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Hi, because of some personal trouble it is a few weeks ago that I could post something here. But now something ... I found on ebay classifieds for 5 euros a xenon plasma tube, which can be used very well for calibration. A He-NE tube and other emission lamps also light up when approaching...

very cool, thanks for the pics and description

Very interesting, this motivates me to unpack my spectra physics 161 again ..... thanks !

Re: Pics from 6-30-18 Wow , i love such pictures , great , please some more!

I want to quote to an other treat "Spectrometer Calibration" I have now found out why I was so distressed with one of the spectrometers during calibration. With this device too, the focus mirror has a hairline tear that is invisible to the naked eye. Of course, this crack deformed the image...

Hi, i read something .... maybe interesting here ... "Figure 2 shows the excitation and emission PL spectra of 1 mol% Dy 3+ doped SrB 2 Si 2 O 8 phosphor sample. Four emission narrow band from trivalent dysprosium were observed in the PL emission at ~482, 575, 661 and 754 nm which corresponded...

Hi, you can use this software : Link: http://www.science-surplus.com/products/spectrometers/spectrometer-resources/SpectrumStudioSetup.zip?attredirects=0&d=1

Hi Paul, sorry ... i don't know , it is from a flea market. Maybe someone built it to look like old i guess.

Hello, as I had already mentioned in various occasions, I love old nostalgic things. Therefore, here is a slightly smaller old treasure from my collection. Certainly not necessarily suitable for astronomical purposes ... but fine to look at.

Very interesting !!!

Hello, the absolutely great pictures here have motivated me to rummage my old baby out of the garage. By far I can not keep up here, it is only a 4.5 inch telescope with f = 900 mm. The part is still from old days, when I was in the 70s still in the star time. At that time, I already equipped...

Hello, no, we certainly did not argue here in the negative sense. A little bit of discussion is helpful as always to encourage progress. All is well ...... Now to the next topic ...: I have tried to analyze the structures of the grating, which is quite difficult due to the fine structures. Here...

Yes Paul, it is as you said, the b&w-TEK device is not as up to date .... me too ... :beer:

No doubt, the ocean optics and the software is far better than this antique device from B & W-TEK. I did not want to defend the spectrometer of B & W-TEK, but this treat is primarily about this device, uses and modifications of this part. Of course, you can buy with money ready and finished...

Hi kecked, this is not an order-filter .... it is a logpass-filter to kick of the rest of the original laser. I want to play a little with this device , that is it what i want .. . To get this old nostalgic device to live again. Yes , other devices are better for usage, but this is not my...

Hello, I would like to make some mechanical changes to the spectrometer and have completely disassembled the aluminum housing into all items. Here I found in slit various bluish baubles, which probably come from the filter. The coating separates from the filter and is distracting on the slit...

Congratulation ! 10 M Rep-power !!!!!

Thanks a lot Paul !

Yes Paul, so it is . Rotating all you can is not a solution.

This range can be more or less normal for this grating, if you want to go more into the red without changing the grating or without moving optical parts, you have to look at the label of the device for one with lower numbers "left pixel, right pixel". This device is than a little bit shifted to...