Please report here any bug found on this version as comment to this post. I’ll do the same.
#I0014 - ALLSKYMAP - When selected on program starting the "All Sky Map" checkBox were not activated. SOLVED. #I0015 - EQTView / HORView - When PopUp Menu is activated User Defined Timer (UDC) is stopped as expected but the UDC Led is not turned off. SOLVED. #I0016 - Date input fields (Y,M,D) have now a better control over allowed values, included non existent dates due to the Gregorian calendar revision (October 5 to 14, 1582). #I0017 - Jupiter's Moon magnitude were not computed. SOLVED. #F0020 - ALLSKYMAP - Changed BG color. Now the map is configurable via Preferences Window. #F0021 - New graphic library BGRABitmap added.
Hi
This new version has many new features which greatly improve the previous one.
I check the new version with the lunar occultation of Aldebaran in 1347 : https://astrosociety.org/news-publications/mercury-online/mercury-online.html/article/2019/05/08/the-occultation-of-aldebaran-in-1347
Simon Bredon witnessed this spectacle on September 25, 1347. His likely location was Oxford, as he was a scholar at Merton College there from 1330-1348. Merton college is located 51°45’04.1″N 1°15’03.4″W.
SkyCharts (Patrick Chevalley) and Uruk_One both with DE431 display same results so your calculations are good.
Now, according to Paris Observatory (https://www.imcce.fr/newsletter/html/newsletter.html), the time of 2020 Autumn Equinox is : 22 September 2020, 13 h 30 min 40.52 s UTC (RA = 11 h 59 min 59,995 s). Uruk_One with DE438 yields 13 h 30 m 38.91 s UTC (RA = 11h 59 min 59.822 s JNOW). Very good!
The other features seem to work well.
Thanks for the hard work.
Best regards
Hi,
thanks for testing. 🙂
Alberto Cavalli
Hi again
In this paper http://adsabs.harvard.edu/full/2000JHA….31..342S, a Lunar occultation of Mars observed by Aristotle, Stephenson, F. R. confirms this occultation was observed on 4 May 357 BC (-356).
Using Uruk-One with DE431, the occultation starts at 18:16:54 UT and ends at 19:34:33 UT. Besides Aristotle states that the Moon was half full : this is what Uruk-One shows. So calculations and graphical representation are good. Altitude of Moon at the start of the event is 58°, same as calculated by Stephenson.
Best regards
WordPress (or this theme maybe) doesn’t like Harvard.edu links. I’ve found the article so let’s see if I can put online a working link for Stephenson’s paper.
“http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2000JHA….31..342S&defaultprint=YES&filetype=.pdf”
Ok, looks like if one inserts a double quoted link all the text is preserved. It’s not clickable for going to the linked site but a copy and paste (without “) works.
I have implemented SOAID for checking the position of hidden stars during an occultation. But there’s a little trick for doing the same with planets. Start tracking for the hidden planet, turn CrossHair On and the job is done.
Thank you for your reply.
I use SOAID and follow your advice for the hidden planets during an occultation : it works perfectly well.
Many thanks.
Regarding the ADS link : http://adsabs.harvard.edu/full/2000JHA….31..342S : if I copy the link on Google Chrome I can display the ADS page. If I try to access ADS on your page, I receive the message : Requested scanned pages are not available. Strange behavior ! If I select “print this article”, there is an other link :http://articles.adsabs.harvard.edu/cgi-bin/nph-iarticle_query?2000JHA….31..342S&classic=YES
I wonder if this link works ? The mysteries of Internet…
.
HI
According to the Gregorian calendar, Thursday 4 October 1582 was followed by Friday 15 October 1582 as you know of course. In Stellarium or SkyCharts, for instance, if I select 4 October 1582, the next day is 15 October 1582. Now, using Uruk_One, if I select the date 4 October 1582 and set Time Change to days, by clicking +, the day change to 15 October. But if I input in the Input TDT window 5…14 for the day, there is no alert message. For instance, If I set the date to 12 October, the Input TDT windows shows 1582 10 12 but in the EQT or HOR windows the date (TDT, UT…) is 22 10 1582.
Regards
Yes, you are right. I have to add an input check for non existing dates, such as October 5-14, 1582.
Alberto Cavalli