<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hi Martin,<div class=""><br class=""></div><div class="">Just to be sure, but I guess you already know it, you also have to enter the coordinate for the calculation of the declination. </div><div class=""><br class=""></div><div class="">Phil</div><div class=""><br class=""></div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">On 02 Mar 2018, at 17:22 PM, Martin KERN via Therion <<a href="mailto:therion@speleo.sk" class="">therion@speleo.sk</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="auto" class="">Thanks for your reply Ladislav.<div dir="auto" class=""><br class=""></div><div dir="auto" class="">I know that but the automatic declination is calculated for the first januray of the year which is enter, not for the exact date.</div><div dir="auto" class="">It's not a probleme for the accuracy of the survey ? </div><div dir="auto" class=""><br class=""></div><div dir="auto" class="">Martin K. </div></div><div class="gmail_extra"><br class=""><div class="gmail_quote">Le 2 mars 2018 17:05, "Ladislav Blažek" <<a href="mailto:ladislav@lblazek.cz" class="">ladislav@lblazek.cz</a>> a écrit :<br type="attribution" class=""><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="auto" class="">Hi,<div class=""><br class=""></div><div class="">declination should be calculated automatically based on the survey date.</div><div class="">Declination parameter is for manual correction.<br class=""><br class=""><div id="m_3203758605353509778AppleMailSignature" class="">\LB</div><div class=""><br class="">2. 3. 2018 v 16:29, Martin KERN via Therion <<a href="mailto:therion@speleo.sk" target="_blank" class="">therion@speleo.sk</a>>:<br class=""><br class=""></div><blockquote type="cite" class=""><div class=""><div id="m_3203758605353509778bloop_customfont" style="font-family: Helvetica, Arial; font-size: 13px; margin: 0px;" class=""><p class="MsoNormal"><span lang="EN-GB" class="">Quick
question concerning the magnetic declination.</span></p><p class="MsoNormal">How you indicate
it?</p><p class="MsoNormal"><span lang="EN-GB" class="">Just by entering
the date or with the command <declination>?</span></p><p class="MsoNormal"><span lang="EN-GB" class="">Because when
I just specify the date, the declination which is calculate is for the first January,
even if I specify another month in the centreline (e.g. 28.08.2017). Consequently,
centreline is slightly offset that if I enter the real declination for the date.</span></p><p class="MsoNormal"><span lang="EN-GB" class="">I don’t
know if this shift is important for survey accuracy or if I can ignore it ?</span></p><div class=""><span lang="EN-GB" class=""> </span><br class="webkit-block-placeholder"></div><p class="MsoNormal"><span lang="EN-GB" class="">Thanks and
sorry for all my questions.</span></p><p class="MsoNormal"><span lang="EN-GB" class="">Martin K.</span></p>
</div><br class=""><div id="m_3203758605353509778bloop_sign_1520004480804385024" class="m_3203758605353509778bloop_sign"></div>
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