Sunday, March 8, 2026

A Visual Aid to Understanding Backfocus; Revisiting My Adapters for a New Camera

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Here's a set of several slides I made that helped me understand backfocus. Maybe you'll find them useful, too! Basic prime focus ima...
Sunday, November 30, 2025

Using PixInsight PixelMath to Correct a Flat Frame Issue

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In my last post I talked about a problem I had with flat frames collected at f/2. To correct the issue I used the processes AutomaticBackgro...
Sunday, November 23, 2025

Iowa Star Party Images: Repaired!

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To recap: I took one night's data at the October Iowa Star Party.  As was my usual (rather lazy) practice I deferred shooting flat frame...
Wednesday, October 29, 2025

Iowa Star Party Results

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Back from the Iowa Star Party, and my first field use of my Samyang lens. Mostly the results were good; shooting with the Samyang at f/2 app...
Saturday, October 11, 2025

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In preparation for the Iowa Star Party I'm doing a some imaging housekeeping. The guider needs a fresh calibration and the filter offset...
Monday, September 29, 2025

Getting The Samyang Setup Ready For Imaging

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[This is Part 2 of 2 about my new Samyang 135mm f/2 lens imaging system] What is the Samyang Setup?   It's the same setup I use for imag...
Tuesday, September 9, 2025

The Samyang 135mm f/2 Lens; Setting It Up and How to Use It

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[This is Part 1 of 2 about my new Samyang 135mm f/2 lens imaging system] Assembling the System My  Samyang 135 mm f/2  imaging system compri...