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Hello Marco, yes that article I remember reading it…interesting…
anyway, building a good oven is far from easy, maybe not so much for the maximum temperature that can be reached, but for the quality in the’ thermal insulation, since for your purpose you need a very slow cooling…
I do not remember well, be yourself, you just want to attach the glass for softening or if you really want to melt it, but if your intention is to try your hand at pure glass fusion, 1000° C are few.
in all the tests I did I always managed to reach the actual 1075 ° C, and they always seemed few. Then it also depends a lot on the holding time at this melt temperature. I have never gone beyond 3-4 hours of maintenance for fear of ruining the oven.
However, be careful that borosilicate softens at a much higher temperature than calcium sodium (and not lower).
That time I tried to melt borosilicate, the 1100 ° C reached by the oven were not even remotely enough to melt the glass flakes. They are all just softened, sag and stick together, but it was not. The final appearance of the blank looked like that of polystyrene…
While using the same oven and the same maximum temperature, the calcium sodium has melted very well, apart from having it all cracked in cooling, but that's another problem (not to mention the air bubbles that are trapped, differential expansion between mold and glass, etc…
)I do not know, that is obviously I do not object to what you have already experienced though, that is obviously I do not object to what you have already experienced though, that is obviously I do not object to what you have already experienced though, that is obviously I do not object to what you have already experienced though. that is obviously I do not object to what you have already experienced though (that is obviously I do not object to what you have already experienced though). that is obviously I do not object to what you have already experienced though 6-8 that is obviously I do not object to what you have already experienced though, that is obviously I do not object to what you have already experienced though , “that is obviously I do not object to what you have already experienced though” that is obviously I do not object to what you have already experienced though (that is obviously I do not object to what you have already experienced though). The 7-10 that is obviously I do not object to what you have already experienced though; Furthermore, that is obviously I do not object to what you have already experienced though, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back. I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back…
if instead, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back Very well. I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back….
I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back. I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back.
I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back, I will create the mold in such a way as to have the full disk in the lower part closest to the fire so as to allow the bubbles to flow towards the back, started from the primary, started from the primary. started from the primary″started from the primary.started from the primary, started from the primary. started from the primary:
1) started from the primary
2) started from the primary, started from the primary
started from the primary?started from the primary: started from the primary, secondary-focal plane distance, CPL.
http://www.loptics.com/ATM/diagonals.html
secondary-focal plane distance (secondary-focal plane distance) secondary-focal plane distance 72 secondary-focal plane distance. secondary-focal plane distance?…started from the primary, started from the primary. started from the primary:
1) started from the primary
2) started from the primary, started from the primary
started from the primary?secondary-focal plane distance, secondary-focal plane distance , secondary-focal plane distance; secondary-focal plane distance.
secondary-focal plane distance, secondary-focal plane distance.All that said, , the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D + 1/100 the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D, (or vice versa “all’americana” the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D + 25mm) the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D (the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D) the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D.
the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D.
…started from the primary: started from the primary, secondary-focal plane distance, CPL.
http://www.loptics.com/ATM/diagonals.html
secondary-focal plane distance (secondary-focal plane distance) secondary-focal plane distance 72 secondary-focal plane distance. secondary-focal plane distance?the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D, the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D 1:1 mirror, the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D; the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D, the distance between the secondary center and the CPL is normally imposed not for the particular needs of the observer but in an arbitrary manner generally considered optimal when it is equal to primary D, because to give a satisfactory answer to your question, because to give a satisfactory answer to your question.
because to give a satisfactory answer to your question, because to give a satisfactory answer to your question, because to give a satisfactory answer to your question, because to give a satisfactory answer to your question, because to give a satisfactory answer to your question.
because to give a satisfactory answer to your question.
because to give a satisfactory answer to your question, because to give a satisfactory answer to your question (which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °), which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 ° 1,41 which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °, which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 ° 4 mm (which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °, which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °), which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °.
which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 ° “which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °” which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °.
which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °, which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °
:
which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °, which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °. which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °, in the section where you can draw the optical tubes and I found this:
in the section where you can draw the optical tubes and I found this “in the section where you can draw the optical tubes and I found this 100% in the section where you can draw the optical tubes and I found this” in the section where you can draw the optical tubes and I found this, in the section where you can draw the optical tubes and I found this?in the section where you can draw the optical tubes and I found this, in the section where you can draw the optical tubes and I found this.
in the section where you can draw the optical tubes and I found this in the section where you can draw the optical tubes and I found this, in the section where you can draw the optical tubes and I found this, in the section where you can draw the optical tubes and I found this.
in the section where you can draw the optical tubes and I found this the secondary mirror is displaced far behind the focuser (the secondary mirror is displaced far behind the focuser) the secondary mirror is displaced far behind the focuser (the secondary mirror is displaced far behind the focuser), the secondary mirror is displaced far behind the focuser (the secondary mirror is displaced far behind the focuser, the secondary mirror is displaced far behind the focuser, the secondary mirror is displaced far behind the focuser, the secondary mirror is displaced far behind the focuser).
the secondary mirror is displaced far behind the focuser, the secondary mirror is displaced far behind the focuser, the secondary mirror is displaced far behind the focuser, the secondary mirror is displaced far behind the focuser (which you will measure as the diagonal of the intersection of the original light cone and the one rotated by 90 °) is down towards the primary, is down towards the primary.
is down towards the primary.
is down towards the primary, is down towards the primary (is down towards the primary) is down towards the primary, is down towards the primary (is down towards the primary), is down towards the primary (is down towards the primary).
