しし座流星群観測報告

<BODY marginwidth="20" marginheight="20" topmargin="20" leftmargin="20"> <DIV class="standard_width"> <H1>■しし座流星群観測報告</H1> <P>この1ヶ月間、なかなかハードでした。旬休１日、○○と文化の日が無かったら26日連続勤務！？だったかも･･･　こうして勝ち取った、今回のしし群休暇です。それはさておき今年のしし群、「従来の定説」では活動期も過ぎ、低調な活動へと戻っていく時期ですが、ダストトレイルの計算によると今年も多少の見込みが。どうやら今年は<STRONG>20日明け方が狙い目</STRONG>のようです（L!bは上記の通りなうえ、裏管理人も”猫暴走”により制御不能と化し、情報更新できませんでした、すみません）。果たしてピークを捉えることができるでしょうか？　そして、来年への布石もかねて･･･　それでは、<STRONG>「突発群監視強化3カ年計画1年目第2.5弾」しし群（＋α）</STRONG>、行ってみましょう。</P> <HR size="1"> <H3>■観測結果</H3> <TABLE border="0" width="480" cellspacing="1" cellpadding="1" align="center"> <TR valign="top"> <TD><STRONG>観測地：</STRONG></TD> <TD>竜天天文台公園（岡山県赤磐郡吉井町）　標高470m<BR> 東経134°00′08″　北緯34°53′38″　（世界測地系）</TD> </TR> <TR valign="top"> <TD><STRONG>観測者：</STRONG></TD> <TD>L!b</TD> </TR> <TR valign="top"> <TD><STRONG>観測方法：</STRONG></TD> <TD>眼視計数観測</TD> </TR> </TABLE> <TABLE border="0" width="480" cellspacing="0" cellpadding="1" align="center"> <TR valign="bottom"> <TH class="tone4"><SPAN class="white">日付</SPAN></TH> <TH class="tone4"><SPAN class="white">開始</SPAN></TH> <TH class="tone4"><SPAN class="white">終了</SPAN></TH> <TH class="tone4"><SPAN class="white">分</SPAN></TH> <TH class="tone4"><SPAN class="white">全<BR>流<BR>星</SPAN></TH> <TH class="tone4"><SPAN class="white">散<BR>在</SPAN></TH> <TH class="tone4"><SPAN class="white">し<BR>し</SPAN></TH> <TH class="tone4"><SPAN class="white">お<BR>う<BR>し<BR>北</SPAN></TH> <TH class="tone4"><SPAN class="white">お<BR>う<BR>し<BR>南</SPAN></TH> <TH class="tone4"><SPAN class="white">う<BR>み<BR>へ<BR>び</SPAN></TH> <TH class="tone4"><SPAN class="white">い<BR>っ<BR>か<BR>く<BR>じ<BR>ゅ<BR>う</SPAN></TH> <TH class="tone4"><SPAN class="white">χ<BR>オ<BR>リ<BR>オ<BR>ン</SPAN></TH> <TH class="tone4"><SPAN class="white">最<BR>微</SPAN></TH> <TH class="tone4"><SPAN class="white">雲<BR>量</SPAN></TH> <TH class="tone4"><SPAN class="white">方<BR>向</SPAN></TH> </TR> <TR> <TD colspan="15" class="tone2"><STRONG>　2004年11月</STRONG></TD> </TR> <TR> <TH class="tone0"><SPAN class="color">19/20日</SPAN></TH> <TH class="tone0"><SPAN class="color">1:00</SPAN></TH> <TH class="tone0"><SPAN class="color">2:00</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">21</SPAN></TH> <TH class="tone0"><SPAN class="black">7</SPAN></TH> <TH class="tone0"><SPAN class="red">8</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.4</SPAN></TH> <TH class="tone0"><SPAN class="color">0.0</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">　</SPAN></TH> <TH class="tone0"><SPAN class="color">3:30</SPAN></TH> <TH class="tone0"><SPAN class="color">4:30</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">34</SPAN></TH> <TH class="tone0"><SPAN class="black">10</SPAN></TH> <TH class="tone0"><SPAN class="red">20</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.4</SPAN></TH> <TH class="tone0"><SPAN class="color">0.2</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">　</SPAN></TH> <TH class="tone0"><SPAN class="color">4:30</SPAN></TH> <TH class="tone0"><SPAN class="color">5:30</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">26</SPAN></TH> <TH class="tone0"><SPAN class="black">10</SPAN></TH> <TH class="tone0"><SPAN class="red">14</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.4</SPAN></TH> <TH class="tone0"><SPAN class="color">0.0</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">20/21日</SPAN></TH> <TH