Astro Lab Tools
Open File
Calibrate
Click two points, then enter the known distance between them. Adjust by dragging endpoints.
=
pixels
Pixel scale =
This FITS file already contains calibration.
Pixel scale =
Point
Line
Box
Ellipse
Click a point to record its coordinates and pixel value.
Click two points to measure distance between them. Adjust by dragging endpoints.
Click two points to draw a box.
Click a point to set the center, then two more to complete the ellipse. Scale and rotate by dragging the handles.
Header
Scale
Linear
Log
Contrast
Brightness
Autoscale
Minmax
99.9%
99%
90%
Invert
Click and drag to pan
Right click and drag to change brightness/contrast
Scroll to zoom