{"id":369,"date":"2007-10-22T01:51:08","date_gmt":"2007-10-22T01:51:08","guid":{"rendered":"http:\/\/perezmedia.net\/beltofvenus\/2007\/10\/22\/c2007_f1_loneos\/"},"modified":"2021-11-28T00:35:07","modified_gmt":"2021-11-28T00:35:07","slug":"c2007_f1_loneos","status":"publish","type":"post","link":"https:\/\/perezmedia.net\/beltofvenus\/2007\/10\/22\/c2007_f1_loneos\/","title":{"rendered":"C\/2007 F1 (LONEOS) &#8211; OCT 21, 2007"},"content":{"rendered":"<p style=\"text-align: center\"><a href=\"javascript:myVoid()\" onmouseover=\"rollover('img2007102101')\" onmouseout=\"rollout('img2007102101')\"><img decoding=\"async\" src=\"images\/2007\/img2007102101_C2007F1A.jpg\" name=\"img2007102101\" alt=\"Step 1\" border=\"1\" color=\"FFFFFF\"><\/a><br \/>\n<script type=\"text\/javascript\"><br \/>\n<!--\nsetrollover(\"images\/2007\/img2007102101_C2007F1B.jpg\");\n\/\/--><br \/>\n<\/script><br \/>\n<i>Move mouse over sketch above to view labels.<\/i><\/p>\n<p style=\"text-align: center\"><a href=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2007\/img2007102102_C2007F1lg.jpg\"><img decoding=\"async\" src=\"http:\/\/www.perezmedia.net\/beltofvenus\/archives\/images\/2007\/img2007102102_C2007F1.jpg\"><\/a><br \/>\n<i>Click sketch above to view larger image.<\/i><\/p>\n<p><b>Observation Notes:<\/b><\/p>\n<p>Driving back from Phoenix with the latest addition to our telescope family (an Orion XT8 Dobsonian!), I took a detour to McMillan Mesa with the kids to have a look at C\/2007 F1 (LONEOS). Although the heavy-hitting NEO surveys like SWAN and LINEAR are catching the majority of the newly discovered comets and asteroids, this one was picked up by Flagstaff&#8217;s own LONEOS observatory on March 19, 2007. It&#8217;s a horizon scraper and is currently glowing at magnitude 6. When we arrived at the top of the mesa, I broke out the 15 x 70 binoculars and hunted it down in the blue-gray twilight between Arcturus and the trees along the horizon. It was nestled just outside the hypotenuse of a right-triangle of stars that included 14 and 18 Bo\u00c3\u00b6tis. The comet&#8217;s soft glow had a slight hint of turquoise, and displayed a sharp central condensation.<\/p>\n<p>Since it appeared so clearly through binoculars, I quickly set up the XT8 and gave it a shot. The coma displayed a more prominent turquoise color, with an almost stellar core. As I hunted for evidence of a tail, I began to detect an elongation pointed north, at a PA between 0 and 345 degrees. The broad appearance suggested I was seeing a dust tail rather than the ion tail. It was not very distinct, but I was surprised to find it pointing almost directly north. Worried that I may have been hallucinating, I checked out some recent observations when I got home and noted that others were noting a similar position for the dust tail. Because I wasn&#8217;t prepared to make a comet observation, I made rough sketches with pen on the back of a folded sheet of paper, and then recreated the sketches digitally at home. Because of the hurried nature of the sketch, the telescope observation isn&#8217;t displayed with an eyepiece field stop for reference.<\/p>\n<table color=\"ffffff\" width=\"470\" border=\"0\" cellspacing=\"2\" cellpadding=\"4\" style=\"line-height: 150%\">\n<tbody>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Subject<\/b><\/td>\n<td bgcolor=\"#3f4d6d\"><b style=\"color: white\">C\/2007 F1 (LONEOS)<\/b><\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Classification<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">Comet<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Position*<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">Bo\u00c3\u00b6tes: [RA: 14:17:29.6 \/ Dec: +13:25:24]<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Size<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">Not estimated<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Brightness*<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">~ 6 vMag<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Date\/Time<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">October 21, 2007, 6:45 &#8211; 7:00 PM<br \/>\n(October 22, 2007, 01:45 &#8211; 02:00 UT)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Observing Loc.<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">McMillan Mesa, Flagstaff, AZ<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Instrument<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">Oberwerk 15 x 70 Binoculars<br \/>\nOrion XT8 Dobsonian (203 mm dia.\/1200 mm F\/L)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Eyepieces\/Mag.