Search found 275 matches

by Valery
Tue Dec 25, 2018 7:03 am
Forum: AgX
Topic: Silver Halide Recipe / Formula please
Replies: 8
Views: 12488

Re: Silver Halide Recipe / Formula please

For over 20 years, I have been using only my silver halide emulsion. Synthesis and watering do yourself on the glass and film. The main wavelengths are sensitized at 633 nm, 532 nm and 488 nm. I do and color. Some holograms on this material can be seen. https://www.ebay.com/sch/s_m_a_k/m.html?_nkw=&...
by Valery
Mon Dec 17, 2018 3:28 am
Forum: Beginning Holography
Topic: Buzzing HeNe laser
Replies: 7
Views: 11159

Re: Buzzing HeNe laser

What is the length of the resonator tube? It is possible that the power supply operates in the ignition mode. not enough working current 11 ma for work.I don’t recommend it for a long time, the power supply may burn or a high voltage will be blown somewhere, and then a high voltage will constantly b...
by Valery
Tue Nov 13, 2018 4:57 am
Forum: For Sale / Want to Buy / Trade
Topic: RGB laser engine , with wired drivers
Replies: 23
Views: 23906

Re: RGB laser engine , with wired drivers

Hello
What is the polarization of all three lasers?
Is everyone the same?
Valery
by Valery
Sun Oct 07, 2018 1:55 pm
Forum: For Sale / Want to Buy / Trade
Topic: Looking for spatial filters
Replies: 6
Views: 4783

Re: Looking for spatial filters

But now I have stopped using spatial filters and only use homemade lenses, they are much easier to clean and install. All my holograms are made like this. ;)
https://holographyforum.org/forum/viewt ... =19&t=8891
by Valery
Sun Oct 07, 2018 1:50 pm
Forum: For Sale / Want to Buy / Trade
Topic: Looking for spatial filters
Replies: 6
Views: 4783

They are very easy to make yourself.
As I did, I can report them, but unfortunately only in Russian.
by Valery
Mon Sep 24, 2018 1:49 am
Forum: Beginning Holography
Topic: Troubleshooting : emulsion peeling off
Replies: 9
Views: 8103

Re: Troubleshooting : emulsion peeling off

Hey by the way Valéry I think I just ordered your telescope hologram on eBay :-) ( Loïc )
All these holograms are made in GP-2 without bleaching !!
by Valery
Mon Sep 24, 2018 1:46 am
Forum: Beginning Holography
Topic: Troubleshooting : emulsion peeling off
Replies: 9
Views: 8103

Re: Troubleshooting : emulsion peeling off

Can we really « not » bleach a hologram ??
I thought light would not penetrate the braggs structure and would not play back as 3d image ?
I use GP-2 always without bleaching.
The exception is if you need to make a hologram of a transmissive for 532 and 488 nm
Good luck
by Valery
Sun Sep 23, 2018 7:04 am
Forum: Beginning Holography
Topic: Troubleshooting : emulsion peeling off
Replies: 9
Views: 8103

Re: Troubleshooting : emulsion peeling off

I hope you know how to work without bleaching. for Denisyuk
Hyposulfite fixer
by Valery
Sun Sep 23, 2018 5:39 am
Forum: For Sale / Want to Buy / Trade
Topic: Osram PL530 530nm laser diodes tested @75mw SLM
Replies: 72
Views: 144900

Re: 530nm laser diodes tested @75mw SLM

Perfectly !!!
is there such an opportunity with the red?
Valery.
by Valery
Sun Sep 23, 2018 5:34 am
Forum: Beginning Holography
Topic: Troubleshooting : emulsion peeling off
Replies: 9
Views: 8103

Re: Troubleshooting : emulsion peeling off

Use GP-2, maybe this will help.
Who is the manufacturer of photographic plates?