[marco (Marco Lorenzi)]

First of all I want to heartly thanks all of you for the appreciation and let me clarify that the merits of having found out this hidden gem are of Sakib Rasool, in this case I am only the humble labourer that managed to collect the light

Originally Posted by PeterM

Sensational image Marco congratulations. This object is listed in the revised Hartungs as object 646. I have viewed this years ago using a 37cm and O111 filter. There are notes that there is some positional co-incidence with a "new star" recorded by Chinese observers in AD185. Though another nearby object RCW86 is the likely Supernova remnant for this event.
Some interesting sites below.

http://en.wikipedia.org/wiki/SN_185

http://www.chjaa.org/2006/2006_6_5p635.pdf

Thanks for the very interesting note Peter, I was not aware of this further details

Originally Posted by avandonk

Here you go Marco. I was using Alpha Cent to focus and test tracking and had this image. It is a 960s single exposure without any correction in NII 3nm. The Bright star is Alpha Cent. 4MB

http://d1355990.i49.quadrahosting.co...2_06/ACfoc.jpg

thanks Bert, you collected a lot of light considering the short exposure, my compliments!

Originally Posted by SkyViking

Wow, that's an amazing image and some very interesting info. The processing is superb as always, it must be a challenge to get such an image with Alpha Centauri in the field!
Great choice of target and well done, thanks for sharing this.

Thanks Rolf. Managing the light of ACent was the most difficult part since I had nasty reflections everywhere in Ha. To fix it I had to take several group of images keeping the star outside with different offset to null the reflections without loosing the light from the nebulosity

Again, thanks for the appreciations!

Clear skies
Marco