{"id":1502,"date":"2019-06-16T11:42:36","date_gmt":"2019-06-16T16:42:36","guid":{"rendered":"http:\/\/jonvoisey.net\/blog\/?p=1502"},"modified":"2019-06-16T11:42:36","modified_gmt":"2019-06-16T16:42:36","slug":"data-stellar-quadrant-observations-lilies-war","status":"publish","type":"post","link":"https:\/\/jonvoisey.net\/blog\/2019\/06\/data-stellar-quadrant-observations-lilies-war\/","title":{"rendered":"Data: Stellar Quadrant Observations \u2013 Lilies War"},"content":{"rendered":"

This past week was Lilies War<\/a>, north of Kansas City. With a bit of packing tetris, I was able to fit the full quadrant along with most of my camping gear<\/span>1<\/sup><\/a><\/span> to attend. Despite Lilies being traditionally extremely hot<\/span>2<\/sup><\/a><\/span> and stormy, the weather was quite nice this year with highs in the 70’s most days and lows in the 50’s<\/span>3<\/sup><\/a><\/span>. This unseasonably cool weather did bring some storms, but nothing like what we’ve experienced the past few years. Yet between storms I was able to get in a few nights of observing, getting in observations of 59 stellar targets, 26 of which are new to the catalog.<\/p>\n

