Weighted Batch Processing - No filter

[Phillip Klein]

Hello,

Recently I tried using Weighted Batch Processing but have not been successfully registering light frames. The Smart Report shows:
Filter_Sulfer.xisf
Calibration completed
Frames analysis completed
***********************************
Referenced fram for registration D:/file name
Weights successfully computed and stored
************************************
Group of 4 light frames
Binning:1
NoFilter
Exposure: 900.00s
!!!Error: Star alignment failed to register 3 images out of 4. A minimum of 3 images must be successfully registered.

The group of 4 light frames subs taken with a Hydrogen alpha filter. The file naming of the sulfer frames is the same as the hydrogen so I am confused by the NoFilter text.

Equipment I am using to capture the subs is the following: AP Mach 1 GTO mount, Celestron 8" Edge, AP 0.67 focal reducer, QSI 532ws 5 position filter wheel. Orion Starshooter autoguider
Light subs were sulfer 480 sec x 5, oxygen 480 sec x 5, hydrogen 900 sec x 5

I received the same message when I ran WBPP with all the narrow band filters exposures being 480 seconds.  I question if length of file name can cause problems.

Would appreciate any help in fixing whatever I am doing wrong. It is frustrating not to be able to integrate all the lights, darks, flats and bias frames.

Attached is a copy of the Smart Report.

Thanks again,
Phil

[dave_galera]

Think you need to post the images before anybody can help you

[Phillip Klein]

Hi Dave,

That is the problem. I cannot acquire an image. The WBPP provides a Master Flat, Master Dark and Master Bias but no other images. I will gladly attach one of the H subs if that helps.

Thank you,

Phil