Search found 1399 matches

by Planapo
Thu Feb 22, 2024 11:04 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: P. ulysses with the "weird Nikon"
Replies: 15
Views: 5749

Re: P. ulysses with the "weird Nikon"

but the same seller offers the "normal" version for 50-60$ more and accepts offers :wink:
Thanks! Understood! :D

--Betty
by Planapo
Wed Feb 21, 2024 4:26 pm
Forum: Photography Through the Microscope
Topic: Soy Sauce landscape
Replies: 5
Views: 338

Re: Soy Sauce landscape

This looks beautiful!

--Betty
by Planapo
Wed Feb 21, 2024 4:17 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: Debunking the high NA / coverslip correction myth
Replies: 73
Views: 31824

Re: Debunking the high NA / coverslip correction myth

Maybe you are aware of it anyway, but just in case to help with your trials: For such high NA objectives, as cover slip/cover glass thickness is critical for best performance, I recall that in the lab there were coverslips with narrower tolerances than the standard ones around. I just had a look at ...
by Planapo
Wed Feb 21, 2024 3:41 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: P. ulysses with the "weird Nikon"
Replies: 15
Views: 5749

Re: P. ulysses with the "weird Nikon"

Yeah, when it comes to sourcing used tech equipment, the grass for our US American friends on the other side of the pond is so much greener than over here. :) :wink: Thanks for sharing your thoughts, guys. With your refocussing method findings you have blazed a new trail, Hristo! And thanks for the ...
by Planapo
Tue Feb 20, 2024 5:03 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: P. ulysses with the "weird Nikon"
Replies: 15
Views: 5749

Re: P. ulysses with the "weird Nikon"

Thanks for the clarification, Hristo! Have you ever used such an "unbranded" 1501-9398 20x Nikon with good results? Or if not, do you expect they could give good results by your refocussing method? I ask since they are cheaper than the branded ones... after all we disadvantaged Europeans have to pay...
by Planapo
Tue Feb 20, 2024 4:23 pm
Forum: Equipment Discussions
Topic: short locking tweezers or other small holders / manipulators? Alligator too harsh, fragile subjects for pins
Replies: 7
Views: 432

Re: short locking tweezers or other small holders / manipulators? Alligator too harsh, fragile subjects for pins

For fragile, delicate objects often so called featherweight forceps are used. They are made of very flexible stainless steel, so the force of the grip is just given by the spring force of the flexible steel which avoids damaging or crushing the fragile objects. I haven't seen locking featherweight f...
by Planapo
Tue Feb 20, 2024 4:09 pm
Forum: Equipment Discussions
Topic: Specimen holding, this surplus goniometer or an aliexpress xyz linear stage?
Replies: 10
Views: 714

Re: Specimen holding, this surplus goniometer or an aliexpress xyz linear stage?

What are you using for the vertical linear motion surface for Z(on the back side of this) ? Sandwiched between the two angle brackets is a Newport M-426 linear stage. Also, I've got rough mental plans to motorize my goniometer so I can move the subject itself via Wi-Fi and a pi pico w. Yeah, I have...
by Planapo
Tue Feb 20, 2024 12:33 pm
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: P. ulysses with the "weird Nikon"
Replies: 15
Views: 5749

Re: P. ulysses with the "weird Nikon"

Awesome details and very nice lighting!

Was "the weird Nikon" used here one of those Nikons from a gene sequencer, designed to be used with the thicker glass of a flow cell, just labelled with a number like 1501-9398?

--Betty
by Planapo
Tue Feb 20, 2024 11:16 am
Forum: Photography Through the Microscope
Topic: Insect fece
Replies: 3
Views: 325

Re: Insect fece

"Hmmmm" indeed, .... for a faecal pellet this object seems to have a lot of structures. From where it was found and from its looks, I am with Scarodactyl, that it reminds of a tapeworm proglottis. Half the size of a sesame seed woud be rather small, and despite your photo through the microscope, one...
by Planapo
Tue Feb 20, 2024 10:47 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: kitchen ant
Replies: 28
Views: 1563

Re: kitchen ant

I very much enjoy your new stereo pair that shows the mouthparts from below. So many details, lovely! I am surprised to hear about the "endangered" status. Are your Tapinoma species not fond of living in kitchens like ours? As to the "endagered" status: With Germany being a rather densely populated ...
by Planapo
Sun Feb 11, 2024 4:55 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: kitchen ant
Replies: 28
Views: 1563

Re: kitchen ant

More outstanding photographs! The stereos of the mouthparts are a treat and really rock! And you have even managed to capture the "eyelet" in a living specimen! I wonder why the picture of the petiolus in my key doesn't show it, and neither is it mentioned in the text. Now I have to look at a Tapino...
by Planapo
Sun Feb 11, 2024 4:09 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: How to make micro light inexpensively
Replies: 1
Views: 544

Re: How to make micro light inexpensively

Good and useful hack!
It's small and portable, so I can imagine it could be useful especially for field work.
Thanks for sharing!

--Betty
by Planapo
Sun Feb 11, 2024 3:57 am
Forum: Technical and Studio Photography -- Macro and Close-up
Topic: 2 types of nival (appearing at the border of snow cover) myxomycetes
Replies: 4
Views: 330

Re: 2 types of nival (appearing at the border of snow cover) myxomycetes

Very nice!
It seems this objective works very well with the Canon zoom as tube lens surrogate.

And thanks for the information on the photographed subject and where it comes from. I always appreciate that.

--Betty
by Planapo
Sat Feb 10, 2024 12:24 pm
Forum: Equipment Discussions
Topic: Specimen holding, this surplus goniometer or an aliexpress xyz linear stage?
Replies: 10
Views: 714

Re: Specimen holding, this surplus goniometer or an aliexpress xyz linear stage?

Attached is a picture how I've added Z and Rz to my diffractometer head with spare parts I had on the shelf for some time. The linear stage, here sandwiched vertically between two angle brackets, would also allow for manual stacking, if this specimen holder/stage was used in a vertical setup below t...
by Planapo
Wed Feb 07, 2024 11:35 am
Forum: Equipment Discussions
Topic: Specimen holding, this surplus goniometer or an aliexpress xyz linear stage?
Replies: 10
Views: 714

Re: Specimen holding, this surplus goniometer or an aliexpress xyz linear stage?

I'm sorry if this has been brought up before a bunch, but please direct me to any keywords I should search for for a rundown on how people deal with specimen holding. I saw this goniometer for a really cheap price online and it seemed appealing, but I was also considering the ~$75 xyz stages I see ...