NGC 7538
 

Click photo to see a larger image.
 
Description: This nebula has been the subject of much investigation recently due to the discovery of a high mass protostar that has a diameter of about 10 of our Solar Systems. A protostar is a mass of gas and dust that is collapsing to form a star. Protostars are hard to study because they are born in obscured regions. Methanol masers are often used to penetrate these obscuring regions and provide information about this little understood process.
 
Constellation: Cepheus
 
Distance: 7000 light years
 
Apparent Size: about 8 x 7 arc seconds
 
Date: 21 july, 6 august, 3 september 2005
 
Equipment: 12" RCOS RC, ST10XME, AP1200
 
Exposure: HaRGB: 270-60-75-60 minutes