Archive for the ‘Donal McDonnell’ Category

Horsehead and Flame Nebulae Imaged by Donal McDonnell

The Horsehead Nebula (Barnard 33) is a dark nebula in bright nebula IC 434, in the constellation of Orion.  The Flame nebula can be seen to the bottom left of the image. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness...
August 17th, 2009 | Donal McDonnell | Read More

Orion Nebula (M42) Imaged by Donal McDonnell

The exposure details / channel assignments are as follows: Ha= 25m (R) SII = 35m (G) OIII = 35m (B) Taken on Takahashi FSQ106ED at F5 with an SBIG STL6303 CCD and Astronomic Filters. Click here for a larger image.
August 8th, 2009 | Donal McDonnell | Read More

Heart Nebula (IC 1805) Imaged by Donal McDonnell

Exposure details: Ha 2h45m SII 8h OIII 8h30m Camera STL6300, Telescope FSQ106ED, Mount EQ6. Processed in CCDStack. Click here for larger image
August 8th, 2009 | Donal McDonnell | Read More