https://rogerivester.com/2026/07/23/late-sunsets-and-heat-can-make-summertime-observing-difficult-consider-three-open-clusters-and-an-asterism-for-a-fun-evening-with-a-small-telescope/Deep-Sky Observing And Other en2026-07-23T14:25:46+00:00Late Sunsets And Heat Can Make Summertime Observing Difficult: Consider Three Open Clusters And An Asterism For A Fun Evening With A Small Telescope