SON is Sep, Oct, Nov etc

N+45 is north of dec 45
S-45 is south of dec -45

The data is from
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm

[glenc (Glen)]

These are the 41 objects for June, July and August

See post 2 for details

[glenc (Glen)]

These are the 56 objects for September, October and November
See post 2 for details

[glenc (Glen)]

These are the 55 objects for December, January and February

See post 2 for details

[gaseous (Patrick)]

That's great, thanks Glen. You've given me another list for Astrofest this year. I recall chatting to you about James Dunlop one evening at the last AF as we tried for a few PN's.

[glenc (Glen)]

Originally Posted by gaseous

That's great, thanks Glen. You've given me another list for Astrofest this year. I recall chatting to you about James Dunlop one evening at the last AF as we tried for a few PN's.

Yes we looked at a long list of PN with your 20".

[glenc (Glen)]

Who found the 220 DSO in this list?
Lacaille, Dunlop and John Herschel found most of the southern ones.
This data is from
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm

[EpickCrom (Joe)]

Thanks for the awesome observing lists Glenn This will keep me busy for a while!

[glenc (Glen)]

Originally Posted by EpickCrom

Thanks for the awesome observing lists Glenn This will keep me busy for a while!

Thank you Joe

[Drac0 (Mark)]

Thanks Glen. Been working on a list of my own but your efforts have saved me a lot of work!
Cheers,
Mark

[Hemi]

Awesome!

Thanks very much.

[glenc (Glen)]

Thanks Mark and Hemi

[AstroViking (Steve)]

What the others have said - thanks for lists of objects to look for. (The part I have the most trouble with!)


Cheers,
V

[Averton (P and C)]

That should keep us busy for some time to come. Some might be a bit of a challenge with our 6" scope and Bortle 8 backyard, but what the heck Thanks.

[glenc (Glen)]

Thanks Steve, Clare and Peter. Dark skies and a 10" should show all of them.

[glenc (Glen)]

You should be able to see most of the objects for 6 months now.
MAM JJA (March to August)

Here is a summary.

[Averton (P and C)]

Originally Posted by glenc

Thanks Steve, Clare and Peter. Dark skies and a 10" should show all of them.

Our largest scope is only 6" but we'll try anyway and just see what we can get. Thanks for all your work making these catalogues.

[glenc (Glen)]

I have seen 77 of the 220 in the last couple of mornings.
30 GC, 16 PN, 12 OC, 12 Neb and 7 Gxy.

[EpickCrom (Joe)]

Originally Posted by glenc

I have seen 77 of the 220 in the last couple of mornings.
30 GC, 16 PN, 12 OC, 12 Neb and 7 Gxy.

What a haul Glenn Unfortunately for me it's been clouds and rain for days, with the whole next week looking terrible