As always, data below the fold.<\/p>\n

The first night of observing was on 6\/8\/2019. This night I was assisted by Ellie<\/a> and Skooli. The moon was just before first quarter, which was quite bright, but I was still able to see into the range of about magnitude 4.5. Looking over the data, one of the things that stands out is that the time I took the observations was often quite early. Being a bit early isn’t uncommon, but in some cases I believed the target to be on the meridian almost 10 minutes early. The consistency with which this was the case suggests that the quadrant was knocked out of polar alignment. However, since there is little component of the motion with respect to the declination as objects cross the meridian, this had little impact on the altitude.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Object<\/strong><\/td>\nAlt<\/strong><\/td>\nAz<\/strong><\/td>\nST<\/strong><\/td>\nDec<\/strong><\/td>\nError<\/strong><\/span>4<\/sup><\/a><\/span><\/td>\n<\/tr>\n
\u03b1 Vir<\/td>\n39.6<\/td>\n180<\/td>\n13:25<\/td>\n-10.97<\/td>\n+0.19<\/td>\n<\/tr>\n
\u03c4 Vir<\/td>\n51.9<\/td>\n180<\/td>\n13:59<\/td>\n1.33<\/td>\n-0.21<\/td>\n<\/tr>\n
\u03ba Vir<\/td>\n40.4<\/td>\n180<\/td>\n14:06<\/td>\n-10.17<\/td>\n+0.10<\/td>\n<\/tr>\n
\u03b9 Vir<\/td>\n44.5<\/td>\n180<\/td>\n14:11<\/td>\n-6.07<\/td>\n-0.07<\/td>\n<\/tr>\n
\u03b1 Boo<\/td>\n69.6<\/td>\n180<\/td>\n14:12<\/td>\n19.03<\/td>\n-0.14<\/td>\n<\/tr>\n
\u03b7 Cen<\/td>\n8.4<\/td>\n180<\/td>\n14:19<\/td>\n-42.17<\/td>\n-0.01<\/td>\n<\/tr>\n
\u03bc Vir<\/td>\n44.9<\/td>\n180<\/td>\n14:36<\/td>\n-5.67<\/td>\n-0.01<\/td>\n<\/tr>\n
\u03b6 Boo<\/td>\n64.1<\/td>\n180<\/td>\n14:39<\/td>\n13.53<\/td>\n-0.19<\/td>\n<\/tr>\n
109 Vir<\/td>\n52.4<\/td>\n180<\/td>\n14:43<\/td>\n1.83<\/td>\n-0.06<\/td>\n<\/tr>\n
\u03b1 Lib<\/td>\n34.7<\/td>\n180<\/td>\n14:45<\/td>\n-15.87<\/td>\n+0.17<\/td>\n<\/tr>\n
16 Lib<\/td>\n46.0<\/td>\n180<\/td>\n14:52<\/td>\n-4.57<\/td>\n-0.22<\/td>\n<\/tr>\n
\u03c3 Lib<\/td>\n25.2<\/td>\n180<\/td>\n14:54<\/td>\n-25.37<\/td>\n-0.09<\/td>\n<\/tr>\n
110 Vir<\/td>\n52.8<\/td>\n180<\/td>\n15:00<\/td>\n2.23<\/td>\n+0.13<\/td>\n<\/tr>\n
\u03b2 UMi<\/td>\n55.2<\/td>\n0<\/td>\n15:04<\/td>\n74.23<\/td>\n+0.07<\/td>\n<\/tr>\n
\u03c6 Lup<\/td>\n14.4<\/td>\n180<\/td>\n15:08<\/td>\n-36.17<\/td>\n+0.09<\/td>\n<\/tr>\n
\u03b2 Lib<\/td>\n41.2<\/td>\n180<\/td>\n15:13<\/td>\n-9.37<\/td>\n+0.01<\/td>\n<\/tr>\n
\u03b3 Lib<\/td>\n35.7<\/td>\n180<\/td>\n15:28<\/td>\n-14.87<\/td>\n-0.08<\/td>\n<\/tr>\n
\u03c5 Lib<\/td>\n22.4<\/td>\n180<\/td>\n15:29<\/td>\n-28.17<\/td>\n-0.03<\/td>\n<\/tr>\n
\u03c4 Lib<\/td>\n20.7<\/td>\n180<\/td>\n15:29<\/td>\n-29.67<\/td>\n+0.11<\/td>\n<\/tr>\n
\u03b4 Ser<\/td>\n61.0<\/td>\n180<\/td>\n15:31<\/td>\n10.43<\/td>\n-0.11<\/td>\n<\/tr>\n
\u03b1 Ser<\/td>\n57.0<\/td>\n180<\/td>\n15:42<\/td>\n6.43<\/td>\n+0.00<\/td>\n<\/tr>\n
\u03bc Ser<\/td>\n47.3<\/td>\n180<\/td>\n15:44<\/td>\n-3.27<\/td>\n+0.16<\/td>\n<\/tr>\n
\u03b5 Ser<\/td>\n55.7<\/td>\n180<\/td>\n15:47<\/td>\n5.13<\/td>\n+0.65<\/td>\n<\/tr>\n
\u03b2 Ser<\/td>\n66.8<\/td>\n180<\/td>\n15:48<\/td>\n16.23<\/td>\n+0.81<\/td>\n<\/tr>\n
\u03c0 Sco<\/td>\n24.0<\/td>\n180<\/td>\n15:50<\/td>\n-26.57<\/td>\n-0.46<\/td>\n<\/tr>\n
\u03b4\u00a0Sco<\/td>\n27.8<\/td>\n180<\/td>\n15:54<\/td>\n-22.77<\/td>\n-0.15<\/td>\n<\/tr>\n
\u03b2 Sco<\/td>\n30.7<\/td>\n180<\/td>\n15:54<\/td>\n-19.87<\/td>\n-0.06<\/td>\n<\/tr>\n
\u03be Sco<\/td>\n39.3<\/td>\n180<\/td>\n16:1<\/td>\n-11.27<\/td>\n+0.10<\/td>\n<\/tr>\n
\u03c9 Sco<\/td>\n30.0<\/td>\n180<\/td>\n16:02<\/td>\n-20.57<\/td>\n+0.10<\/td>\n<\/tr>\n
\u03b6 UMi<\/td>\n51.7<\/td>\n0<\/td>\n16:06<\/td>\n77.73<\/td>\n-0.06<\/td>\n<\/tr>\n
\u03b4 Oph<\/td>\n46.9<\/td>\n180<\/td>\n16:08<\/td>\n-3.67<\/td>\n+0.02<\/td>\n<\/tr>\n
\u03b5 Oph<\/td>\n46.8<\/td>\n180<\/td>\n16:14<\/td>\n-3.77<\/td>\n+0.92<\/td>\n<\/tr>\n
\u03c3 Sco<\/td>\n25.1<\/td>\n180<\/td>\n16:15<\/td>\n-25.47<\/td>\n+0.12<\/td>\n<\/tr>\n
\u03b1 Sco<\/td>\n24.0<\/td>\n180<\/td>\n16:21<\/td>\n-26.57<\/td>\n-0.14<\/td>\n<\/tr>\n
\u03c4 Sco<\/td>\n22.4<\/td>\n180<\/td>\n16:32<\/td>\n-28.17<\/td>\n+0.05<\/td>\n<\/tr>\n
\u03b6 Oph<\/td>\n40.0<\/td>\n180<\/td>\n16:32<\/td>\n-10.57<\/td>\n-0.00<\/td>\n<\/tr>\n
\u03b5 Sco<\/td>\n16.1<\/td>\n180<\/td>\n16:42<\/td>\n-34.47<\/td>\n-0.17<\/td>\n<\/tr>\n
\u03bc Sco<\/td>\n12.5<\/td>\n180<\/td>\n16:42<\/td>\n-38.07<\/td>\n-0.02<\/td>\n<\/tr>\n
\u03b7 Oph<\/td>\n35.0<\/td>\n180<\/td>\n17:05<\/td>\n-15.57<\/td>\n+0.15<\/td>\n<\/tr>\n
Jupiter<\/td>\n28.2<\/td>\n180<\/td>\n17:08<\/td>\n-22.37<\/td>\n+0.06<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\nAverage<\/strong><\/td>\n+0.04<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\nStDev<\/strong><\/td>\n0.24<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The second night I was able to observe was 6\/10. The moon phase was a bit more progressed, but there was a lot of haze and seeing 4th magnitude stars was not going to happen. This night, I was assisted by Cathus<\/a> and Ellie again for the Jupiter observations. The Jupiter observations were especially important as on this night, Jupiter was at opposition, and as I’ve noted before, observations at opposition are necessary for determining orbits using Kepler’s methods.<\/p>\n

