Wavefront reconstruction accuracy

February 09, 2014
As a test of accuracy of my Roddier & Roddier wavefront reconstruction implementation, defocused images were simulated for a 530 mm f/5 lens with known low-order Zernike...
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Off-axis Hα-band image quality

January 20, 2014
This post shows results of on-axis and off-axis image quality tests of my Takahashi FSQ-106EDX 530 mm f/5 lens using my implementation of the Roddier & Roddier test. See...
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On-axis image quality

December 31, 2013
To investigate on-axis image quality of my Takahashi FSQ-106EDX 530 mm f/5 lens, I implemented the wavefront curvature estimator outlined in Roddier & Roddier (1993, 1991...
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Scientific CMOS (sCMOS) cameras

December 02, 2013
Scientific CMOS (sCMOS) cameras offer a set of high performance features, including extremely low read noise, wide dynamic range, high quantum efficiency, and rapid frame...
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FWHM Improvements

November 22, 2013
I measured the full width at half maximum (FWHM) of a large number of stars (several thousand) on each 40 minute subframe of each of my integrations. The charts below sho...
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