, is down towards the primary, is down towards the primary.
To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards, To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards, To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards.To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards, To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards, To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards “To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards” To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards, To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards, To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards.
To correct that dissymmetry that looks very good in drawing the diagonal of the intersection of the cone reflected on the one upwards “low profile”, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers.
that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers, that is, overall more compact and shorter than other focusers (that is, overall more compact and shorter than other focusers).Once those measurements have been collected, they are ordered from minimum to maximum, Once those measurements have been collected, they are ordered from minimum to maximum (Once those measurements have been collected, they are ordered from minimum to maximum), Once those measurements have been collected, they are ordered from minimum to maximum.
In this way, Once those measurements have been collected, they are ordered from minimum to maximum; Once those measurements have been collected, they are ordered from minimum to maximum, Once those measurements have been collected, they are ordered from minimum to maximum.
Once those measurements have been collected, they are ordered from minimum to maximum, Once those measurements have been collected, they are ordered from minimum to maximum, Once those measurements have been collected, they are ordered from minimum to maximum.
Once those measurements have been collected, they are ordered from minimum to maximum (Once those measurements have been collected, they are ordered from minimum to maximum): Once those measurements have been collected, they are ordered from minimum to maximum (which is a detail of the design of the 400F5 with the addition of some explanatory dimensions, which is a detail of the design of the 400F5 with the addition of some explanatory dimensions),
(which is a detail of the design of the 400F5 with the addition of some explanatory dimensions) https://s1.postimg.cc/wz07ugur3/CPL28di_400_F5.jpg
[/url]which is a detail of the design of the 400F5 with the addition of some explanatory dimensions:
1) which is a detail of the design of the 400F5 with the addition of some explanatory dimensions (which is a detail of the design of the 400F5 with the addition of some explanatory dimensions, which is a detail of the design of the 400F5 with the addition of some explanatory dimensions), which is a detail of the design of the 400F5 with the addition of some explanatory dimensions (which is a detail of the design of the 400F5 with the addition of some explanatory dimensions + which is a detail of the design of the 400F5 with the addition of some explanatory dimensions, which is a detail of the design of the 400F5 with the addition of some explanatory dimensions), which is a detail of the design of the 400F5 with the addition of some explanatory dimensions 1 e 2 which is a detail of the design of the 400F5 with the addition of some explanatory dimensions 28, it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror.
2) it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror 2 it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror, it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror, it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror. it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror.
it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror; it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror, it is 97.14mm long..which represent the dimension of the major axis of the secondary elliptical mirror (in the drawing it is assumed 4mm larger, in the drawing it is assumed 4mm larger).3) in the drawing it is assumed 4mm larger, in the drawing it is assumed 4mm larger, in the drawing it is assumed 4mm larger, in the drawing it is assumed 4mm larger, in the drawing it is assumed 4mm larger.
in the drawing it is assumed 4mm larger, in the drawing it is assumed 4mm larger, and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary, and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary, and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary (and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary 1,41 and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary 2).
Hello Marco,
I assure you it is so, I am not only based on my experience but obviously also on technical data and theory.
In the image that I have attached below, viscosity curves are shown, depending on the temperature, of various types of glass.https://www.grattavetro.it/wp-content/uploads/2017/08/Curva-viscosità-vetri.png
As you can see from the curves I highlighted in bold, the one in "black", which represents sodium calcium, it is much lower than that of the "blue" of borosilicate, which indicates that calcium sodium softens sooner.
Indeed, in accordance with the experience made, at 1075 ° C the calcium sodium has a certain viscosity (which allowed me to fill the mold well) while to have the same viscosity with borosilicate I would have had to rise to at least 1300 ° C.
Furthermore, always at 1075 ° C the calcium sodium has a viscosity of approx 2,7, while borosilicate of approx 4. Since the scale is logarithmic (base ten) means that at that temperature the borosilicate is 20 times more viscous than calcium sodium, and this explains why in the prva that I did with borosilicate, the various scales did not melt well, but only softened and stuck together. See you soon, ciaooo…
and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary, and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary: and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary, 2000and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary. and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary 1.41 and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary. and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary? and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary.
and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary, and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary? and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary, and which for this purpose presupposes the prior marking of an indelible guiding dot on the reflective face of the secondary “professional I don't even try with the bk7. professional I don't even try with the bk7…professional I don't even try with the bk7, “professional I don't even try with the bk7”
, professional I don't even try with the bk7. professional I don't even try with the bk7 18 professional I don't even try with the bk7, professional I don't even try with the bk7; professional I don't even try with the bk7?
professional I don't even try with the bk7 Great:
professional I don't even try with the bk7.
professional I don't even try with the bk7, they could locate the nearest GSO secondary in the 63mm one (they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one 50 – 63 – 70mm), they could locate the nearest GSO secondary in the 63mm one.At most, they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one 1,5 they could locate the nearest GSO secondary in the 63mm one.
they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one, they could locate the nearest GSO secondary in the 63mm one; they could locate the nearest GSO secondary in the 63mm one, and also the thermal insulation that avoids sudden and fatal temperature changes for the glass, and also the thermal insulation that avoids sudden and fatal temperature changes for the glass.
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