Before processing these 6\/10 observations, I was quite worried about the data from this night and the previous one. A storm came through and I took the quadrant down to store in my car, and as I did, I noticed the central axle was turned again. This was the same problem I’d had earlier this year<\/a> that resulted in tossing an entire night worth of data; If the axle is rotated the plumb doesn’t hang straight to read from. However, the quadrant arm wasn’t sticking, so I had to hope it hadn’t become an issue until I took it down. Fortunately, after looking at the data, it seems to be the case as the error is within expected values.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Object<\/strong><\/td>\nAlt<\/strong><\/td>\nAz<\/strong><\/td>\nST<\/strong><\/td>\nDec<\/strong><\/td>\nError<\/strong><\/span>5<\/sup><\/a><\/span><\/td>\n<\/tr>\n
\u03b9 Vir<\/td>\n44.4<\/td>\n180<\/td>\n14:16<\/td>\n-6.17<\/td>\n-0.17<\/td>\n<\/tr>\n
\u03b1 Boo<\/td>\n69.9<\/td>\n180<\/td>\n14:19<\/td>\n19.33<\/td>\n+0.16<\/td>\n<\/tr>\n
\u03bc Vir<\/td>\n44.9<\/td>\n180<\/td>\n14:43<\/td>\n-5.67<\/td>\n-0.01<\/td>\n<\/tr>\n
\u03b2 UMi<\/td>\n55.3<\/td>\n0<\/td>\n14:47<\/td>\n74.13<\/td>\n-0.03<\/td>\n<\/tr>\n
\u03b1 Lib<\/td>\n34.3<\/td>\n180<\/td>\n14:49<\/td>\n-16.27<\/td>\n-0.27<\/td>\n<\/tr>\n
\u03b2 Lib<\/td>\n41.1<\/td>\n180<\/td>\n15:17<\/td>\n-9.47<\/td>\n-0.09<\/td>\n<\/tr>\n
\u03b4 Ser<\/td>\n60.9<\/td>\n180<\/td>\n15:32<\/td>\n10.33<\/td>\n-0.21<\/td>\n<\/tr>\n
\u03b1 Ser<\/td>\n57.0<\/td>\n180<\/td>\n15:42<\/td>\n6.43<\/td>\n+0.00<\/td>\n<\/tr>\n
\u03bc Ser<\/td>\n47.0<\/td>\n180<\/td>\n15:47<\/td>\n-3.57<\/td>\n-0.14<\/td>\n<\/tr>\n
\u03b5 Ser<\/td>\n54.95<\/td>\n180<\/td>\n15:49<\/td>\n4.37<\/td>\n-0.11<\/td>\n<\/tr>\n
\u03c1 Sco<\/td>\n21.9<\/td>\n180<\/td>\n15:53<\/td>\n-28.67<\/td>\n+0.54<\/td>\n<\/tr>\n
\u03c0 Sco<\/td>\n24.35<\/td>\n180<\/td>\n15:54<\/td>\n-26.22<\/td>\n-0.11<\/td>\n<\/tr>\n
\u03b4 Sco<\/td>\n28.05<\/td>\n180<\/td>\n16:00<\/td>\n-22.52<\/td>\n+0.10<\/td>\n<\/tr>\n
\u03b2 Sco<\/td>\n30.9<\/td>\n180<\/td>\n16:04<\/td>\n-19.67<\/td>\n+0.14<\/td>\n<\/tr>\n
\u03b1 Sco<\/td>\n24.35<\/td>\n180<\/td>\n16:32<\/td>\n-26.22<\/td>\n+0.21<\/td>\n<\/tr>\n
\u03b6 Oph<\/td>\n39.85<\/td>\n180<\/td>\n16:34<\/td>\n-10.72<\/td>\n-0.15<\/td>\n<\/tr>\n
Jupiter<\/td>\n28.55<\/td>\n180<\/td>\n17:09<\/td>\n-22.02<\/td>\n+0.39<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\nAverage<\/strong><\/td>\n+0.01<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\nStDev<\/strong><\/td>\n0.21<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

