Hi Antonello
thank you very much
Etalon spacers thickness.
- swisswalter
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Re: Etalon spacers thickness.
Only stardust in the wind, some fine and some less fine scopes, filters and adapters as well. Switzerland 47 N, 9 E, in the heart of EUROPE
from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa
from 7 am - 7 pm http://www.nanosys.ch
from 7.01 pm - 6.59 am http://www.wastronomiko.com some times vice versa
Re: Etalon spacers thickness.
Hello swisswalter
Thank you.
I read this your work:
http://www.wastronomiko.com/images/ausr ... repair.pdf
Congratulations for your patience. Obviously you get more easily success sending all to Oliver Smie or buying a silica wafer with parallelism less of 10 nm. Here are two other suppliers
http://fusedsilicawafers.com/ with prices
http://www.valleydesign.com/index.htm
You can try a microscope slide of 0.2 mm thickness, cutting many small pieces (2x2 mm).
To reduce the error of parallelism, you can put many pieces in circumference between the two glass (also 20 pieces) in order to average the error (not only 3-6 pieces) ...
------------------------------------------------
I tried to play with this program
https://lightmachinery.com/optical-desi ... -designer/
(that I have already mentioned) and I have verified that the correction of lambda / 100 of the optical surfaces is required. Unfortunately, the correction lambda / 10 is NOT sufficient.
The attached charts demonstrate this: NOT is possible, unfortunately , to achieve in own house a Etalon…
Thank you.
I read this your work:
http://www.wastronomiko.com/images/ausr ... repair.pdf
Congratulations for your patience. Obviously you get more easily success sending all to Oliver Smie or buying a silica wafer with parallelism less of 10 nm. Here are two other suppliers
http://fusedsilicawafers.com/ with prices
http://www.valleydesign.com/index.htm
You can try a microscope slide of 0.2 mm thickness, cutting many small pieces (2x2 mm).
To reduce the error of parallelism, you can put many pieces in circumference between the two glass (also 20 pieces) in order to average the error (not only 3-6 pieces) ...
------------------------------------------------
I tried to play with this program
https://lightmachinery.com/optical-desi ... -designer/
(that I have already mentioned) and I have verified that the correction of lambda / 100 of the optical surfaces is required. Unfortunately, the correction lambda / 10 is NOT sufficient.
The attached charts demonstrate this: NOT is possible, unfortunately , to achieve in own house a Etalon…
- Attachments
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- lambda-100.JPG (99.42 KiB) Viewed 2440 times
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- lambda-10.JPG (95.52 KiB) Viewed 2440 times
Re: Etalon spacers thickness.
In Bob's post I see they check etalons by looking at a light, anyone know exactly what light that is and what do they see by looking at it?? Thanks!