Re: Best way to do 400+ stars on three images

Posted by rjikyi on Dec 23, 2016; 6:03pm
URL: http://astroimagej.170.s1.nabble.com/Best-way-to-do-400-stars-on-three-images-tp48p576.html

Thank you very much for your reply - this sound super awesome! Maybe you could help me a bit step by step and in return I could write a tutorial how to create a HRD!?

So far I did:

#1: create an account at nova.astrometry.net to get a user key
#2: opend my image (one filter)
#3: pressed the astrometry button
#4: inserted the astrometry.net user key and let the programm run
#meanwhile: created a list with all the stars that could be in my picture based on coordinates
#5: imported RA/Dec list
#6: startet multi-aperture, ticked 'use previous apertures' and 'use RA/Dec to locate aperture position'
#7: getting errors:

rjikyi wrote

***ERROR: No signal for centroid in aperture C842 of image MASTER_B.fit.
********: Measurements are referenced to the non-centroided aperture location

I think some of the actual stars are to faint to be recognised by the software and therefore nothing can be found at those positions.
Is there a way to have those errors simply ignored?