|Scope, mount, camera:||12.5" Newtonian, f/5.1, MAM50, ST-10XME|
|Filter, exposure time:||LchiRGB, Lchi = L+R+G+B, L = 20*180s, RGB=(17x17x12)*300s|
|Total exposure time:||4h50min|
|Location:||La Palma, Roque de los muchachos|
|Comments:||Image seeing: 1.9"
Data reduction with THELI, colour composition in PS.
The longer integration times in R and G compensate for not so good transparency in one of the nights.
The image was resampled from the native scale of 0.855"/pixel to 0.700"/pixel, resulting in about 2.7 pixels in the FWHM.