BSM_S images from November 2025 forward

Observers with projects running on BSM_S may find images from November 2025 to current suddenly appearing in their inbox. An error in the calibration pipeline prevented them from being processed, so these should be the first time that you’ve seen the images, even though they were taken months ago. Please just analyze them in your normal manner.

We will put in safeguards to prevent this kind of delay in the future.
Arne

Hi Arne,

Thanks for the report on th BSM-S5 images.

I recently got a bunch of BSM-S images from Nov.'25 and I’ve be submitting BVI data from them. I’ve noticed that the I magnitudes measurements have a much larger err than the B and V images using the same ensemble sequence. Some were so bad I just did not report them. The B and V measurements were fine. Of course there are several reasons this might happen. In this case I think the reason could be that the I filter is not settled in properly in the wheel. When I zoom in close to stars in the I image there is a significant offset of the measuring aperture from the star image. This does not appear (at least not as much) in the B and V images. I am about to use the VPhot pixel tool to recenter the star. If I do this should I save the adjusted sequence separately with a different name?. In other words, in VPhot does altering the position of the measuring aperature in one filter affect the measuring apertures in other filters?

Phil