Collinder 21
DSS image of Collinder 21
Overlaid DSS image of Collinder 21, 30' x 30' with north at top and west to the right

Aladin viewer for the region around Collinder 21
Cr 21, C 0147+270, Lund 58, OCl 371

Type  Asterism
Magnitude  8.2
Size  7'
Right Ascension  1h 50'  (2000)
Declination  27° 4' N
Constellation  Triangulum
Classification  III3p
Observing Notes

Andrew Cooper
Nov 13, 2020    Waikoloa, HI (map)
20cm f/6 Newtonian, Cave Astrola @ 76x
Seeing: 5 Transparency: 6 Moon: 0%

A conspicuous grouping of stars easily found while sweeping, a 5' diameter arc of 8-10th magnitude stars defining the western margin of the cluster with a scattering of 10-12th magnitude stars inside that arc
Other Data Sources for Collinder 21
Nearby objects for Collinder 21
5 objects found within 60'
IC 1727 IC 1731 NGC 670
NGC 672 NGC 684
Credits...

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

A complete list of credits and sources can be found on the about page

Collinder 21