Science Imaging

So after the Girl Scouts went to bed, I tried to catch HAT-P-14b in transit. Unfortunately, I must have read the prediction times wrong as it was a no show. So instead I zipped over to V1104 Her, a fast eclipsing binary to see what I could get. Got a little over 3 hours of data and got very lucky on when I started as I began just before one of it's minima. I'm searching to find other EB stars with shorter periods to catch multiple eclipses over the course of the night. Overall I'm pleased with how the LC turned out after I figured out how to scale it properly as in the beginning of the run, AIJ was just giving me a flat line. Also, if anyone can clarify how to read the ETD prediction times. I understand they are in UT but when it lists the available transits, it mentions they're for the UT evening date. So when I bring up the list for the evening of Aug 4 civil time, should I really be looking at the Aug 5 predictions, even though the website will default you to the civil date?

Hey Dan,

Good work on the light curve. I look forward to seeing it. I do not have my laptop right now so I can’t look at the transits for last night. But I will check in with you later today.

Willie

> On Aug 5, 2018, at 05:30, Science Imaging <science-imaging@centexastronomy.org> wrote:
>
> if anyone can clarify how to read the ETD prediction times. I understand they are in UT but when it lists the available transits, it mentions they're for the UT evening date. So when I bring up the list for the evening of Aug 4 civil time, should I really be looking at the Aug 5 predictions, even though the website will default you to the civil date?

Very nice LC. What link are you using to get the transit predictions?

This link will give you the transits for a particular target. In this case HAT-P-14b.

If you have a favorite target, you can bookmark the link and go right to predictions for that target relative to PJMO.

http://var2.astro.cz/ETD/predict_detail.php?delka=262.3257&sirka=31.6811&STARNAME=HAT-P-14&PLANET=b

Willie

Using the link that I posted, I find the following:

Tmid (HJD) BEGIN (UT/h,A) CENTER (DD.MM. UT/h,A) END (UT/h,A)

2458350.669 20.08 2:57 (77°,NW) 20.08. 4:03 (64°,NW) 20.08 5:08 (51°,NW)

This transit begins Aug 19, 2018 at 9:57 pm CDT.

I also double-check my local date using another source, such as Astroplanner or SkySafari, and the JD date listed in the first column.

Willie

Well the formatting of that was wiped out by the server. Here is a screenshot.

Willie

Willie can you send me the image? For CN.

Sent from my iPhone

> On Aug 6, 2018, at 3:07 PM, Science Imaging <science-imaging@centexastronomy.org> wrote:
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> Well the formatting of that was wiped out by the server. Here is a screenshot.
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> Willie
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Everything is in UT, and the JD given is for the middle of the transit.