SBIG ST10 XME
L=18m 1xBin, R,G,B=5x1m 2xBin, 10.01.2003
Pollux 0.8m azimutal mounted telescope
3557mm (=140 inch) f/4.44
SBIG Filter Set provided with the CFW8
3-lens Wynne corrector
average of 2.8 arc seconds
MaximDL LRGB composit, PS 5.5, CCDSharp
Moonlight, mirror was very dirty, thus a lot of straylight.
Philipp Keller and Christian Fuchs

This image is an animated gif made from an image we made with the T1T about 1 year ago and the new image from our AltAz Pollux telescope.
The bright star at the south end of the nebula is R Mon. It is a massive Herbig Ae/Be star that is surrounded by an accretion disc and varies by 3-4 mag in brightness. Changes in the transparency of the accretion disc also cause massive changes in the appearance of the nebula which is about 0.2x0.4 light years large.

The above image shows large changes in the southern part of the nebula in this 1-year period.