M46 Open Cluster in Puppis and NGC 2438 Planetary Nebula

            Messier 46 (M46) is an open star cluster located in the southern constellation Puppis, the Stern. It occupies an area of 27 arc minutes of apparent sky, almost the size of the full Moon, and has a spatial diameter of 30 light years.

Messier 46 is a relatively bright, large cluster containing about 500 stars. About 150 of its members are of magnitude 10 to 13 and the brightest stars belong to the spectral class A0. These stars are about 100 times more luminous than the Sun. The single brightest star in M46 has a visual magnitude of 8.7.
The cluster’s estimated age is 300 million years. 

The cluster has an apparent magnitude of 6.1 and lies at an approximate distance of 5,400 light years from Earth. It has the designation NGC 2437 in the New General Catalogue.

The planetary nebula NGC 2438 appears superimposed on M46 and is located about 7 arc minutes northeast of the cluster’s centre. The nebula is believed to lie in the foreground, at a distance of about 2,900 light years from Earth. 

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Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA
Mount: SkyWatcher EQ6-R Pro
 
Controller: ZWO ASIAIR Plus
Main Camera: ZWO ASI533MC Pro at -10C
Filter: ZWO UV/IR Cut filter 1.25"
Filter Wheel: ZWO EFW 5 Mini
Focal reducer: TS Optics 0.63x
Focuser: ZWO EAF
Guide Camera: ZWO ASI174MM Mini guidecam
Guide via: ZWO OAG
 
Stacked from:
Lights 44 at 60 seconds, gain 101, temp -10C
Darks 30 at 60 seconds, gain 101, temp -10C
Flats 30 at 40 ms, gain 101, temp -10C
Dark Flats 30 at 40ms gain 101 temp -10C
 
Bortle 4 sky.
Integrated the saved frames in Astro Pixel Processor.
Processed in PixInsight
Labels added in Photoshop CS4
   

Taken on: June 3, 2024

Tags:

M46

NGC2437

Cluster

Puppis

NGC2438

Planetary

Nebula

zwo

zwooag

zwoasi533mcpro

zwoasiairpro

asi174mmmini

asi533mcpro

Celestron

c11

c11-a

c11a-xlt

SkyWatcher

EQ6-R

eq6r-pro « less

Sets appears in: • Astronomy Photos

Stats: 19 views

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