{"id":11270,"date":"2026-08-22T09:40:21","date_gmt":"2026-08-22T13:40:21","guid":{"rendered":"https:\/\/starlightcascade.ca\/blog\/?p=11270"},"modified":"2026-08-22T09:40:21","modified_gmt":"2026-08-22T13:40:21","slug":"saturn-20260822","status":"publish","type":"post","link":"https:\/\/starlightcascade.ca\/blog\/2026\/08\/saturn-20260822\/","title":{"rendered":"Saturn 20260822"},"content":{"rendered":"

Another early morning imaging session at 04:00.
\nTransparency was average 5\/10 and seeing was poor 2\/10. Seeing may have been a little bit better at the start of the session but then went downhill fast.
\nThis was the best 5% of 12K frames at 15ms each.
\n\"\"<\/a><\/p>\n

Why the best 5% and not more? The quality graph from autostakkert! is why:
\n\"\"<\/a><\/p>\n

The green line is the key. where is crosses the horizontal 50% mark is what I use for my processing. In this case the green line dips below the 50% level around 5% of the way from left to right. Very poor quality images. Typically the best seeing here I might use the best 25%.. but that is rare.<\/p>\n

I took another stab at Wavesharp for wavelet processing and got some of the moons again. Both on the right of Saturn, the left moon is Tethys (mag 10.18) and the right moon is Enceladus (mag 11.67). The motion is over 85 minutes.\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Another early morning imaging session at 04:00. Transparency was average 5\/10 and seeing was poor 2\/10. Seeing may have been a little bit better at the start of the session but then went downhill fast. This was the best 5% of 12K frames at 15ms each. Why the best 5% and not more? The quality […]<\/p>\n","protected":false},"author":3,"featured_media":11272,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[],"class_list":["post-11270","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-astronomy"],"_links":{"self":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts\/11270","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/comments?post=11270"}],"version-history":[{"count":1,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts\/11270\/revisions"}],"predecessor-version":[{"id":11274,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/posts\/11270\/revisions\/11274"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/media\/11272"}],"wp:attachment":[{"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/media?parent=11270"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/categories?post=11270"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starlightcascade.ca\/blog\/wp-json\/wp\/v2\/tags?post=11270"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}