<html><head><meta http-equiv="Content-Type" content="text/html charset=big5"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><br class=""><div class=""></div><div class="">The 1st case is the same as shown in the attached “Zoom128_5sec.pdf”.</div><div class="">What’s the possible origin to cause the phase shift? </div><div class="">I originally suspect that such a shift is originated from the change in Sky/Ref. freq, but it might be wrong….</div><div class=""><br class=""></div><div class="">Sincerely,</div><div class=""><div class=""><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">--</span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">Lupin Chun-Che Lin</span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">Supporting Scientist of GLT (GreenLand Telescope) project </span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">in Institute of Astronomy and Astrophysics, Academia Sinica,</span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">14F of Astronomy-Mathematics Building (Rm: 1405), </span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">National Taiwan University. </span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan.</span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">Tel: +886-2-2366-5464</span></div><div class="" style="font-family: 新細明體, sans-serif;"><span class="" style="font-size: 12px;">Fax: +886-2-2367-7849</span></div></div></div></div></body></html>