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:

NGC 2215 (4,163 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

show browsing

NGC 2215

NGC 2215, Cl Collinder 90, C 0618-072, COCD 94, VII 20, h 386, GC 1399

RA: 06h 20m 48s
Dec: −07° 17′ 0″

Con: Monoceros
Ch: MSA:275, U2:272, SA:11

Ref: SIMBAD, Collinder (1931), DAML02, Archinal&Hynes (2003)

(reference key)

Type: open cluster, 22m

Mag: B=8.85, V=8.45

Size: 7′
PA: ?

Historical observations

William Herschel (c.1784)

Synonyms: H VII-020

Discovered in 1785 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "a beautiful cluster of pretty compressed and equally scattered stars, 10' or 12' diameter."

Published comments

Trumpler, R.J. (1928)

Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 8.5' and the class as 2 2 p.

Raab, S. (1922)

Raab, S. (1922) A research on open clusters. Lund Medd. Astron. Obs. Ser. II, 28, 1.

Discussed, based of F-A plates.

Melotte, P.J. (1915)

A catalogue of star clusters shown on Franklin-Adams chart plates. Mem.R.A.S., 60(5), 175-186.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 8.5 mag open cluster.

Modern observations

Ancient City Astron.Club (1980)

Listed by the Herschel Club, described as "circular in shape, faint stars with a brighter star seen to one end, 10 stars counted, tightly grouped. 6-inch, 48x."

Reeves, Ken

Ken Reeves, in "SACNEWS On-line for March 1997", observing with a 10-inch f/4.5 scope, notes: "NGC 2215 (06 21.0 -07 17) At 70x, I saw this cluster as pretty big, somewhat bright, not very rich or condensed. There were 2 levels of stars with a star count of about 25 stars. The cluster is triangular or arrow head in shape pointing to the E."

Tom Lorenzin

Tom Lorenzin, in the electronic version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "9M; 8' diameter; large and rich; 25-plus 11M and dimmer members; midway and S of a line between Beta MON and Gamma MON."

Mitsky, Dave (IAAC)

Location: ASH Naylor Observatory, Lewisberry, PA

Date: 12/27/97

Conditions: Seeing - fair, Transparency - good, Limiting magnitude - 5.0

Instrument: 17" f/15 classical Cassegrain

Ocular: 2" 32mm Konig-II (202x)

This compact Herschel 400 open cluster lies between the excellent triple star Beta Monocerotis and Gamma Monocerotis. It has a somewhat diamond-like shape and consists of 10 or more stars varying in brightness.

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "is bright, large, pretty rich, round and compressed at 165X. I counted 42 stars, some in nice chains. Seen in the 10X50 binoculars."

Steve Coe (Glendale, Arizona, USA) observing with a 13.1-inch f/5.6 reflector, writes in The Webb Society Nebulae and Clusters Section Report No. 11, January 1993: "Forty-two stars counted in this bright, large, round and compressed cluster. Some stars in nice chains at x165. Also seen in 10x50 binoculars."

Contemporary observations

Tom Bryant

2010 2 20 21:56:45

Observing site: Little Tycho Observatory

Telescope: C-8

[6h 21m 0s, -7 17' 0"] A scattering of around 10 8-10.5mv stars with about 25 fainter ones misting around them.

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.