How to Look at your Lucifer Imaging during the night

You can use the Skycat window to examine your data as it's being taken

  • Set up bias image in Skycat : Click on File, Bias Image, Copy image --> bias, click on Subtract radio button

This sets up difference images to be displayed.

  • Autoscale the difference images

Change scale to 6x (blue button), click "Auto Set Cut Levels", then change scale to 1/2X, which shows you entire image.

  • Measure seeing

Click on View, Pick Object

In pick object window, click on "Pick Object", put cursor on star and click.

FWHM in pixels is calculated. Images have .12"/pixel with N3.75 camera
Topic revision: r1 - 07 Jan 2011, XiaohuiFan
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