Hi there,
during the last nights, I collected some data of M51. Today, I stacked the images and in the master frames, i realized a linear halo through all of them. I could not detect those issues in the subs, but I guess they are there and just can't be seen, because they are really faint. The Luminance master I attached is the worst one. I guess it is because I had more subs for it than for the other channels.
I used PI and the WBPP script to create the master lights using the same settings as ever. I also used the same darks and bias frames as for my latest projects. This is the first time the problem occured, so I assume the issue is in the lights. The master flats look good to me, so far. The attached image is a screenshot with just the stf applied with standard settings.
In the past, i had some issues with halos, as well. But these ones are strange, because the are all parallel. I have no idea what causes such issues, because in the image path of the uses ES 127ED refractor, I can't find a straight edge other than those of the sensor window itself of the ASI183MM Pro I used. I can't think of a light source around my place which creates those strange halos.
Do you have any idea, what's the problem here?
Thanks in advance.
CS
Christian
during the last nights, I collected some data of M51. Today, I stacked the images and in the master frames, i realized a linear halo through all of them. I could not detect those issues in the subs, but I guess they are there and just can't be seen, because they are really faint. The Luminance master I attached is the worst one. I guess it is because I had more subs for it than for the other channels.
I used PI and the WBPP script to create the master lights using the same settings as ever. I also used the same darks and bias frames as for my latest projects. This is the first time the problem occured, so I assume the issue is in the lights. The master flats look good to me, so far. The attached image is a screenshot with just the stf applied with standard settings.
In the past, i had some issues with halos, as well. But these ones are strange, because the are all parallel. I have no idea what causes such issues, because in the image path of the uses ES 127ED refractor, I can't find a straight edge other than those of the sensor window itself of the ASI183MM Pro I used. I can't think of a light source around my place which creates those strange halos.
Do you have any idea, what's the problem here?
Thanks in advance.
CS
Christian
