RANSAC Errors - Help Please

[ghooper]

I am a new PixInsight licensee. I am working through Warren Keller's Inside PixInsight. I'm having great difficulty with the same problem on all my datasets in BatchPreprocessing. The whole process works perfectly until the calibration of lights, when I get RANSAC errors - Unable to find a valid set of star pair matches. I have no problems in processing the same files, and their associated calibration files using DSS. There must be something that I am not getting, or doing wrong. I'm wondering if there's anybody who can help me see my error.

Thank you.

[dave_galera]

John Gill suggested using the following values to get around this:

Star Detection
 - Detection scales 3
 - Noise scales 0
 - Hot pixel removal 1
 - Noise reduction 5
 - Log sensitivity -1.00
 - Peak response 1.0
 - Maximum distortion 0.500
 - Upper limit 1.00

Star Matching
 - RANSAC tolerance 7.00

[ghooper]

Thank you Dave. I'll give this a try. From what I understand these settings are available in StarAlignment. May I assume that your recommendation involves using Batch Preprocessing script selecting "calibrate only", and performing image registration and integration using StarAlignment?

[dave_galera]

Yes correct