220 Deep Sky Objects

[glenc]

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/space-science/messier-catalogue/
https://www.projectpluto.com/
https://aladin.u-strasbg.fr/AladinLite/
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm

[glenc]

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]

These are the 41 objects for June, July and August

See post 2 for details

[glenc]

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

[glenc]

These are the 55 objects for December, January and February

See post 2 for details

[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.

[glenc]

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

[glenc]

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]

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

[glenc]

Thank you Joe

[Drac0]

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]

Thanks Mark and Hemi

[AstroViking]

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


Cheers,
V

[Averton]

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]

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

[glenc]

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

Here is a summary.

[Averton]

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]

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]

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

[Averton]

Clouds, rain and very cold here too. Score = 0 :(

[glenc]

Here are images of the nebulae.
They were made with Aladin and most of them have the same 2 degree field of view.
The file name is the NGC or IC number.
NGC 2467 was not in the original list.

https://link.shutterfly.com/UVsE3i9J8qb

[Averton]

Very nice :thumbsup:

[glenc]

Have seen 160 DSO since I made the list
30 OC, 38 GC, 21 Neb, 29 PN and 42 Gxy

[Averton]

You must have had much better skies than we have had and also been busy.:thumbsup:

[glenc]

Here are Shutterfly images of all the objects.
The file name is the NGC or IC number.
The OC and GC images were made using the red ESO Online Digitized Sky Survey and a 30' field.
The PN and Gxy images were made using the red ESO Online Digitized Sky Survey and a 20' field.
The nebulae images were made with Aladin and most of them have the same 2 degree field of view.
https://link.shutterfly.com/UVsE3i9J8qb

https://archive.eso.org/dss/dss
https://aladin.u-strasbg.fr/AladinLite/

[gb44]

Thanks for the lists, great stuff.
Could they be made into a sticky, please.

Glenn

[EpickCrom]

Fantastic work Glenn. This list in very valuable to me:thumbsup:

[Averton]

:thumbsup:

[glenc]

50 GC, 50 PN and 101 Gxy listed by mag and by size
The yellow ones are in both the mag and size list

GC and Gxy data from Dr Steinicke
http://www.klima-luft.de/steinicke/ngcic/ngcic_e.htm

PN data from the
Strasbourg-ESO Catalogue of Galactic Planetary Nebulae



(https://www.researchgate.net/publication/234526787_Strasbourg-ESO_Catalogue_of_Galactic_Planetary _Nebulae)

[EpickCrom]

I'm bookmarking that site. Thanks Glenn:thumbsup: