M68 - NGC 4590
DSS image of M68
Overlaid DSS image of M68, 30' x 30' with north at top and west to the right

Aladin viewer for the region around M68
h 3404, GC 3128, C 1236-264, GCl 20

Type  Globular Cluster
Magnitude  8.2
Size  12'
RA (2000)  12h 39' 28.1"
Dec (2000)  26° 44' 39" S
Constellation  Hydra
Description  L, eRi, vC, iR, rrr, st 13...
Classification  X
Observing Notes

Andrew Cooper
Mar 14, 2010    Hale Pohaku, HI (map)
15cm f/5 Newtonian, Primero @ 55x

Small, bright, 10' across, just starting to resolve, not particularly condensed at the core

Andrew Cooper
Feb 28, 1998    Las Cienegas NCA, Pima Co., AZ (map)
20cm f/10 SCT

Dense globular, easily resolved with the 12.5mm plossl

Charles Messier
Jan 9, 1790    

Nebula without stars below Corvus & Hydra; it is very faint, very difficult to see with the refractors; near it is star of sixth magnitude."

- Connaissance des Temps, 1781

Rev. T.W. Webb
Hardwick, Herefordshire, England (map)

Globular clusters of stars, well resolved; 12 mg. stars, one red.

- Celestial Objects for Common Telescopes, T. W. Webb, 1917
Other Data Sources for M68
Nearby objects for M68
2 objects found within 120'
HD 109799 HD 110666
Acknowledgements and Credits...

Drawings, descriptions and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission.

Positional and some physical information is from the NASA/IPAC Extragalactic Database (NED) which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration.

Additional object data from the SIMBAD database, operated at CDS, Strasbourg, France.

The Digitized Sky Survey was produced at the Space Telescope Science Institute under U.S. Government grant NAG W-2166. The images of these surveys are based on photographic data obtained using the Oschin Schmidt Telescope on Palomar Mountain and the UK Schmidt Telescope.

Dark nebulae data from E.E. Barnard, A Photographic Atlas of Selected Regions of the Milky Way. Ed. Edwin B. Frost and Mary R. Calvert. Carnegie Institution of Washington, 1927

Object descriptions of Rev. Webb from Celestial Objects for Common Telescopes sixth edition, Rev. T.W. Webb, 1917, edited by Rev T.E.Espin.

NGC & IC object notes from Harold Corwin licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. Additional supplementary material for NGC and IC catalog objects from Courtney Seligman with non-commercial use allowed, found at https://cseligman.com