Search found 77 matches
- Sun Dec 22, 2019 4:46 am
- Forum: Beginning Holography
- Topic: Buzzing HeNe laser
- Replies: 7
- Views: 13514
Re: Buzzing HeNe laser
That’s a brilliant idea xD although i’ll have to find a bag which can trap helium tight enough will try this
- Sat Dec 21, 2019 10:10 am
- Forum: Beginning Holography
- Topic: Buzzing HeNe laser
- Replies: 7
- Views: 13514
Re: Buzzing HeNe laser
Just to close this subject, the problem was the laser required a bit more than its regular 11mA current to keep stable. Lasos GmbH was very kind to provide me with their engineers support to confirm 142laser's diagnosis ;-) unfortunately the standard power supply for this laser cannot have a variab...
- Tue Mar 12, 2019 1:52 am
- Forum: Beginning Holography
- Topic: Drying silver halides emulsion with alcool ?
- Replies: 7
- Views: 7289
Re: Drying silver halides emulsion with alcool ?
Thank you folk so much for your links and explanations :-) I reduced concentration of the flo in my a rincing bath in which (and in all baths) I now agitate my plate emulsion facing down to prevent splinters or particles deposit and had vertical drying ( without hair blower ) and my problem seems so...
- Fri Mar 08, 2019 2:50 pm
- Forum: Events, announcements, and news
- Topic: Holography Consultation/Installation Job Offer
- Replies: 1
- Views: 19736
Re: Holography Consultation/Installation Job Offer
I assume since december you were told or discovered that the technology you’re referring to is not holography ?
You are looking for a video projector on a transparent screen / sheet of plastic. Reflectogram somehow
You are looking for a video projector on a transparent screen / sheet of plastic. Reflectogram somehow
- Fri Mar 08, 2019 2:36 pm
- Forum: Beginning Holography
- Topic: Drying silver halides emulsion with alcool ?
- Replies: 7
- Views: 7289
Drying silver halides emulsion with alcool ?
Hello everyone !
I’m having difficulties in achieving a uniform drying of my silver halides emulsions ( using kodak flo) i somehow still get some stains/color-shifted zones.
I was considering drying in alcool baths, like for DCG... Anyone tried already ?
I’m having difficulties in achieving a uniform drying of my silver halides emulsions ( using kodak flo) i somehow still get some stains/color-shifted zones.
I was considering drying in alcool baths, like for DCG... Anyone tried already ?
- Mon Dec 17, 2018 3:09 am
- Forum: Beginning Holography
- Topic: Buzzing HeNe laser
- Replies: 7
- Views: 13514
Re: Buzzing HeNe laser
Just to close this subject, the problem was the laser required a bit more than its regular 11mA current to keep stable. Lasos GmbH was very kind to provide me with their engineers support to confirm 142laser's diagnosis ;-) unfortunately the standard power supply for this laser cannot have a variabl...
- Tue Nov 13, 2018 5:17 pm
- Forum: Optics
- Topic: So... diode or hene lasers for holography ?
- Replies: 2
- Views: 11551
So... diode or hene lasers for holography ?
As any young holographer I struggle to get my hands on a decent set of laser tubes/heads/power supplies.. It all cost a lot, is heavy and takes a lot of space. How is the diode stuff going on ? Any chance that diode lasers would finally match performances of hene in terms of stability, cohérence len...
- Tue Nov 13, 2018 9:56 am
- Forum: Beginning Holography
- Topic: Buzzing HeNe laser
- Replies: 7
- Views: 13514
Buzzing HeNe laser
I started up a laser with a fresh new power supply (genuine from manufacturer), and when starting up the laser would emit some light, but buzzing at the same time, like a neon tube which would not fully switch on, it sounds like it "trying". Is it safe to let the tube "warm up" i...
- Wed Oct 17, 2018 11:59 am
- Forum: Beginning Holography
- Topic: Drying marks
- Replies: 1
- Views: 5247
Drying marks
Hello ! I have like an increasing problem of drying marks on my recent holograms, it seems correlated to the amount of flo I'm using in the flo bath, but if I don't add any flo I have marks aswell. Could it be related to "maybe" old chemistry ? I see my developer bath has grown some little...
- Sun Oct 14, 2018 10:40 am
- Forum: General Holography
- Topic: Laser pico projector for making color holograms
- Replies: 49
- Views: 181298
Re: Laser pico projector for making color holograms
Do you have to maintain 0-vibration during the whole process or does it tolerate a bit of a movement ?