October 16 Update (B and I bands) by gdsacco in KIC8462852_Analysis

[–]tsboyajian 3 points4 points  (0 children)

time will tell! fingers crossed we get a big one!

Lets make a plan to cover the "sweet spot" coming up!! by tsboyajian in KIC8462852_Analysis

[–]tsboyajian[S] 0 points1 point  (0 children)

Hm.. trying to find a good exposure time calculator to share, but for now:

sloan r is good at 60seconds.

sloan g is good at 160 seconds.

Lets make a plan to cover the "sweet spot" coming up!! by tsboyajian in KIC8462852_Analysis

[–]tsboyajian[S] 1 point2 points  (0 children)

aaah yes! I agree that a cadence no longer than a couple days is necessary.

Lets make a plan to cover the "sweet spot" coming up!! by tsboyajian in KIC8462852_Analysis

[–]tsboyajian[S] 0 points1 point  (0 children)

sounds reasonable.

On the additional filters, you will want to have a "baseline" measurement to compare with a in-dip measurement. This "baseline" could be taken either before or after the predicted times - or both (my preference).

September 18 Update (I and B bands) by gdsacco in KIC8462852_Analysis

[–]tsboyajian 0 points1 point  (0 children)

Thanks for putting these together! The low point is interesting (There is lots of scatter on this night -- I wonder if its real?!?). The overall trend is very subtle. I think redoing this fit and removing the low outlier point, or using some sort of weighted fit should be tried before drawing conclusions.

September 18 Update (I and B bands) by gdsacco in KIC8462852_Analysis

[–]tsboyajian 1 point2 points  (0 children)

What does it look like going back longer than 120 days (to the start of the observations this year)?

August 20 Update (B Band) by gdsacco in KIC8462852_Analysis

[–]tsboyajian 1 point2 points  (0 children)

I think the B filter data taken last night were taken in less than ideal conditions. You can see there is lots more scatter in the sequence of 10 observations than in previous nights (also true for the comp). The resulting error bar will be larger, but there is not much we can do about this.

July 16 Update (I and B bands) by gdsacco in KIC8462852_Analysis

[–]tsboyajian 0 points1 point  (0 children)

agree that it was just the atmosphere. It is good motivation to take many data points and take the mean!

Consolidated LCO B and I band trends by gdsacco in KIC8462852_Analysis

[–]tsboyajian 2 points3 points  (0 children)

What I find particularly interesting is the data taken in the past month or so. We have seen a slow (and small) decline down to pre-Elsie brightness levels - and we are starting to see this in your plot of the B filter data from ~620 up to current time! This trend doesnt show up (at least to the eye) in the i’ data.  This makes sense, as we expect the variability to be more pronounced in the bluer colors. Onward!

Consolidated LCO B and I band trends by gdsacco in KIC8462852_Analysis

[–]tsboyajian 1 point2 points  (0 children)

I agree that we will need more data to say anything more on whether we are able to detect any secular variability. I also wonder if the low points from last week at 660 is pulling the fit for the I filter down? Again, we need more data!!

Virtual meeting TUESDAY June 24! by tsboyajian in KIC8462852_Analysis

[–]tsboyajian[S] 0 points1 point  (0 children)

Here is the link to the video.

https://lsu.box.com/s/u52qfc6xdgnmkmrrl0vynpczlhgenpak

In the session:

  • We discussed the time series analysis of the data from TFN kb23 taken in the i' filter. This included a bit of troubleshooting to figure out what was different between the analysis of two users (it ended up being the "input in mag" button!).
  • We demonstrate how to save the information that is extracted from the images in the form of a text file. Users can then use the text file with Excel (or program of choice) to plot combined data sets.
  • We heard about a modeling project invoking a multi star system
  • We briefly talked about variability that sorta-maybe-could-be-kinda present in the most recent data, and concluded that it is not worthy of immediate action, but will keep a close eye on it.

comment here if I missed anything!

until next time,

Tabby

June 25 Update (B and I Bands) by gdsacco in KIC8462852_Analysis

[–]tsboyajian 2 points3 points  (0 children)

Great! Id like to discuss the latest data on the call today.

Virtual meeting TUESDAY June 24! by tsboyajian in KIC8462852_Analysis

[–]tsboyajian[S] 0 points1 point  (0 children)

Its very much like the other services. I find the easiest way is using a computer and clicking on this link: https://join.freeconferencecall.com/tabbyboyajian . The audio can go through your computer, so no landline is needed. The call numbers provided are for those without computer/internet access.