What to do when Photometric Color Calibration Doesn't...

[Seldom]

PCC appears to be doing a full plate solve, but ends with "Insufficient Photometric Data: Got 0 samples..."

[ngc1535]

Hi

Without knowing more about your image, it is difficult to say. Is it a wide field of view? Small FOV? Deep? NB...etc etc. (In focus??)
All of that being said, the first parameter to adjust as a blind guess is under Photometry. Uncheck the automatic magnitude limit and try something like 12 or 13th magnitude.
-adam

[Seldom]

Target is a tile field around NGC1909 (Witch Head).  FOV is 106'x140'. Filters are LRGB.  Focus is best I could get with @focus3 on a Cyan night per ClearSky chart.  All tiles have been ImageSolved.  Scope is an NP101is with .8x FL reducer.  FL= 435mm.  Pixel size is 3.8mm. 

Should have added that PCC works with some of my images.

Follow up: Turning off the Automatic Magnitude limits and setting Magnitude to 13 got my image to calibrate.  Tried another problem image and that worked also.  Does this mean the problem's fixed?

[ngc1535]

Yes, this is a good solution for the issue you presented. You want to match the catalog faint threshold with something commensurate with your data so there is a good correspondence between the two of them.  Does this mean I made a good guess? I am "Seldom" correct. I had to do it... it was there...
-adam

[Seldom]

And I seldom get useable answers to my questions...  So far the PI forum is batting way better than Cloudy Nights.