<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">25 mm Sirius Pl\u00c3\u00b6ssl (48X)<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Conditions<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">Partly Cloudy, windy<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Seeing<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">2\/10 Pickering<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>Transparency<\/b><\/td>\n<td bgcolor=\"#3f4d6d\">~ Mag 4.5 NELM<\/td>\n<\/tr>\n<tr>\n<td bgcolor=\"#3f4d6d\"><b>*Sources<\/b><\/td>\n<td bgcolor=\"#3f4d6d\"><a href=\"http:\/\/www.aerith.net\/comet\/catalog\/2007F1\/2007F1.html\" target=\"_blank\" rel=\"noopener\">Aerith.net<\/a>; Starry Night Pro Plus 5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>*Based on published data.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>C\/2007 F1 (LONEOS) 20071021<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[10,45,15],"tags":[],"class_list":["post-369","post","type-post","status-publish","format-standard","hentry","category-comet","category-sg-comet","category-sketch-gallery"],"jetpack_featured_media_url":"","jetpack-related-posts":[{"id":373,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/10\/27\/c2007_f1_loneos_1\/","url_meta":{"origin":369,"position":0},"title":"C\/2007 F1 (LONEOS) &#8211; OCT 26, 2007","author":"jperez1690","date":"October 27, 2007","format":false,"excerpt":"C\/2007 F1 (LONEOS) 20071026","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":17,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/comet_sketches\/","url_meta":{"origin":369,"position":1},"title":"Comet Sketches","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Comet Sketches","rel":"","context":"In &quot;Gallery&quot;","block_context":{"text":"Gallery","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/gallery\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":370,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/10\/25\/p17_holmes\/","url_meta":{"origin":369,"position":2},"title":"17P \/ Holmes &#8211; OCT 24, 2007","author":"jperez1690","date":"October 25, 2007","format":false,"excerpt":"17P\/Holmes 20071024","rel":"","context":"In &quot;Comet&quot;","block_context":{"text":"Comet","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/comet\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":430,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/binocular_sketc\/","url_meta":{"origin":369,"position":3},"title":"Binocular Sketches","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Binocular Sketches","rel":"","context":"In &quot;Gallery&quot;","block_context":{"text":"Gallery","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/gallery\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":331,"url":"https:\/\/perezmedia.net\/beltofvenus\/2007\/05\/21\/the_loneos_dome\/","url_meta":{"origin":369,"position":4},"title":"The LONEOS Dome by Starlight","author":"jperez1690","date":"May 21, 2007","format":false,"excerpt":"LONEOS Dome by Starlight","rel":"","context":"In &quot;Astro Photography&quot;","block_context":{"text":"Astro Photography","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/astro-photography\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":21,"url":"https:\/\/perezmedia.net\/beltofvenus\/2004\/08\/01\/published_mater\/","url_meta":{"origin":369,"position":5},"title":"Published Material","author":"jperez1690","date":"August 1, 2004","format":false,"excerpt":"Updated December 25, 2010 Books Astronomical Sketching: A Step-by-Step Introduction (Patrick Moore's Practical Astronomy Series) By Richard Handy, David B. Moody, Jeremy Perez, Erika Rix, Sol Robbins.Published by Springer, 2007. Contributed three chapters: Comets, Star Clusters, and Nebulae. Stargazing with Binoculars Firefly book by Robin Scagell and David Frydman -\u2026","rel":"","context":"In &quot;General&quot;","block_context":{"text":"General","link":"https:\/\/perezmedia.net\/beltofvenus\/category\/general\/"},"img":{"alt_text":"","src":"http:\/\/www.assoc-amazon.com\/e\/ir?t=thbeofve-20&l=as2&o=1&a=0387262407","width":350,"height":200},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/369","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/comments?post=369"}],"version-history":[{"count":1,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/369\/revisions"}],"predecessor-version":[{"id":851,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/posts\/369\/revisions\/851"}],"wp:attachment":[{"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/media?parent=369"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/categories?post=369"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/perezmedia.net\/beltofvenus\/wp-json\/wp\/v2\/tags?post=369"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}