POLARIMETER DEVICE PROJECT

Design, construction, tuning of spectroscopes
Information and discussion about softwares (telescope remote, autoguiding, acquisition, spectral processing ...)
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,

We are in the tuning stage of The Giver, fortunately, Martin Dubs gave me some suggestions and tips about TheGiver improvement.

Follow them, I can show their results here. in some steps.

Cheers, J. Guarro.
Attachments
AIS294MM day light grapfics.png
AIS294MM day light grapfics.png (248.25 KiB) Viewed 5095 times
AIS2600MM day light grapfics.png
AIS2600MM day light grapfics.png (253.26 KiB) Viewed 5095 times
betuma_%polarization_COMPARISON views_831_J. Guarro.png
betuma_%polarization_COMPARISON views_831_J. Guarro.png (157.23 KiB) Viewed 5095 times
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,

The graphics sight changes, it depends on the form reduction used.

Regards, J. Guarro.
Attachments
BET UMA  POLARIZATION MONTAGE.png
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,

Fortunately, I have the luck of counting with the help and teaching of Martin Dubs.

So he corrected me about other erroneous interpretations about the "emission" lines in
some Bet Uma graphics and gave me the solution.

The correct way is that all were the result of a divergent position of the halfwave plate
and the Wollaston prism ones as you can see in these images.

Slowly I became more aware of how TheGiver works.

Cheers, J. Guarro.
Attachments
THEGIVER WITH GUIDE RODS 5.png
THEGIVER WITH GUIDE RODS 5.png (73.73 KiB) Viewed 4491 times
THEGIVER WITH GUIDE RODS 6.png
THEGIVER WITH GUIDE RODS 6.png (53.92 KiB) Viewed 4491 times
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,

One finds the most exact point during the optical collimation job of any optical device, the success depends
sometimes on the experience, knowledge, and also of the quantity of components that one has faced.

TheGiver isn't different as you can see here the components that come into play, I believe that I tested and checked
all the possibilities, in addition, it has had a training and learning time for me.

It seems impossible that the light would allow herself to be manipulated in such a "perverse" way.

Then, after some holiday days, TheGiver observation time is coming, if the weather improves on this corner
of the Mediterranean Sea.

Cheers, J. Guarro.
Attachments
THEGIVER SCHEMATIC FINE MOVEMENS.png
THEGIVER SCHEMATIC FINE MOVEMENS.png (46.38 KiB) Viewed 3467 times
MENDING THINGS 1 .png
MENDING THINGS 1 .png (192.22 KiB) Viewed 3467 times
MENDING THINGS2 .png
MENDING THINGS2 .png (213.46 KiB) Viewed 3467 times
MENDING THINGS3 .png
MENDING THINGS3 .png (190.7 KiB) Viewed 3467 times
MENDING THINGS4 .png
MENDING THINGS4 .png (48.02 KiB) Viewed 3467 times
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,

Eventually, TheGiver spectropolarimeter is well collimated and ready for observation now.

The results are extracted first by ISIS to obtain the spectra of every 22.5º step position.
The second step is by POLARIMETRIC, to obtain the polarization % and Theta angle.

Only lack to solve a little problem with the depicts of non-polarized stars. We don't have any
problems with polarized stars in this way, you can see the next graphics.

Best regards, Joan.
Attachments
betcvn_%polarization_20250516_887_J. Guarro.png
betcvn_%polarization_20250516_887_J. Guarro.png (48.18 KiB) Viewed 1380 times
betuma_P+Q+U_20250516_845_J. Guarro.png
betuma_P+Q+U_20250516_845_J. Guarro.png (79.6 KiB) Viewed 1380 times
vcvn_%polarization_20250516_845_J. Guarro.png
vcvn_%polarization_20250516_845_J. Guarro.png (111.78 KiB) Viewed 1380 times
vcvn_theta_20250516_845_J. Guarro.png
vcvn_theta_20250516_845_J. Guarro.png (71.48 KiB) Viewed 1380 times
rscvn_composition2_20250516_845_J. Guarro.png
rscvn_composition2_20250516_845_J. Guarro.png (312.82 KiB) Viewed 1380 times
25-ser_%polarization_20250519_926_J. Guarro.png
25-ser_%polarization_20250519_926_J. Guarro.png (125.68 KiB) Viewed 1380 times
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,
Slowly, I'm going to take more confidence, and practice with TheGiver,
it's easy to arrive at the 8 Visual magnitude.

Fortunately, it works well, you can see here two Be Stars examples.

Cheers, J. Guarro.
Attachments
kap-dra_Q+U_20250523_853_J. Guarro.png
kap-dra_Q+U_20250523_853_J. Guarro.png (110.4 KiB) Viewed 510 times
gp-vir_%polarization+theta_20250524_962_J. Guarro.png
gp-vir_%polarization+theta_20250524_962_J. Guarro.png (156.69 KiB) Viewed 510 times
Joan Guarro Flo
Posts: 678
Joined: Thu Nov 03, 2011 8:50 pm

Re: POLARIMETER DEVICE PROJECT

Post by Joan Guarro Flo »

Hello,

You can see here the Q and U values of weak polarized Be Stars.

J. Guarro.
Attachments
phi-leo_q+u_20250527_846_J. Guarro.png
phi-leo_q+u_20250527_846_J. Guarro.png (77.71 KiB) Viewed 32 times
phecda_q+u_20250527_874_J. Guarro.png
phecda_q+u_20250527_874_J. Guarro.png (79.27 KiB) Viewed 32 times
cq-uma_q+u_20250527_916_J. Guarro.png
cq-uma_q+u_20250527_916_J. Guarro.png (79.54 KiB) Viewed 32 times
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