class="tone1"><SPAN class="color">1:30</SPAN></TH> <TH class="tone1"><SPAN class="color">2:30</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">18</SPAN></TH> <TH class="tone1"><SPAN class="black">10</SPAN></TH> <TH class="tone1"><SPAN class="red">2</SPAN></TH> <TH class="tone1"><SPAN class="black">2</SPAN></TH> <TH class="tone1"><SPAN class="black">3</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="color">6.4</SPAN></TH> <TH class="tone1"><SPAN class="color">0.0</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">　</SPAN></TH> <TH class="tone1"><SPAN class="color">2:30</SPAN></TH> <TH class="tone1"><SPAN class="color">3:30</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">19</SPAN></TH> <TH class="tone1"><SPAN class="black">10</SPAN></TH> <TH class="tone1"><SPAN class="red">4</SPAN></TH> <TH class="tone1"><SPAN class="black">3</SPAN></TH> <TH class="tone1"><SPAN class="black">2</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">-</SPAN></TH> <TH class="tone1"><SPAN class="color">6.4</SPAN></TH> <TH class="tone1"><SPAN class="color">0.0</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">21/22日</SPAN></TH> <TH class="tone0"><SPAN class="color">2:00</SPAN></TH> <TH class="tone0"><SPAN class="color">3:00</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">19</SPAN></TH> <TH class="tone0"><SPAN class="black">13</SPAN></TH> <TH class="tone0"><SPAN class="red">1</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.3</SPAN></TH> <TH class="tone0"><SPAN class="color">0.0</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">　</SPAN></TH> <TH class="tone0"><SPAN class="color">3:00</SPAN></TH> <TH class="tone0"><SPAN class="color">4:00</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">16</SPAN></TH> <TH class="tone0"><SPAN class="black">7</SPAN></TH> <TH class="tone0"><SPAN class="red">5</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">2</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.3</SPAN></TH> <TH class="tone0"><SPAN class="color">0.0</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone0"><SPAN class="color">　</SPAN></TH> <TH class="tone0"><SPAN class="color">4:37</SPAN></TH> <TH class="tone0"><SPAN class="color">5:37</SPAN></TH> <TH class="tone0"><SPAN class="color">60</SPAN></TH> <TH class="tone0"><SPAN class="black">24</SPAN></TH> <TH class="tone0"><SPAN class="black">16</SPAN></TH> <TH class="tone0"><SPAN class="red">7</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">1</SPAN></TH> <TH class="tone0"><SPAN class="black">0</SPAN></TH> <TH class="tone0"><SPAN class="black">-</SPAN></TH> <TH class="tone0"><SPAN class="color">6.2</SPAN></TH> <TH class="tone0"><SPAN class="color">0.2</SPAN></TH> <TH class="tone0"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">22/23日</SPAN></TH> <TH class="tone1"><SPAN class="color">2:30</SPAN></TH> <TH class="tone1"><SPAN class="color">3:30</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">11</SPAN></TH> <TH class="tone1"><SPAN class="black">6</SPAN></TH> <TH class="tone1"><SPAN class="red">2</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="color">6.3</SPAN></TH> <TH class="tone1"><SPAN class="color">0.0</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">　</SPAN></TH> <TH class="tone1"><SPAN