Comment 75 for bug 575621

Revision history for this message
Victor Reijs (appl-victor-reijs) wrote : Re: [Bug 575621] Re: Delta T and lunar acceleration

Hello Allan,

Just tried indeed Athens (484CE) and I also see 05:38 UT (so within the
error range I have). Which DeltaT formula was used at the end
(Stephenson&Morrison 2004)?

The -135 April 15 at 6:09 UT (Babylon) can also be recreated (although it
is not a full eclipse, but almost).

All the best,

Victor

On 28 January 2013 20:06, Victor Reijs <email address hidden> wrote:

> Thanks Allan, I am now downloading it. You did a great job in helping to
> make this available. Will do some testing when the download is finished
> (will take some time).
>
> THANKS.
>
> All the best,
>
> Victor
>
>
> On 28 January 2013 19:27, Allan Johnson <email address hidden> wrote:
>
>> Ok, I'm attaching a copy of the installer I built this morning. I've
>> called it "postRC3". It seems that I've gotten my build process adjusted
>> now to where the resulting installer works without need for the
>> additional hand-copying of dll's that I reported earlier. It's over
>> twice the size of the official installers, but it does seem to work.
>> It's about 160MB.
>>
>> I imagine there will soon be another official RC version that will
>> supersede this, but this should give you something you can test today.
>>
>> You won't see the attachment on the email note. Just click the link to
>> go to the online launchpad bug site, bug number 575621, and you should
>> be able to download the attachment from there.
>>
>>
>> ** Attachment added: "stellarium-0.12.0-postRC3-win32.exe"
>>
>> https://bugs.launchpad.net/stellarium/+bug/575621/+attachment/3504744/+files/stellarium-0.12.0-postRC3-win32.exe
>>
>> --
>> You received this bug notification because you are subscribed to the bug
>> report.
>> https://bugs.launchpad.net/bugs/575621
>>
>> Title:
>> Delta T and lunar acceleration
>>
>> Status in Stellarium:
>> Fix Committed
>>
>> Bug description:
>> Hello all of you,
>>
>> For some reason a full solar eclipse in Athens Greece (Jan 14th, 484 CE
>> around 5:48 UTC while they rise) is not calculated in the same way as
>> several other planetary programs (also using VSOP87/ELP2000:
>> http://www.iol.ie/~geniet/eng/skyprog.htm#Software )
>> So I am trying to find out a few things; do people know what Delta T
>> formula (like the newest one of Stephenson, Morrison 2004?) is being used
>> and what lunar acceleration (-25.7 +/- 0.2 "/year^2) has been used?
>>
>> I get with Stellarium (0.10.4) the max. eclipse around 7:40 UTC (so it
>> is well after rising (2 hours)).
>>
>> Thanks for the feedback. I am new to Stellarium and can't really yet
>> find my way around the vast amount of info, that is why I ask it in
>> this forum.
>>
>> All the best,
>>
>> Victor
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/stellarium/+bug/575621/+subscriptions
>>
>
>