sponsored by psychohistorian.org

DOCdb

Deep Sky Observer's Companion – the online database

 

Welcome, guest!

If you've already registered, please log in,

or register an observer profile for added functionality.

List:

log in to manage your observing lists

 browse:

 

 position:

 

 next:

 

 options:

summary

rename

prune

trim

remove

close

copy

combine

plan

bookmark

load

new

delete

marathon

favourite!

Full database:

Entire DOCdb database of 18,816 objects.

 browse:

 position:

Cl Ruprecht 18 (4,606 of 18,816)

 next:

oc gc pln bn dn gx gxcl ast aka lost

Object:

list

bookmark

finder chart

altitude today

altitude (year)

 search:

½°, , in DOCdb


Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/yivumoo/public_html/show_object.php on line 167

show browsing

Cl Ruprecht 18

Cl Ruprecht 18, C 0722-261, Ocl 646

RA: 07h 24m 39s
Dec: −26° 11′ 18″

Con: Canis Major
Ch: MSA:344, U2:319, SA:19

Ref: SIMBAD, DAML02, Archinal&Hynes (2003)

(reference key)

Type: open cluster, 31m

Mag: B=9.9, V=9.4

Size: 7′
PA: ?

Published comments

Moffat, AFJ & Vogt. N. (1975)

Moffat, AFJ & Vogt. N. (1975) "Southern Open Star Clusters IV. UBV-H-beta Photometry of 26 Clusters from Monoceros to Vela." Astron.Astrophys.Suppl., 20, 85-124. [image, table]

"This cluster was included in our program because of its coincidence with the Cepheid AO CMa. Although the POSS charts show that Ru 18 may represent a random window amongst dust clouds, many of the observed stars appear to form a possible group of stars with .. d = 1.03kpc."

Modern observations

Brian Skiff

[~N2383]

25cm - pretty nice cl ~5' diam. unconcen grp of 25 *s @ 95x. brtr m10.5 * on SW edge. cl *s mostly m11.5+. fntr version of sparse wintertime cl. BS, 25Jan1982, Anderson Mesa.

Contemporary observations

Magda Streicher

2006 November 20

Pietersburg

16-inch f/10 SCT (127x, 290x)

It is hard to say what is going on in this very busy field of view. Although I more or less consentrate on a splash of faint stars sharing close together a 8' piece of space. Towards the middle area three stars in a string. The field of view towards the west seems more busy with faint stars in a north to south direction.

Richard Ford

2013 February 8th, Friday

Location:Blesfontein Guest Farm,Sutherland.

Time:2:58am.

Sky Conditions:The most crystal clear sky possible.Dark moon and stars magnitude 6 and fainter are visible with the naked eye.Excellent clean sky,limited star flickering and brilliant objects.

Instrument:12-inch Dobsonian.

This open cluster looks like a misty nebulous glow against a starry field and that most of the stars in this cluster is nearly as bright as each other.This cluster is compact and not at all separated and that most of the stars are in the magnitude range of 11.6 to 11.8.This open cluster measures 4.7'x 3.3'.Chart No.98,NSOG Vol.1.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

Named DSOs

Object search

First search phrase

    and

Second search phrase

Type of object to include:

open cluster
globular cluster
planetary nebula
bright nebula
dark nebula
galaxy
galaxy cluster
asterism & stars
unverified/lost
nova

The Bug Report

DOCdb is still in beta-release.

Known issues, feature requests, and updates on bug fixes, are here:

> Bug Report

Feedback

Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!

> Contact us

Help!

DOCdb is a free online resource that exists to promote deep sky observing.

You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.

> Find out more

Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.