Affiliation
American Association of Variable Star Observers (AAVSO)
Sun, 11/04/2018 - 21:10
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
File Upload
BSM_Berry Coeff 102018.ini_.txt668 bytes
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
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
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. ;-(
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
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
Ed,
I have recieved R Sct data for 04/08/2019 from BSM_Berry.
Dennis
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
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
Transformation Coefficients created on 200510 are attached. They have also been added to VPhot.
[Setup]
description= TG - Version TG_V7.4, Telescope= Berry, Time created (UT) = 2020_05_10_15:58:27
[Coefficients]
Tbv= 1.000
Tb_bv= 0.028
Tv_bv= 0.026
Tvr= 1.067
Tv_vr= 0.062
Tr_vr= 0.003
Tri= 1.029
Tr_ri= 0.003
Ti_ri= -0.023
Tvi= 1.052
Tv_vi= 0.034
Ti_vi= -0.011
Tr_vi= 0.001
[Error]
Tbv= 0.007
Tb_bv= 0.007
Tv_bv= 0.004
Tvr= 0.006
Tv_vr= 0.007
Tr_vr= 0.004
Tri= 0.008
Tr_ri= 0.004
Ti_ri= 0.006
Tvi= 0.006
Tv_vi= 0.004
Ti_vi= 0.003
Tr_vi= 0.002
[R Squared Values]
Tbv= 0.998
Tb_bv= 0.444
Tv_bv= 0.193
Tvr= 0.993
Tv_vr= 0.317
Tr_vr= 0.003
Tri= 0.988
Tr_ri= 0.004
Ti_ri= 0.064
Tvi= 0.993
Tv_vi= 0.330
Ti_vi= 0.063
Tr_vi= 0.003