Hemisphere:  Northern  ·  Constellation: Auriga (Aur)  ·  Contains:  M 38  ·  NGC 1912
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M38 - The Starfish Cluster, 



    
        

            Damien Cannane
M38 - The Starfish Cluster
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M38 - The Starfish Cluster

Getting plate-solving status, please wait...
M38 - The Starfish Cluster, 



    
        

            Damien Cannane
M38 - The Starfish Cluster
Powered byPixInsight

M38 - The Starfish Cluster

Technical card

Imaging telescopes or lenses: Celestron Nexstar Evolution 8

Imaging cameras: Canon EOS Rebel T6

Focal reducers: Meade f6.3 focal reducer/field flattener


Dates:Feb. 18, 2017

Frames: 18x30" (9')

Integration: 9'

Avg. Moon age: 21.86 days

Avg. Moon phase: 53.03%


Basic astrometry details

Astrometry.net job: 1469687

RA center: 05h28m42s

DEC center: +35°4601

Pixel scale: 1.929 arcsec/pixel

Orientation: 302.340 degrees

Field radius: 0.512 degrees


Resolution: 1470x1222

Description

Messier, also known as the Starfish Cluster, is an open star cluster located in the northern constellation Auriga.

It was discovered by Giovanni Batista Hodierna before 1654 and independently found by Le Gentil in 1749. M36 and M37, also discovered by Hodierna, are grouped together with M38 at a distance of about 3,420 light years away from Earth.

The cluster's brightest stars form a pattern resembling the Greek letter Pi or, according to Webb, an "oblique cross." At its distance of 4,200 light years, its angular diameter of about 20' corresponds to about 25 light years, similar to that of its more distant neighbor M37. It is of intermediate age (about 220 million years, according to Sky Catalog 2000) and features a yellow giant of apparent magnitude +7.9 and spectral type G0 as its brightest member. This corresponds to an absolute magnitude of -1.5, or a luminosity of 900 Suns. For comparison, the Sun would appear as a faint magnitude +15.3 star from the distance of M38.

Comments

Revisions

  • M38 - The Starfish Cluster, 



    
        

            Damien Cannane
    Original
  • M38 - The Starfish Cluster, 



    
        

            Damien Cannane
    B
  • Final
    M38 - The Starfish Cluster, 



    
        

            Damien Cannane
    C

Sky plot

Sky plot

Histogram

M38 - The Starfish Cluster, 



    
        

            Damien Cannane

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