Just a few more days until the midpoint of the HD 156846b transit opportunity, which is a tough, but in my opinion, highly worthwhile challenge for small-telescope photometric observers. Given the parent star’s -19 degree declination, the best opportunities are south of the border. There is even speculation that an Antarctic time series will be obtained.
As is often the case, observers worldwide will be struggling with high air masses and twilight conditions. Because of this, it’s very important to obtain baseline photometry of HD 156846 on several nights both before and after the main opportunity. This will help inoculate against instances of transit fever.
And when the data come in? Lubos Brat has set up a globally accessible drop at the ETD, which I highly recommend. Quoting Lubos:
Photometry should be uploaded to TRESCA Observer’s log at http://var2.astro.cz/EN/obslog.php. Please use the target name HD156846 and observers project TRESCA while uploading the data. All data will be aggregated, and everybody can see the joined results at the page:
http://var2.astro.cz/EN/obslog.php?obs_id=1&projekt=TRESCA&star=HD156846HOW TO START TO USE the Observer’s log:
1) Sign in to the var2.astro.cz server.
2) Click to link Observer’s logs
3) Click to Insert new data (Type object name HD156846 and observer project TRESCA)
4) With first data, your observer’s log will be created.
5) All questions can be sent to brat@pod.snezkou.cz
Here’s to clear skies!