Search found 501 matches

by Scarodactyl
Tue Jan 21, 2020 9:17 pm
Forum: Microscopes and optics
Topic: petrographic microscope technique question for calcite DIC raw materials
Replies: 8
Views: 73

Re: petrographic microscope technique question for calcite DIC raw materials

A polariscope should do it (ie crossed linear polarizers with a light below them). Calcite is uniaxial so it's not too insane to deal with. Thr optical axis will be the orientation where the crystal remains mostly dark as yoh rotate it between the two polarizing filters. Twinning is common at least ...
by Scarodactyl
Tue Jan 21, 2020 6:55 pm
Forum: Illumination Techniques
Topic: Making DIC Prisms
Replies: 7
Views: 162

Re: Making DIC Prisms

This is a very interesting project! I will look forward to future updates.
by Scarodactyl
Sat Jan 18, 2020 8:06 pm
Forum: Microscopes and optics
Topic: 20x nikon plan apo infinite objectives on eBay for 100bux
Replies: 1
Views: 72

20x nikon plan apo infinite objectives on eBay for 100bux

Just in case someone with a Nikon infinite system (or one suitably compatible) hadn't seem, there are some amazing Nikon 20x/0.75 planapo objectives for sale on eBay for 100 bucks plus 10 shipping. These apparently come from an obsolete gene sequencer--some other gene sequencer objectives are simila...
by Scarodactyl
Sat Jan 18, 2020 7:45 am
Forum: Microscopy accessories
Topic: Petroscope
Replies: 7
Views: 133

Re: Petroscope

It is hard to find used geological scopes. Geologists just love their scopes and hold onto them tightly--part of that is that the standard loadout is still standard decades later even for research, not constantly evolving with new vital features like fluorescence and confocal stuff. Petrographic sco...
by Scarodactyl
Fri Jan 17, 2020 3:06 am
Forum: Camera systems and imaging
Topic: DSLR or Integrated?
Replies: 11
Views: 269

Re: DSLR or Integrated?

Mirrorless is great, but just triple check that they have all the features you need. Some of the Canon ones won't connect with their EOS utility, for instance, which is problematic.
by Scarodactyl
Tue Jan 14, 2020 11:34 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 285

Re: Advice on upgrading a stereo microscope

A bit odd that they call it a factory outlet (since their lineup really looks the same as any seller of chinese microscopes, though I guess they don't really say where the factory is?). I'm also not sure I'd trust the before price (given eg Amscope's shenanigans on that front), but that all said tha...
by Scarodactyl
Tue Jan 14, 2020 8:36 am
Forum: My microscope
Topic: Reichert Polyvar Microscope
Replies: 22
Views: 362

Re: Reichert Polyvar Microscope

Realigning the prism after removing and repairing it could be something of a challenge as well.
by Scarodactyl
Mon Jan 13, 2020 10:45 pm
Forum: Microscopes and optics
Topic: Nikon Microphot-FXL
Replies: 7
Views: 156

Re: Nikon Microphot-FXL

The microphot line launched 35 years ago. That's a fairly long time I'd say. There's no guarantee that they made many of the "FXL" variant in the first place. It's described as "a research microscope that featured a large stage that could accommodate semiconductor microchips". The microphot line lau...
by Scarodactyl
Mon Jan 13, 2020 10:29 pm
Forum: Beginner's corner
Topic: Advice on upgrading a stereo microscope
Replies: 15
Views: 285

Re: Advice on upgrading a stereo microscope

Because the OP's microscope has a very similar looking twin, rated for 50X, a twin that accepts both 10X and 25X eyepieces, I suspect the two share the same objectives, Definitely the same scope just with an extra pair of eyepieces included. and that his microscope's objectives have the resolution....
by Scarodactyl
Mon Jan 13, 2020 7:47 pm
Forum: My microscope
Topic: Reichert Polyvar Microscope
Replies: 22
Views: 362

Re: Reichert Polyvar Microscope

Yeah, that's got to be a delam. That's a real bummer.
by Scarodactyl
Mon Jan 13, 2020 6:23 pm
Forum: Camera systems and imaging
Topic: DSLR or Integrated?
Replies: 11
Views: 269

Re: DSLR or Integrated?

