DSS image of IC2157
Digitized Sky Survey image of IC2157, 15' x 15' with north at top and west to the right

DSS image of IC2157
Overlaid DSS image of IC2157, 15' x 15' with north at top and west to the right
Cr 80, Lund 204, Tr 4

Type  Open Cluster
Magnitude  8.4
Size  6'
RA (2000)  6h 4' 47.6"
Dec (2000)  24° 4' 16" N
Constellation  Gemini
Description  Cl, S, about 20 F stars

Observing Notes

Andrew Cooper
30 Dec 2015 Waikoloa, HI (map)
28cm f/10 SCT, NexStar 11" Gypsy @ 233x

An indistinct cluster in heavy Milky Way starfield, an obvious asterism of six stars at the center matches the DSS image, bright, sparse, large at 10' in diameter, otherwise unremarkable (Archinal indicates this is probably an actual cluster and confirms the discovery description matches the modern coordinates)
Other Data Sources for IC2157
Nearby objects for IC2157
Acknowledgements and Credits...

Drawings, descriptions and CCD photos are copyright Andrew Cooper unless otherwise noted, no usage without permission. Use for non-profit and educational reasons is generally given on request.

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.