Feder Observatory

A Blog for Minnesota State University Moorhead's Paul P. Feder Observatory

Archive for March, 2012


Part II: Aperture Photometry using Astro Image J 0

Posted on March 20, 2012 by Linda

AIPPartII.pdf
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Part II: Aperture Photometry Overview 0

Posted on March 20, 2012 by Linda


AIPPartII.pdf
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Dome flats 0

Posted on March 14, 2012 by Matt

Dear all:

I spent today hanging a frosted curtain in the dome, as a flat dome screen.  Well, most of the day was spent finding the very tall ladder, dragging it up from the basement, and hauling into the upper dome, then dragging it back to its original spot.  Anyway, I’m a bit too tired to try it.  I have left a battery eliminator and a couple incandescent bulbs (flashlight bulb and Christmas tree light) in the dome on the table, in case any of you wish to try the screen before I get a chance.  The screen is roughly 70″ x 70″, so should be quite easy to point the telescope at.  It looks charmingly gray in the dome–not exactly Martha Stewart living!  It is held on by magnets which I also taped onto the curtain so that dome movement does not knock them down.  Let me know if the magnets do fall off though and I’ll find stronger ones.

Focus versus deg F, Fall 2011 0

Posted on March 14, 2012 by Matt


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Observing log, Sat, Mar 10 0

Posted on March 11, 2012 by Matt

I came out observing with my daughters. Seeing was ok, 5-5.5 pixels FWHM on a 5th magnitude star. I observed the standard star field SA98 a couple times, the variable stars V0556 Cas and EY Uma, and SN2011 fe in M101.

Part I: Calbration Example Using Astro ImageJ 0

Posted on March 08, 2012 by Linda


AIPPartID_example.pdf
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Part I: Calibrating Images Overview 0

Posted on March 08, 2012 by Linda


AIPPartI.pdf
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Overview of steps to calibrate images



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