Search found 121 matches
- Wed May 03, 2023 11:20 am
- Forum: OpenRAMAN
- Topic: Calibration
- Replies: 23
- Views: 15931
Re: Calibration
Could you try with acetone instead ? If you used denaturated ethanol (the blue stuff) you may get plenty of fluorescence signal from the additives.
- Wed May 03, 2023 11:18 am
- Forum: OpenRAMAN
- Topic: Materialise 3-D Printed Parts
- Replies: 13
- Views: 7399
Re: Materialise 3-D Printed Parts
One user did succeed with FDM but personally I recommend SLS for structural parts, or even better CNC machining in Al 6061 or equivalent if you can afford it.
- Mon May 01, 2023 2:21 pm
- Forum: OpenRAMAN
- Topic: Beginner’s assembly tricks : Solid add-on + GalaxyView + Neon calibration
- Replies: 4
- Views: 3241
Re: Beginner’s assembly tricks : Solid add-on + GalaxyView + Neon calibration
Thank you very much for your detailed feedback Karel! I liked the idea of using the solid cuvette to re-image the light on the slit; that's less tooling required :) I think you also mentioned me that your Daheng camera is limited in 1 sec exposure time. It's the same with mine (different sensor, it'...
- Wed Apr 26, 2023 5:36 pm
- Forum: OpenRAMAN
- Topic: Materialise 3-D Printed Parts
- Replies: 13
- Views: 7399
Re: Materialise 3-D Printed Parts
They seem to have drastically increased their price... you may want to check the price of CNC machining in POM/acetal/delrin at that level. Photoresin has much higher resolution than SLS which is required for that part. You can try in SLS but I don't think you'll get a clean groove for the o-ring. I...
- Tue Apr 25, 2023 12:23 pm
- Forum: OpenRAMAN
- Topic: Materialise 3-D Printed Parts
- Replies: 13
- Views: 7399
Re: Materialise 3-D Printed Parts
You can ask for the support marks to be removed
stereolitography is a bit like filament in that regards, you need posts/support for the print and they need to be removed after
stereolitography is a bit like filament in that regards, you need posts/support for the print and they need to be removed after
- Sat Apr 22, 2023 8:13 am
- Forum: OpenRAMAN
- Topic: Materialise 3-D Printed Parts
- Replies: 13
- Views: 7399
Re: Materialise 3-D Printed Parts
The LD clamp should be stereolitography :) It's a process where you can get much thinner details and the parts look a lot like molded injection parts. The only downside is that they are very brittle (just like glass) so never try to rework them with anything else than sandpaper. For the LD clamp it ...
- Wed Apr 19, 2023 5:58 pm
- Forum: OpenRAMAN
- Topic: Materialise 3-D Printed Parts
- Replies: 13
- Views: 7399
Re: Materialise 3-D Printed Parts
I confirm.
PS: did I write FMJ in the BOM or MJF? FMJ would be Full Metal Jacket, a typo
PS: did I write FMJ in the BOM or MJF? FMJ would be Full Metal Jacket, a typo
- Sun Apr 16, 2023 5:10 pm
- Forum: OpenRAMAN
- Topic: Spectral resolution of spectromter?
- Replies: 4
- Views: 3102
Re: Spectral resolution of spectromter?
The total range on openraman is about 110nm (550 nm to 660nm approximately) : 1/550 - 1/532 = 600 cm-1 1/660 - 1/532 = 3650 cm-1 With a slit size of 20 um and a compression factor of cos45°/cos0° (grating configuration) the image on the camera is at best 14 um. In practice, it's a bit bigger due to ...
- Fri Apr 14, 2023 8:04 am
- Forum: OpenRAMAN
- Topic: Spectral resolution of spectromter?
- Replies: 4
- Views: 3102
Re: Spectral resolution of spectromter?
There are detailed posts on thepulsar.be about resolution but information is a bit spread among the various posts. In summary: resolution is defined as the ability to discriminate two nearby peaks provided the peaks broadness are not the limiting factor a good estimate of resolution is given by the ...
- Fri Apr 14, 2023 5:38 am
- Forum: OpenRAMAN
- Topic: Spectrum Analyzer Software
- Replies: 2
- Views: 2113
Re: Spectrum Analyzer Software
I just updated the links, it should be working now. The problem occurs with "http" links because some web browser like Chrome don't allow downloading from non https links. When I moved the website from http to https, I had to correct all the links and I missed some. If you find other broke...