Johann Louis Emil Dreyer

Obituary: MNRAS 87, 251 (1927); Obs. 49, 293 (1926); PASP 38, 400 (1926); Pop. Astr. 35, 325 (1927)

Dreyer found 20 NGC-objects; 17 were new. He also discovered IC 990, a galaxy in Bootes. All objects were found with Lord Rosse's 72" reflector at Birr Castle. 15 objects are non-stellar. Dreyer found most of the galaxies in the NGC 4005-group at the border of Leo/Come Berenices. NGC 3069 is IC 580 of Javelle and the galaxy NGC 3698 is NGC 3695, discovered by Ball in 1867 with the 72".

D N NI Y M D Ap I T Discoverer Observer Con Type S ID Author Title Source List
1 N 372 1876 12 12 72,0 Rl v     PSC *3 7 NGC 370 (d'Arrest 7.10.1861) Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 373 1876 12 12 72,0 Rl v     PSC E0 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 1195 1877 1 8 72,0 Rl v     ERI E-S0 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 1276 1876 12 12 72,0 Rl v     PER *2 9   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
  N 1277 1876 12 12 72,0 Rl v Parsons L. 4.12.1875   PER S0-a 1   Parsons L. Observations of Nebulae and Clusters of Stars 1848-1878  Scient. Trans. Roy. Dublin Soc. Vol. II, 1-178 (1880)  
1 N 1279 1876 12 12 72,0 Rl v     PER S 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 1281 1876 12 12 72,0 Rl v     PER E5 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 1446 1877 1 8 72,0 Rl v   Tempel 1882 ERI * 9   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
  N 2054 1877 1 13 72,0 Rl v Bond 6.10.1850   ORI *4 9   Parsons L. Observations of Nebulae and Clusters of Stars 1848-1878  Scient. Trans. Roy. Dublin Soc. Vol. II, 1-178 (1880)  
  N 2806 1876 3 22 72,0 Rl v d'Arrest 17.2.1862   CNC * 9   Parsons L. Observations of Nebulae and Clusters of Stars 1848-1878  Scient. Trans. Roy. Dublin Soc. Vol. II, 1-178 (1880)  
1 N 3069 1877 3 15 72,0 Rl v     LEO S0? 1 IC 580 (Javelle 22.3.1892) Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 3698 1876 3 18 72,0 Rl v     UMA SBbc 7 NGC 3695 (Ball 31.3.1867) Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 N 4009 1878 4 26 72,0 Rl v     LEO * 9   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) i
1 N 4011 1878 4 26 72,0 Rl v     LEO S0 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) e
1 N 4015 1878 4 26 72,0 Rl v     COM Sc 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) b
1 N 4018 1878 4 26 72,0 Rl v     COM Sab 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) k
1 N 4021 1878 4 26 72,0 Rl v     COM E3 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) d
1 N 4022 1878 4 26 72,0 Rl v     COM S0 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) l
1 N 4023 1878 4 26 72,0 Rl v     COM S? 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861) g
1 N 5226 1877 4 5 72,0 Rl v     VIR S 1   Parsons W. On the Construction of Specula of Six-feet Aperture; and a selection from the Observations of nebulae made with them  Phil. Trans. 151, 681-745 (1861)  
1 I 990 1878 4 27 72,0 Rr v   Bigourdan 31.5.1886 BOO S0 1   Parsons L. Observations of Nebulae and Clusters of Stars 1848-1878  Scient. Trans. Roy. Dublin Soc. Vol. II, 1-178 (1880)  

Birr Castle

 

72" Reflector

 

Dreyer at Armagh Observatory

10" Refractor