PixInsight Forum (historical)

PixInsight => General => Off-topic => Topic started by: Phil Leigh on 2013 August 02 08:28:32

Title: Batch PP Script question - mixed fit & Cr2 files
Post by: Phil Leigh on 2013 August 02 08:28:32

Hi,
I use a couple of rebuilt, heavily modified cameras that are underneath still Canon DSLR's.
I have Master Bias and Master Dark frames in FIT format.
Each session I take flats and lights. These obviously are in CR2 (RAW) format.

When I run the script all is fine except for this rather worrying message:

** Warning: The file format reports no CFA pattern for the master dark frame, but it is being forced as per process instance parameters.

Does this error matter?
Thanks
Phil

Title: Re: Batch PP Script question - mixed fit & Cr2 files
Post by: Nocturnal on 2013 August 02 08:43:11

Hi,

were the master files created by PI? If so I would assume this error isn't a problem. More importantly, how is the result? CFA errors would be easy to detect.

Title: Re: Batch PP Script question - mixed fit & Cr2 files
Post by: Phil Leigh on 2013 August 02 09:26:46

Sorry I should have said..
yes the Master Bias and Dark were created in Pi using the Vicent Peris method...

... and yes the result looks good to me. I'm just paranoid about warning messages I don't understand :-)

I guess it's because the "CFA" checkbox is presumed to apply to all subs by the script...?

Title: Re: Batch PP Script question - mixed fit & Cr2 files
Post by: Nocturnal on 2013 August 02 10:44:31

Hi,

I agree, warning messages should be understood regardless of results. Let's see what else people post here.

Title: Re: Batch PP Script question - mixed fit & Cr2 files
Post by: Sedat on 2015 May 05 11:45:24

I'm receiving the same message :( The calibrated files look good though...

Has anybody have an answer for this ?

Title: Re: Batch PP Script question - mixed fit & Cr2 files
Post by: Sedat on 2015 May 05 11:58:32

I found this explanation on Cloudy Nights, which seems to be taken from PI forums :) http://www.cloudynights.com/topic/492626-pixinsight-updates-broken-bpp-integration/?p=6467668 (http://www.cloudynights.com/topic/492626-pixinsight-updates-broken-bpp-integration/?p=6467668)

"Here is an explanation for the CFA error I found on the PI forums:
 
This caused by yourself (or BPP) having set the input hint to 'raw cfa' (which is correct for DSLR).
When the input is in a raw format, PI can find out that it is indeed in CFA format, so it is happy.
When the input is in FITS format, the 'raw' part is ignored (but does not hurt), the 'cfa' part is obeyd (and must be present for some process and do not hurt for others), but PI cannot check that the file was indeed in 'cfa' mode. This information is not in a FITS header.  So it tell you: OK, you tell me it is CFA, I believe you, but I cannot check."

I understand this not something I should worry about ?