Similar to NGC_18

• 

  らせん星雲

  Helix Nebula
  
• 

  NGC 7424

  NGC 7424
  
• 

  NGC 7522

  NGC 7522
  
• 

  NGC 7635

  Bubble Nebula
  
• 

  M52 (天体)

  Messier 52
  
• 

  NGC 7662

  NGC 7662
  
• 

  NGC 7790

  NGC 7790
  
• 

  NGC 5315

  
• 

  NGC 252

  NGC 252
  
• 

  NGC 1360

  NGC 1360
  
• 

  NGC 2169

  NGC 2169
  
• 

  NGC 4666

  NGC 4666
  
• 

  NGC 5084

  NGC 5084