I'm looking to buy a Zeiss k10 UV photoeypiece (projectiv) if anyone has one they're open to selling please.

Picture below from the only image I've been able to find of one online.

Nicely done Lou. I enjoy going round the garden with a UV torch (I have a 15W 365nm one) at night and taking photos. This was the cut end of some Acaccia logs, taken using a Schott KV-418 filter on the lens (to ensure no UV gets through, as my Canon's internal filters do not block all the 365nm ligh...

A bit of an update. I've been gradually pulling together parts for this build and now have what I need to complete it, so hope to have it up and running sometime early 2021. Will be able to image down to about 300nm with the camera and light source I have, however with an alternative camera and ligh...

In case you are interested in a crazy 10x 0.37 UV (365nm) "objective" with a gigantic field size and perfect field flatness, this just came up on eBay today: https://www.ebay.com/itm/193756315611?ul_noapp=true This is quite unique. If nothing else, it is full of UV-transmitting lenses made from exo...

My UV microscope build is coming along. The latest post summarises the work to date and brings together links to the different parts to it. Also I've swapped out some of the original Olympus optical components for UV fused silica now, and I share the initial testing of that. Here's the link - https:...

Little bit of an update on this one. As shown above both the prism and the glass window block the short wavelength UV, which means that they will be no good when I am doing UVB imaging. I've taken the plunge and ordered a replacement circular window in UV fused silica. This leaves the issue of the p...

A Gorgonian sea fan spicule (a prepared Diatoms Labs slide) taken in darkfield. Olympus BHB, 40x A40PL 0.65 lens, darkfield/phase contrast condenser, 2.5x NFK photoeyepiece, 10 images stacked in Zerene. Overall image size reduced for sharing.

Nice review Enrico, thanks for sharing.

Thanks Lou. It's proving to be a lot more involved than I (naively) thought. However I'm gradually working through it.

I'm gradually building a UV microscope for transmission imaging down into the UVB by converting an Olympus BHB. This means swapping out all the original optics for fused silica or similar as glass strongly absorbs the UVB. The condenser has proved a bit of a sticky thing to deal with. I have a Zeiss...

Viktor, my apologies, I just realised I never responded to this. Yes with 2 layers you should be fine - you'll be down at around 1% transmission. But I'd still recommend wearing UV safety glasses whenever using the light.

Here's the UV shield I have. Looking at pictures on line I think it's from a Zeiss Axioskop 2 fluorescence microscope - it came with a Zeiss mercury xenon lamp I got. The filter is 3mm thick and plastic. 20201002_151311 small 3mm thick.jpg Some transmission measurements, taken with an Ocean Optics F...

Would be interesting to see transmission data for commercial UV protection screens, but I haven't found any. I have an orange protection screen, which I believe is a Zeiss one. I'll run it through my spectrometer and see what it looks like. That'd be great! No problem. I've found it. When I've done...

viktor j nilsson wrote: ↑

Fri Oct 02, 2020 2:51 am

Would be interesting to see transmission data for commercial UV protection screens, but I haven't found any.

I have an orange protection screen, which I believe is a Zeiss one. I'll run it through my spectrometer and see what it looks like.

Scarodactyl wrote: ↑

Thu Sep 24, 2020 11:47 am

jmc wrote: ↑

Thu Sep 24, 2020 8:43 am

Scarodactyl - excuse my ignorance, but what's a 'maler' please?

Phone typo for 'maker'.

Ok, cheers.