Re: Astrometry Settings Issue - Limit Max Peaks in 8-bit Images
Posted by
karenacollins on
Mar 23, 2021; 8:46am
URL: http://astroimagej.170.s1.nabble.com/Astrometry-Settings-Issue-Limit-Max-Peaks-in-8-bit-Images-tp1530p1531.html
The astrometry feature is not well-tested using 8-bit images. If
you'd like to send send us an example of an image that gives the
behavior you describe below, we can look into when we get a chance.
If you have trouble attaching the image to a post, you can send it
to karenacollins atsymbol outlook dotsymbol com.
Karen
On 3/22/2021 5:00 AM, mketi [via
AstroImageJ] wrote:
Hi there,
I've been working on a little project hat requires plate solving
images produced in a small refractor and a sensor with fairly
large pixels. I'm not sure if it's the right thing to do, but to
counter star blockiness and keep out saturated reference stars, I
selected the "Centroid Near Peaks" and "Limit Max Peaks" options
in the Astrometry Settings area.
Based on the plate solving animations, it looks like centroid
option works. I'm not sure about the "Limit Max Peaks", however.
AIJ often seems to circle stars that are over my set limit. In my
8-bit images, if I set the max peak limit to 250, saturated stars
with peak values of 255 may still be selected. When I lower the
max peak limit all the way down to 30, it seems to stop choosing
the saturated stars. Is the program behaving correctly, or am I
perhaps doing something wrong?
Thanks very much for your help!
Matt