class="color">3:30</SPAN></TH> <TH class="tone1"><SPAN class="color">4:30</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">17</SPAN></TH> <TH class="tone1"><SPAN class="black">10</SPAN></TH> <TH class="tone1"><SPAN class="red">4</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="color">6.4</SPAN></TH> <TH class="tone1"><SPAN class="color">0.0</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone1"><SPAN class="color">　</SPAN></TH> <TH class="tone1"><SPAN class="color">4:30</SPAN></TH> <TH class="tone1"><SPAN class="color">5:30</SPAN></TH> <TH class="tone1"><SPAN class="color">60</SPAN></TH> <TH class="tone1"><SPAN class="black">16</SPAN></TH> <TH class="tone1"><SPAN class="black">9</SPAN></TH> <TH class="tone1"><SPAN class="red">4</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">1</SPAN></TH> <TH class="tone1"><SPAN class="black">0</SPAN></TH> <TH class="tone1"><SPAN class="color">6.4</SPAN></TH> <TH class="tone1"><SPAN class="color">0.0</SPAN></TH> <TH class="tone1"><SPAN class="color">Z</SPAN></TH> </TR> <TR> <TH class="tone2"><SPAN class="color">合計</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">660</SPAN></TH> <TH class="tone2"><SPAN class="black">221</SPAN></TH> <TH class="tone2"><SPAN class="black">108</SPAN></TH> <TH class="tone2"><SPAN class="red">71</SPAN></TH> <TH class="tone2"><SPAN class="black">9</SPAN></TH> <TH class="tone2"><SPAN class="black">14</SPAN></TH> <TH class="tone2"><SPAN class="black">9</SPAN></TH> <TH class="tone2"><SPAN class="black">8</SPAN></TH> <TH class="tone2"><SPAN class="black">2</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> <TH class="tone2"><SPAN class="color">　</SPAN></TH> </TR> </TABLE> <P><IMG alt="ＨＲ" src="hr.gif" width="480" height="240"></P> <HR size="1"> <H3>■観測日記</H3> <H5>●11月19/20日</H5> <UL> 母彗星回帰による活動期も過ぎ、さらに通常極大の２夜後･･･ダストトレイル理論が定着する以前なら、こんなときに特に注意することも無かったでしょう。さて、問題のトレイルですが、再接近は夜明け頃。さらに当日の天気予報も西から回復の見込み･･･　天は「西に行け！」といっています。というわけで、天意に沿って(笑)やってきました竜天へ。夜半も過ぎ、ぼちぼち観測条件もよくなってきた1:00より観測開始。なんだか結構出てる感じ･･･　このまま夜明けまで観測と行きたかったところですが、この1ヶ月の無理が祟ってか、身体的に到底保ちそうに無かったので、明け方2時間に備え早々に｢スタンバイ｣モードに突入。そして3:20、スタンバイより復帰してみると･･･雲がで～ろでろ！　どうやらこの間、ほとんど曇っていた模様。しかしその雲も、観測を再開した3:30より急速に取れ、以降は明け方まで快晴でした。さて、しし群ですが、当初予想とは多少異なり、3:30－4:30にピークを観測しました。ともあれ、無事トレイルによると思われる出現を確認でき、まずは目的達成！ </UL> <H5>●11月20/21日</H5> <UL> 昨夜の観測でまずは最大の目標を達成し、しし群の活動も残るは末期。観測の主眼は｢来年への布石｣へとシフトです。今夜は1:30より、4時間の予定で観測開始。だったのですが、溜まった疲れは容易に取れないのか(人、それを｢歳｣という･･･)、2時間にて限界、スタンバイモードに。1時間で復帰の予定だったのですが、またしてもスタンバイに入った途端、雲が出たようで、結局そのまま夜明けを迎えてしまいました。 </UL> <H5>●11月21/22日</H5> <UL> 次第に大きくなる月に追いやられ･･･今夜は2:00より観測スタート。そして今夜も2時間にてスタンバイモードに。夜明けまでの時間を考慮して30分足らずで復帰してみると、またしても雲がで～ろでろ！　どうやらL!bが力尽きると雲が湧くようです(笑)。しかしその雲も復帰とともに程なく消え去り、何とか残り1時間観測。さて、今夜はしし群の火球が一発！　永続痕が30秒以上見えていました。 </UL> <H5>●11月22/23日</H5> <UL> 今回の観測行も今夜が最終夜、まだ月の残る2:30より観測開始です。観測開始まで体力回復に努めたおかげで、これまでよりはましな体調で観測に臨めたのですが･･･それにしても少ないなぁ。 </UL> <HR size="1"> <P>というわけで、４夜連続天気に恵まれました。ほとんど曇られた記憶がない(笑)。そして、無事、しし群のピークを捕らえることができました。ま、｢第２弾｣の雪辱といったとこでしょうか。</P> <DIV align="right" class="author">〔L!b〕</DIV> <HR size="1"> <DIV align="right" class="jump">｜<A href="../../index.html" target="_top">観測報告2004</A>｜<A href="../../../index.html" target="_top">観測報告</A>｜<A href="../../../../index.html" target="_top">観測</A>｜<A href="../../../../../../index.html" target="_top">まるせのぺーじ</A>｜</DIV> </DIV> </BODY>