integrated image bright red??

[alcol]

Hi folks

A newbie question

Just calibrated, registered and integrated some images of M45 and the integrated image is bright red with the stars showing through when I stretch it. The image looks rather like a Mask image. Applying DBE produces a more normal image, albeit with a red tinge about it.

Images taken with a DSLR camera ISO 800 Exp 300s

Can someone explain what is going on, why the integrated image is so red?

Thanks

Alec

[Alejandro Tombolini]

Hi Alec, this video may help.
Saludos, Alejandro.

[alcol]

Thanks Alejandro

Much clearer now where all the red comes from. I thought it might be something to do with my processing. Pity the video's don't have audio, but you can't have everything.

Many thanks for your assistance.

Alec

[alcol]

Hi folks

I have posted again as a separate subject, having found some sort of problem with the flats which is causing the red images.

See subject "more trouble with flats"

Help would be appreciated

Thanks

Alec