LRGB Processing Question

[Ryderscope]

I am attempting my first LRGB processing having previously worked quite successfully in PI with OSC images from my Canon 60Da. My new camera is the QSI 683 ws-8 ccd so this is my first foray into LRGB processing. I am having problems getting the batch preprocessing script to recognise the presence of the flat field images. I have loaded Bias, Flats, Darks and Lights but when I run the diagnostics tool it reports that no flat frames have been selected to calibrate the light frames. Apologies for having to ask what is probably a quite basic question but I am unsure as to how to trouble shoot this issue. A link to a screen shot of the diagnostics report is here https://www.dropbox.com/s/14k72gv11ymv6ga/Flats%20error.JPG?dl=0

Many thanks in advance.
Rodney W.

[pfile]

take a look at the FITS header for the flat subs. if they are missing the filter keyword for some reason, BPP does not know how to match them up with the lights.

if worse comes to worse you can use the 'custom' feature to force your flat files to belong to a particular filter.

rob

[Ryderscope]

Copy of relevant part of the FITS header attached.

Does it matter if the Lights are binned 2x2 and the Flats are binned 1x1?

RW

[Geoff]

Copy of relevant part of the FITS header attached.

Does it matter if the Lights are binned 2x2 and the Flats are binned 1x1?

RW

Yes. You may be better off cludging the issue by resampling the flats to half their size and using the ImageCalibration module in this case. This will only correct dust donuts and vignetting, but not PRNU.
Geoff

[Ryderscope]

Thanks Geoff, I will retake the flats and see how that goes.

RW

[Ryderscope]

I've re shot the flats at 2x2 binning and the batch pre processing script is ok with them. Runs through fine and gives me registered and integrated RGB & L output.

Thanks Geoff and Rob for your responses.

Now to combine and process and see how we go.