Object: (54598) Bienor
Object Type: Centaur
Event Date: 2015 December 5 UT
Geocentric Approach: 07:43:57 UT
RA: 01:58:49.6 (of date)
DEC: +33:14:01 (of date)
Observing Times: See RECON Event Detail Page for additional information, including a global map showing the predicted centerline, details about the event, a star training set, and observing window for each RECON site.
There are two options for indicating that your team is prepared for this event. You can use either option – whichever is easier for you.
- Complete a Pre-Event Confirmation Form for Bienor. (We will sign up on OccultWatcher for you.)
- Sign up for the event using OccultWatcher on your own
If there are technical or scheduling issues, please contact the RECON leadership team by emailing firstname.lastname@example.org.
This is the second of two official campaigns scheduled for the first week of December 2015. This star for this event is VERY faint; if you are lucky, you will just be able to see it in the camera image. Because of this, having a very sharp focus will be essential for getting good data, so please remember to use your Bahtinov Mask to focus prior to the event. In addition, an advanced technique for focusing involves looking for really faint stars in the field that just become visible when in sharp focus but are not visible when out of focus. We recommend checking out a recently added guide titled Focusing Tips.
We have also received an updated prediction map based on additional astrometry. This update as of December 3 placed the shadow path over Northern California/Southern Oregon.
You should make one continuous recording of the event. You should also make a separate short recording of your position information using the switch on the front of the IOTA-VTI box. Adjust the switch to POSITION, record the screen showing your latitude/longitude for 3-5 seconds, and then adjust the switch back to TIME. Thank you for keeping track of your observations using the RECON Observation Logsheet.
The following chart was generate using the AAVSO Variable Star Plotter:
Here is an additional chart provided by Jerry Bardecker using Guide 9.0:
Images of Star Field
Note that the target star is VERY faint; if you are lucky, you will just be able to see it in the camera image. Do your best to focus the camera as sharply as possible (see guide with Focusing Tips).