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Contains:  Cone nebula, Christmas Tree cluster, NGC 2264, The star 15Mon
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NGC 2264 (The Christmas Tree Cluster and Cone Nebula)

Technical card

Resolution: 3292x2467

Dates:Feb. 11, 2019Feb. 13, 2019Feb. 14, 2019Feb. 15, 2019

Astrodon HA 36mm - 5nm: 14x600" -20C bin 1x1
Astrodon LUM 36mm - Gen2 E -Series Tru-Balance: 17x300" -20C bin 1x1
Astrodon Olll 36mm - 3nm: 12x600" -20C bin 1x1
Astrodon Sll 36mm - 5nm: 11x600" -20C bin 1x1

Integration: 7.6 hours

Darks: ~50

Flats: ~50

Bias: ~100

Avg. Moon age: 8.24 days

Avg. Moon phase: 58.70% job: 2550647

RA center: 100.245 degrees

DEC center: 9.736 degrees

Pixel scale: 1.575 arcsec/pixel

Orientation: 9.191 degrees

Field radius: 0.900 degrees

Locations: Healey "Utahopia" Observatory, Kaysville, Utah, United States

Data source: Own remote observatory


The Christmas Tree Cluster (NGC 2264) is the bright, open cluster of stars in the center of the image. It sits in a region of emission nebulosity, which includes the famous Cone Nebula (towards the bottom). Both the Christmas Tree Cluster and the Cone Nebula are in the constellation of Monoceros, found just to the east of Orion. This cluster is approximately 2,500 light years away and was discovered by William Herschel in 1784. I would have liked to gather more data with this image but I have been so limited because of weather this winter, I got a little impatient.



Randal Healey
License: None (All rights reserved)

Sky plot

Sky plot


NGC 2264 (The Christmas Tree Cluster and Cone Nebula), 


            Randal Healey