An integrated camera is planned obsolescence. Hooking up a dslr is at most a pain once. After that you can swap in another camera as easily as changing a lens.
by Scarodactyl
Mon Jan 13, 2020 5:58 am
Forum: Microscopes and optics
Topic: Nikon Microphot-FXL
Replies: 7
Views: 156

Re: Nikon Microphot-FXL

The -phot series are all finite microscopes based on their cf series of objectives (with the exception of a couple late optiphot models for wafer inspection that were infinity corrected). Eclipse is the later branding for infinity corrected scopes using their cfi series of objectives. The microphots...
by Scarodactyl
Mon Jan 13, 2020 3:13 am
Forum: Microscopes and optics
Topic: Nikon Microphot-FXL
Replies: 7
Views: 156

Re: Nikon Microphot-FXL

Just from the snippet in the memoir I'd guess it just has a stage with a larger range of movement for wafer inspection (similar to the various optiphot varieties designated by the size of chip they could examine).
by Scarodactyl
Sun Jan 12, 2020 9:35 pm
Forum: Microscopy accessories
Topic: 10x eyepiece for 23.2mm tube that fits this 33mm smartphone holder?
Replies: 9
Views: 140

Re: 10x eyepiece for 23.2mm tube that fits this 33mm smartphone holder?

I have one with a screw-driven clamp for the eyepiece that works fine.
by Scarodactyl
Sun Jan 12, 2020 9:24 pm
Forum: Camera systems and imaging
Topic: Best option for attaching DSLR to Leica DMR trinocular port (HC)?
Replies: 6
Views: 148

Re: Best option for attaching DSLR to Leica DMR trinocular port (HC)?

Fortunately it is very easy to use your own 200mm tube lens and direct project onto aps-c. I should make a new thread for that though.
by Scarodactyl
Sun Jan 12, 2020 8:03 am
Forum: Microscopy accessories
Topic: 10x eyepiece for 23.2mm tube that fits this 33mm smartphone holder?
Replies: 9
Views: 140

Re: 10x eyepiece for 23.2mm tube that fits this 33mm smartphone holder?

I think that your olympus 10x there is compensating. One reason they might supply the adapter with a 20x eyepiece is to crop out the outside of the field of view where eyepiece corrections are more important to improve chromatic aberrations and field flatness. If you do use a generic non-compensatin...
by Scarodactyl
Sun Jan 12, 2020 7:59 am
Forum: Camera systems and imaging
Topic: Best option for attaching DSLR to Leica DMR trinocular port (HC)?
Replies: 6
Views: 148

Re: Best option for attaching DSLR to Leica DMR trinocular port (HC)?

Just as a followup, I got a Leica M-series trinocular head in today, and it has an interesting configuration--the tube lenses have been moved up into the bottom of the eyepiece tubes (allowing/forcing the tubes to be longer than a normal binocular head), which means the trinocular port produces an i...
by Scarodactyl
Sat Jan 11, 2020 10:24 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

That works perfectly for canon, not so for nikon, due to flange distance.
by Scarodactyl
Sat Jan 11, 2020 8:45 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

Oh yeah, that could work but it's likely not going to give amazing results. Just the difference in height to make a 2.5x nfk project an image circle like a 1.6x produces a very noticeable degradation in image quality. Better to use the correct photo eyepiece when possible.
by Scarodactyl
Sat Jan 11, 2020 8:44 pm
Forum: My microscope
Topic: Reichert Polyvar Microscope
Replies: 22
Views: 362

