Sunspot photography on April 21st, 2018

Even though we're approaching the minimum of the current solar cycle, occasional sunspots still appear.   This was the best shot out of a serious of 35 captures taken with FireCapture and stacked with AutoStakkert. Final touch ups (I had some dust on the sensor) where done with GIMP.

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Celestron Firmware Manager on Linux

To update the hand control or motor controller firmware on any of your Celestron mounts, you will need the Celestron Firmware Manager. The whole process is explained on this website. Long story short, you have to download the software here: http://software.celestron.com/updates/?dir=CFM/CFM After unzipping you end up with CFM.jar. To be able to run that you … Continue reading Celestron Firmware Manager on Linux