dsoman
January 27th, 2010, 03:08 AM
Abell 39 is an early morning object right now [yawn!].
A seldom photographed small PN, only 3.9 arc min in diameter. Abell 39 has a low surface brightness and is almost perfectly spherical with a radius of 2.5 light years. The integrated magnitude is 13.7 while the central star has a magnitude of 15.5.
http://tinyurl.com/yd3guhn
This image is composed of 16 exposures of 15 minutes each.
Meade SN10 [10" - f/4] on an Atlas EQ-G.
Camera: QHY8 single shot color with MPCC.
Guiding: Orion ST80, DSI & PHD.
Captured with Nebulosity.
Stacked with DSS and processed in Photoshop.
Seeing and transparency: excellent.
Brent
A seldom photographed small PN, only 3.9 arc min in diameter. Abell 39 has a low surface brightness and is almost perfectly spherical with a radius of 2.5 light years. The integrated magnitude is 13.7 while the central star has a magnitude of 15.5.
http://tinyurl.com/yd3guhn
This image is composed of 16 exposures of 15 minutes each.
Meade SN10 [10" - f/4] on an Atlas EQ-G.
Camera: QHY8 single shot color with MPCC.
Guiding: Orion ST80, DSI & PHD.
Captured with Nebulosity.
Stacked with DSS and processed in Photoshop.
Seeing and transparency: excellent.
Brent