So it is cloudy out here and doing maintenance... had funny sounds in the fans so got replacements and decided to try to put them in.... Take the cover of and there are a couple small moths in the fan assembly.... air blast and no noise....
In my observatory it's the ladybugs that drive me nuts. Ladybugs used to be nice creatures, until the invasive asian ladybug took over, now the stinky things just love to cram into all my observatory equipment. They get into everything! https://www.heartspm.com/asian-lady-beetles-vs-native-ladybugs.php
Hey Doug, please see my question on filters..... not sure the SBIG side is monitored so much: Have the new Astrodon filters to replace my Baaders. The Baaders were installed with an O-ring. The Astrodon’s look thicker. Is there a different procedure? I have SBIG 8300M. Jerry Y