photometric colour calibration error

[msmythers]

While that sounds like an interesting experiment one thing that comes to mind as someone who shoots wider field images and in heavy lp is gradients. One of the reasons why you generally use DBE before color calibration is because if the gradient is LP generated it will likely be color sensitive. If you color cal first you might not be able to recognize gradient issues or that you have created artifacts with DBE. Add that on top of what rob was saying and you might be scratching your head on how to correct something or what went wrong. Now if your shooting from a very dark location, a narrow field of view and a well balanced camera you might be able to color balance first. Of course that adds a lot of extra steps if you have a lot of subs.


Mike

[Andres.Pozo]

The update to AperturePhotometry released today should help with this image. It should help with images that produce the error "Insufficient photometric data: Got XX sample(s); at least 5 are required.".

[msmythers]

Thanks Andres.


For those who want to know about the update after installing you can go to the menu 'Resources/Updates/View Installed Updates' in PI.


Mike

[ashinozaki]

Before the Aperture Photometry update, my PhotometricColorCalibration was working like a charm.

Now, I get failures and complaints about finding zero stars?  This all has worked before.  Any thing I should check or change in procedures?

Thanks, Ari

[Andres.Pozo]

https://pixinsight.com/forum/index.php?topic=12463.msg76225#msg76225

[oldwexi]

Before the Aperture Photometry update, my PhotometricColorCalibration was working like a charm.

Now, I get failures and complaints about finding zero stars?  This all has worked before.  Any thing I should check or change in procedures?

Thanks, Ari

Today and at the moment it looks like the Vizier Services in Strasbourgh are out of service.
As long there is no access to the VizieR Server as long we will have no Image Solving and no Annotation.
Its not a PI issue!
Gerald

[astrochaser]

Before the Aperture Photometry update, my PhotometricColorCalibration was working like a charm.

Now, I get failures and complaints about finding zero stars?  This all has worked before.  Any thing I should check or change in procedures?

Thanks, Ari

Today and at the moment it looks like the Vizier Services in Strasbourgh are out of service.
As long there is no access to the VizieR Server as long we will have no Image Solving and no Annotation.
Its not a PI issue!
Gerald

Just tried logging into the University's server network to see if I can connect. It appears their server system is down. So Gerald is correct, not a PI issue.

Richard

[ashinozaki]

Any alternatives to the VizieR server @ strassbourg?