Combination of 15, 1 minute images unfiltered.
SBIG STL-1001E CCD. 20" f/6.8 Dall-Kirkham cassegrain telescope at prime focus.
| Object Type | Open Cluster |
| Constellation | Puppis |
| Magnitude | 6.7 |
| Size | 12.0' x 12.0' |
Number 104 in the Herschel 400 list is NGC 2423. This is a fairly large and scattered open cluster of moderately bright stars in Puppis. Against the rich background of the Milky Way, it is almost lost in the image above.