My last night of observing was 6\/12. At this point the moon was creeping up on full and all assistants seemed to have other things to do that night. I took a few observations by myself, but ended up turning in early.<\/p>\n\n\n\n\n\n\n\n\n\n
Object<\/strong><\/td>\nAlt<\/strong><\/td>\nAz<\/strong><\/td>\nST<\/strong><\/td>\nDec<\/strong><\/td>\nError<\/strong><\/span>6<\/sup><\/a><\/span><\/td>\n<\/tr>\n
\u03b1 Lib<\/td>\n35.45<\/td>\n180<\/td>\n14:51<\/td>\n-15.12<\/td>\n+0.88<\/td>\n<\/tr>\n
\u03b2 UMi<\/td>\n55.6<\/td>\n0<\/td>\n15:00<\/td>\n73.82<\/td>\n-0.34<\/td>\n<\/tr>\n
\u03c3 Lib<\/td>\n25.3<\/td>\n180<\/td>\n15:06<\/td>\n-25.27<\/td>\n+0.01<\/td>\n<\/tr>\n
\u03b2 Lib<\/td>\n41.0<\/td>\n290<\/td>\n15:16<\/td>\n-9.57<\/td>\n-0.19<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\nAverage<\/strong><\/td>\n+0.09<\/td>\n<\/tr>\n
<\/td>\n<\/td>\n<\/td>\n<\/td>\nStDev<\/strong><\/td>\n0.47<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

With the addition of the new observations, here’s how the star chart looks now.<\/p>\n

\"\"<\/a><\/p>\n

Many of the observations are starting to have multiple observations and a bit of casual inspection indicates that these averages are looking to go a good job of coming closer to a true value than any single observation, which is what we should expect.<\/p>\n

Looking forward, I probably won’t be posting much on the\u00a0Almagest<\/em> because Kingdom A&S is coming up next month. It will be on the 1 year anniversary of first light of the quadrant, so I think it fitting that I do a retrospective of the year’s observations, looking at things far more comprehensively that I have in these posts.<\/p>\n","protected":false},"excerpt":{"rendered":"

This past week was Lilies War, north of Kansas City. With a bit of packing tetris, I was able to fit the full quadrant along with most of my camping gear to attend. Despite Lilies being traditionally extremely hot and stormy, the weather was quite nice this year with highs in the 70’s most days … <\/p>\n

Continue reading “Data: Stellar Quadrant Observations \u2013 Lilies War”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[33],"tags":[38,22],"class_list":["post-1502","post","type-post","status-publish","format-standard","hentry","category-data","tag-observing","tag-quadrant"],"acf":[],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p9ZpvC-oe","_links":{"self":[{"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/posts\/1502","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/comments?post=1502"}],"version-history":[{"count":4,"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/posts\/1502\/revisions"}],"predecessor-version":[{"id":1507,"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/posts\/1502\/revisions\/1507"}],"wp:attachment":[{"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/media?parent=1502"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/categories?post=1502"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jonvoisey.net\/blog\/wp-json\/wp\/v2\/tags?post=1502"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}