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Contains:  NGC 225
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The Sailboat Cluster, 


            Antonio F. Sánchez
The Sailboat Cluster

Technical card

Resolution: 2455x1800

Dates:Nov. 26, 2013Nov. 27, 2013Nov. 29, 2013Dec. 2, 2013

Optec 50mm B: 19x600" -25C bin 1x1
Optec 50mm G: 15x600" -25C bin 1x1
Optec 50mm L: 68x600" -25C bin 1x1
Optec 50mm R: 19x600" -25C bin 1x1

Integration: 20.2 hours

Avg. Moon age: 25.29 days

Avg. Moon phase: 23.22%

Bortle Dark-Sky Scale: 2.00 job: 136731

RA center: 10.829 degrees

DEC center: 61.911 degrees

Pixel scale: 1.368 arcsec/pixel

Orientation: -178.645 degrees

Field radius: 0.578 degrees


When Caroline Herschel discovered this cluster on September 23, 1783, she added it to her list as No. 11 VdB 4 is a reflection nebula associated with the very young open star cluster NGC 225 which is often called the Sailboat Cluster. The Sailboat name seems to be due to Rod Pommier in an article for a well know astronomical magazine.The nebula may be the remains of the cloud that formed the cluster. Although estimates vary dramatically, open cluster NGC 225 has been estimated to be anywhere from half million to ten millions years old , thus making this widely dispersed cluster one of the youngest open clusters in the Milky Way. Links:



Antonio F. Sánchez
License: None (All rights reserved)

Sky plot

Sky plot


The Sailboat Cluster, 


            Antonio F. Sánchez