Search found 401 matches

by viktor j nilsson
Fri Dec 02, 2022 2:30 pm
Forum: Equipment Discussions
Topic: Dodging the infinity hump
Replies: 39
Views: 2981

Re: Dodging the infinity hump

1.4 should be too much. I think the practical limit for darkfield with the Heine is quite a bit lower than that. 1.15 maybe? But I'd be interested to hear people's opinions about optimizing the Heine for high-NA df. I have 3D printed an adapter for the Heine to use it on my Vanox AH. It works very w...
by viktor j nilsson
Mon Nov 28, 2022 8:01 am
Forum: Equipment Discussions
Topic: nikon BD vs M objectives
Replies: 60
Views: 1822

Re: nikon BD vs M objectives

https://www.ebay.co.uk/itm/185198149499

Pretty decent images here.
by viktor j nilsson
Mon Nov 28, 2022 7:29 am
Forum: Equipment Discussions
Topic: nikon BD vs M objectives
Replies: 60
Views: 1822

Re: nikon BD vs M objectives

phansen39 wrote:
Mon Nov 28, 2022 7:21 am
Have a pic on what they look like?
Well, I have one image of them disassembled:
https://www.microbehunter.com/microscop ... 63#p111763
by viktor j nilsson
Sun Nov 27, 2022 11:27 pm
Forum: Equipment Discussions
Topic: nikon BD vs M objectives
Replies: 60
Views: 1822

Re: nikon BD vs M objectives

Those prices are way out of budget. lol. I will keep looking. Got an offer for an 4 part M turrent with 2 prisms for 300 us. It has the 5 and 20 prisms. Dont know what prisms go in for a 10 and maybe 40 or 60x objective. I have 40x bd and would like to try 60x Also have a 40x m plan. 2.5 x m plan. ...
by viktor j nilsson
Sun Nov 27, 2022 5:33 am
Forum: Photography Through the Microscope
Topic: Rhabdonema adriaticum
Replies: 6
Views: 337

Re: Rhabdonema adriaticum

Exquisite! =D>
by viktor j nilsson
Sat Nov 26, 2022 11:09 am
Forum: Equipment Discussions
Topic: nikon BD vs M objectives
Replies: 60
Views: 1822

Re: nikon BD vs M objectives

Scarodactyl wrote:
Sat Nov 26, 2022 10:32 am
viktor j nilsson wrote:
Sat Nov 26, 2022 10:21 am
But that nosepiece is RMS
The one pictured has m26 threads for bd plans. They also made a 4 position bd plan one with better mechanics and iirc there was one other m26 variant but I am not certain, it's been a while.
Oh cool, I've only held the RMS versions in my hands. Sorry to confuse!
by viktor j nilsson
Sat Nov 26, 2022 10:21 am
Forum: Equipment Discussions
Topic: nikon BD vs M objectives
Replies: 60
Views: 1822

Re: nikon BD vs M objectives

But that nosepiece is RMS, so the BD objectives won't fit with their larger diameter thread, and an adapter would add some length and push the objective back focal plane away from the inference fringe, which can be highly detrimental. So I'd stay with M Plans, but you likely won't need the 'DIC' mar...
by viktor j nilsson
Sat Nov 12, 2022 1:16 am
Forum: Equipment Discussions
Topic: Closeuphotography.com Lens Test Schedule Update incl. Printing Nikkor Test
Replies: 40
Views: 1759

Re: Closeuphotography.com Lens Test Schedule Update incl. Printing Nikkor Test

Screenshot_20221112-090949_2.jpg
f1.7 at 340mm, and f5.0 at 1000mm. Still extremely impressive, and I'm sure extremely expensive.

Is there a different one for full frame ? Didn't find that in a quick search.
by viktor j nilsson
Sat Oct 01, 2022 9:31 am
Forum: Equipment Discussions
Topic: Watch out: Olympus objectives with confusing names
Replies: 12
Views: 892

Re: Watch out: Olympus objectives with confusing names

Could still be useful to you when photographing inclusions, I reckon?
by viktor j nilsson
Wed Aug 10, 2022 1:28 pm
Forum: Photography Through the Microscope
Topic: A Choanoflagellate and Lacrymaria
Replies: 21
Views: 2019

Re: A Choanoflagellate and Lacrymaria

David, Really nice setup, many thanks for sharing. Interesting to see how Nikon has implemented the fly's eye lens - quite different from what I'm used to. Clearly works well! And I can see that it actually makes this type of dual illumination setup easier: as long as most of the light hits the fly'...
by viktor j nilsson
Sat Aug 06, 2022 1:04 am
Forum: Photography Through the Microscope
Topic: A Choanoflagellate and Lacrymaria
Replies: 21
Views: 2019

Re: A Choanoflagellate and Lacrymaria

Awesome images.
Have you shown your beamsplitter setup somewhere? I'd be interested to see it. That Profoto D2 looks like a beast for this purpose, but I'm struggling to see how you'd adapt it.
by viktor j nilsson
Mon Jul 18, 2022 11:41 am
Forum: General Discussion Forum and Community Announcements
Topic: Amazing James Webb Space Telescope
Replies: 37
Views: 3819

Re: Amazing James Webb Space Telescope

If you've missed it, here's a site that lets you compare images from the Webb telescope to images of the same objects taken with Hubble:

https://www.webbcompare.com/

Spoiler: it's amazing. Makes Hubble look like a dropped Mitutoyo.
by viktor j nilsson
Fri Jul 15, 2022 10:40 am
Forum: Photography Through the Microscope
Topic: Euglena sanguinea from a pond [not Haematococcus!]
Replies: 8
Views: 1079

Re: Haematococcus from a pond

This is not Haematococcus, it is Euglena sanguinea. You know, I am actually starting to think that all of them are Euglena sanguinea. Do you agree? I found this image which really resembles the spherical stage with red center and green periphery: https://d9-wret.s3.us-west-2.amazonaws.com/assets/pa...
by viktor j nilsson
Sun Jul 10, 2022 10:55 pm
Forum: Photography Through the Microscope
Topic: Euglena sanguinea from a pond [not Haematococcus!]
Replies: 8
Views: 1079

Re: Haematococcus from a pond

Thanks Scarodactyl and PeteM!
by viktor j nilsson
Sun Jul 10, 2022 10:54 pm
Forum: Photography Through the Microscope
Topic: Euglena sanguinea from a pond [not Haematococcus!]
Replies: 8
Views: 1079

Re: Haematococcus from a pond

Bernd wrote:
Sun Jul 10, 2022 1:59 pm
This is not Haematococcus, it is Euglena sanguinea.
Yes, I eventually identified the slowly moving red blob in images 1, 5 and 6 as Euglena sanguinea. But the red-green algae it's moving around among is surely Haematococcus.