Re: [APML] OT: New CCD Image of M106

["Volker Wendel" <volker@spiegelteam.de>]

Hello Brian,

that´s a very nice image of M106 and I like the way you did the non-linear
processing. I´m wondering that there is so little noise visible in the outer
parts of that galaxy, what did you do to smooth the noise?

Tschüss,

Volker
www.spiegelteam.de


> Hi,
>
> Here is a new LRGB image of M106 taken in quite poor seeing ( 3.6arcsec
FHWM)
> but clear sky, a real rarity lately here in New England. This image is a
> 96:42:42:42 minute respective exposure in 2x2 bin mode for all channels
using a
> 20" f/8 RC and IMG6303E CCD camera. The green and blue channels were
acquired at
> lower than usual altitudes and some refractive smearing may be
> starting to occur in these channels.
>
> The luminance had DDP and LR applied and was stretched considerably to
highlight
> the faint outer regions of this huge apparent diameter galaxy. Even with
the
> length of exposures in the color channels it was near impossible to pick
up any
> color signal in the faint outer arms.A darker than 5.0 mag.site would have
been very helpful
> in this case. The image scale is .9arcsec/pixel.
>
> The new image is at:
>
>
http://www.heavensgloryobservatory.com/Color_Jpegs/m106RCLRGB03-6303Eweb.jpg
>
> Comments welcome!
>
>
> Best regards, Brian Lula


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