Re: Reichert Polyvar Microscope

slight differences in color between eyepieces have been reported and aren't too abnormal.
This, though, looks pretty extreme. try removing the head, removing the eyepiece and shining a light through the bottom so you can examine the prisms to see if there's anything on them.
by Scarodactyl
Sat Jan 11, 2020 7:17 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

That one looked kind of short to me. I could be wrong though.
by Scarodactyl
Sat Jan 11, 2020 4:53 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

Probably easier to just get a third party adapter and not worry about it https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F193287613355 The photomicro Ls are pretty expensive for what they are imo. It is just an empty metal tube with set screws on one end and a camera ...
by Scarodactyl
Sat Jan 11, 2020 12:42 am
Forum: Collecting microscopes and slides
Topic: B&L 1339cf compound head to fit sz mount?
Replies: 2
Views: 53

Re: B&L 1339cf compound head to fit sz mount?

I'm really trying not to buy more scopes until I sell some. It's getting to be a problem, space and clutterwise.
by Scarodactyl
Sat Jan 11, 2020 12:37 am
Forum: Camera systems and imaging
Topic: Best option for attaching DSLR to Leica DMR trinocular port (HC)?
Replies: 6
Views: 148

Re: Best option for attaching DSLR to Leica DMR trinocular port (HC)?

Leica's corrections varied through time on compounds (unlike their m-series stereo systems whose backwards compatibility is still absolutely astonishing.) A nikon 2.5x may work, and would hold its value pretty well for resale if not. I'm actually not sure about the 2.5x in the first post, is that re...
by Scarodactyl
Fri Jan 10, 2020 11:58 pm
Forum: Collecting microscopes and slides
Topic: B&L 1339cf compound head to fit sz mount?
Replies: 2
Views: 53

B&L 1339cf compound head to fit sz mount?

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F222536831577 Has anyone ever heard of this before? I can't seem to find any information with a quick google. It might be an i teresting tool to swap onto a gemological scope for higher resolution imaging from time to ti...
by Scarodactyl
Fri Jan 10, 2020 9:35 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

That is the correct adapter, but it probably won't be 100% parfocal with the eyepieces when adapted to your camera (comes with an olympus OM.mount). It will be quite close though. The nfk 2.5x works with it. If you wamt to get creative though you can make your own http://www.microbehunter.com/micros...
by Scarodactyl
Fri Jan 10, 2020 8:31 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

1) why so small? My cameras senser is bigger.... As we've said it's because this is an adapter for small sensor cameras, not for slrs. It is the wrong part. The part you want is a photomicro adapter L, or you can get a third party adapter, or you can make one yourself. This configuration with the m...
by Scarodactyl
Thu Jan 09, 2020 8:27 pm
Forum: Camera systems and imaging
Topic: BH2 BHS MTV
Replies: 36
Views: 483

Re: BH2 BHS MTV

The mtv adapter has reducing optics built in. It is meant for small sensor cameras. All you need is empty space between your 2.5x nfk and your camera sensor.
by Scarodactyl
Thu Jan 09, 2020 8:23 pm
Forum: Camera systems and imaging
Topic: Best option for attaching DSLR to Leica DMR trinocular port (HC)?
Replies: 6
Views: 148

Re: Best option for attaching DSLR to Leica DMR trinocular port (HC)?

I agree that Leica official solutions do tend to be a real pain for dalrs in my experience, and the 2.5x adapters are really quite expensive and rare. There was one on eBay semi recently for... I want to say 600 bucks or so? (Edit: I was wrong, it's the rarer 1.6x for aps c anx it's 850(!!) https://...
by Scarodactyl
Tue Jan 07, 2020 12:47 am
Forum: Introduce yourself
Topic: Hello! And if you got some advice?
Replies: 2
Views: 94

Re: Hello! And if you got some advice?

The motic isn't all that old, really. I had one of that model once, it's ok but nothing special. Motic is a Chinese brand, and in spite of improvements over the years still second fiddle at best to established brands from elsewhere. I'd definitely go with the Zeiss over it, lack of zoom and all--the...