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BSM Berry Transformation Coefficients

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MZK
MZK's picture
BSM Berry Transformation Coefficients

Attached are the BSM_Berry Transformation Coefficients generated in October 2018. Thay are attached as a .ini file that can be opened with a text editor. This .ini file, after deleting the _.txt extension, can be loaded directly into Transform Applier.

The coeffs, which follow, have been added to the VPhot telescope setup.

 

Tbv= 0.973
Tb_bv= 0.009
Tv_bv= 0.027
Tvr= 1.025
Tv_vr= 0.053
Tr_vr= 0.038
Tri= 1.035
Tr_ri= 0.042
Ti_ri= -0.005
Tvi= 1.031
Tv_vi= 0.028
Ti_vi= -0.003
Tr_vi= 0.019

spp
spp's picture
Transforms for BSM_Berry

Ken,

Today I started getting images for BSM_Berry again.  The images are very good, but when I use the VPhot transform tool I have to enter the B-V and V-I color and magnitude transforms "manually" for each measurement. 

I just noticed that the tranforms from your list above (the transforms I am entering for each measurement) are one year old.  Since I'm again getting BSM_Berry images, perhaps there are new transforms also.

Phil

spp
spp's picture
Transforms for BSM_Berry

Never mind.  I just heard from Mike about the plan to make new BSM-Berry transforms.  I'll wait for the new transforms before I start measuring these new images.

Phil

MZK
MZK's picture
Try Again

Phil:

You can wait BUT please open image list again and try to transform 2 images to see if coeffs populate windows NOW??

Ken

PS: I made a little revision to Telescop field in telescope setup.  ;-(

spp
spp's picture
Tried again

Ken,

I just tried the VPhot transform tool with B and V, also V and I images.  The transform coefficients didn't appear the the boxes, and I got the usual error messages when I tried to proceed.

Phil

Ed Wiley_WEY
Ed Wiley_WEY's picture
Me Also

FYI: I had the same problem with my BL Tel images as Phil. I will wait until this gets sorted.

BTW: I am still getting Dennis' R Sct data. I will keep it until I receive word that he is also getting it and then I will delete.

Ed

MSD1948
MSD1948's picture
R Sct data

Ed,

 I have recieved R Sct data for 04/08/2019 from BSM_Berry.

Dennis

 

MZK
MZK's picture
BSM_Berry Transformation Coefficients 190425

Attached are the BSM_Berry Transformation Coefficients generated on April 25, 2019. They are attached as a .ini file that can be opened with a text editor. This .ini file, after deleting the _.txt extension, can be loaded directly into Transform Applier.

The coeffs, which follow, have been added to the VPhot telescope setup.

[Setup]
description= TG - Version TG_V7.3 beta 5, Telescope= Berry, Time created (UT) = 2019_04_25_19:02:14
[Coefficients]
Tbv= 1.024
Tb_bv= 0.060
Tv_bv= 0.031
Tvr= 1.101
Tv_vr= 0.067
Tr_vr= -0.007
Tri= 1.005
Tr_ri= -0.007
Ti_ri= -0.012
Tvi= 1.050
Tv_vi= 0.035
Ti_vi= -0.006
Tr_vi= -0.004
[Error]
Tbv= 0.020
Tb_bv= 0.018
Tv_bv= 0.006
Tvr= 0.008
Tv_vr= 0.014
Tr_vr= 0.005
Tri= 0.011
Tr_ri= 0.005
Ti_ri= 0.007
Tvi= 0.007
Tv_vi= 0.007
Ti_vi= 0.004
Tr_vi= 0.003
[R Squared Values]
Tbv= 0.998
Tb_bv= 0.818
Tv_bv= 0.317
Tvr= 0.991
Tv_vr= 0.419
Tr_vr= 0.020
Tri= 0.976
Tr_ri= 0.017
Ti_ri= 0.017
Tvi= 0.987
Tv_vi= 0.425
Ti_vi= 0.016
Tr_vi= 0.018
 

Mark Blackford
Mark Blackford's picture
Historical TC's for BSM- Berry

Hi,

I am analysing images of V0777 Sgr recorded by BSM-Berry since early 2017. Greg Bolt informs me there have been several camera changes in that time:

"There have been no changes to filters since BSM Berry commenced operations in Perth in early 2015.

But there have been 3 different cameras used (all are ST8):

ST8#1 – 2015 to 2/Sept/2018 (camera failed)

ST8#2 – 23/Sept/2018 to 17/Jan/2019 (temporary replacement)

ST8#3 – 6/Apr/2019 to present (permanent replacement)"

Can someone let me know what the TC's were for eachof these configurations?

It would be very useful if a table of historical TC's could be made available for each of the AAVSOnet telescopes so people analysing old images can use the correct transformation coefficients.

Cheers,

Mark

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