Search found 8207 matches

by 75RR
Sat May 20, 2023 3:02 pm
Forum: My microscope
Topic: New Carl Zeiss Standard RA38.
Replies: 19
Views: 8392

Re: New Carl Zeiss Standard RA38.

Can you recommend some cleaning/ servicing supplies till it gets here ?
The Clean Microscope by Zeiss is quite usefull:

https://www.zeiss.com/content/dam/Micro ... -zeiss.pdf
by 75RR
Tue May 09, 2023 4:15 pm
Forum: My microscope
Topic: Zeiss stand- Help Identify
Replies: 14
Views: 3500

Re: Zeiss stand- Help Identify

Congratulations on the GFL

Here is a link to an article on the Optovar: https://www.microscopy-uk.org.uk/mag/in ... tovar.html

Looks like you have one with an Analyzer, that's a big plus
by 75RR
Thu Apr 13, 2023 4:24 pm
Forum: Pictures and Videos
Topic: Another type of marine diatom
Replies: 3
Views: 1198

Re: Another type of marine diatom

Nice catch! Possibly Biddulphia mobiliensis, also known as Odontella mobiliensis and Trieres mobiliensis https://www.researchgate.net/publication/284182589_Morphologic_taxonomic_and_nomenclatural_analysis_of_species_of_Odontella_Trieres_and_Zygoceros_Triceratiaceae_Bacillariophyta_from_Anegada_Bay_P...
by 75RR
Mon Feb 27, 2023 9:37 am
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 143
Views: 124407

Re: My Zeiss Microscopes

Great project! Thanks for the detailed description
by 75RR
Sat Feb 11, 2023 8:18 pm
Forum: Beginner's corner
Topic: Moving equipment from USA to UK and making it work!
Replies: 4
Views: 2680

Re: Moving equipment from USA to UK and making it work!

You have about an hour to decide on this one!
Not sure what the reserve is but will probably suit your needs.

285134378100 on ebay uk
by 75RR
Tue Jan 31, 2023 6:30 am
Forum: Pictures and Videos
Topic: Planktonic gastropods in DF
Replies: 23
Views: 5031

Re: Planktonic gastropods in DF

Nicely done!
by 75RR
Fri Dec 02, 2022 6:28 pm
Forum: Resources (online, books etc.)
Topic: Abbe "The Relation of Aperture and Power in the Microscope"
Replies: 3
Views: 2802

Re: Abbe "The Relation of Aperture and Power in the Microscope"

As you say, from the man himself! Glad you found it interesting.
by 75RR
Fri Dec 02, 2022 4:27 pm
Forum: Microscopes and optics
Topic: how to adjust the condenser
Replies: 9
Views: 2352

Re: how to adjust the condenser

This is a link to the Abbe article on Dropbox: https://www.dropbox.com/s/bwfk3npzp94g4eu/The%20Relation%20of%20Aperture%20and%20Power%20in%20the%20Microscope%20By%20Professor%20Abbe.pdf?dl=0 Note: No need to join Dropbox to download anything, close any window asking you to sign in - and then just c...
by 75RR
Fri Dec 02, 2022 2:47 pm
Forum: Microscopes and optics
Topic: how to adjust the condenser
Replies: 9
Views: 2352

Re: how to adjust the condenser

Remove an eyepiece and peer down the empty tube … Adjust the diaphragm until it about seven-eighths fills the field of view, or until you are sure that no light is bouncing off the inner wall of the tube. Make a note of the arbitrary number that Nikon has provided, for your future convenience. Mich...
by 75RR
Fri Dec 02, 2022 2:34 pm
Forum: Resources (online, books etc.)
Topic: Abbe "The Relation of Aperture and Power in the Microscope"
Replies: 3
Views: 2802

Abbe "The Relation of Aperture and Power in the Microscope"

This is the actual article extracted from the Journal of the Royal Microscopical Society. June 1882, part 1 pages, 300 - 309 and August 1882 part 2, pages 460 - 473 https://www.dropbox.com/s/bwfk3npzp94g4eu/The%20Relation%20of%20Aperture%20and%20Power%20in%20the%20Microscope%20By%20Professor%20Abbe....
by 75RR
Sun Jan 02, 2022 8:14 pm
Forum: Digital processing
Topic: Mac mini M1
Replies: 31
Views: 20579

Re: Mac mini M1

.
What can I say, please read the small print!

Digital processing
Here you can discuss topics such as focus stacking, stitching and other techniques that relate to the processing of micrographs.

Keep it real folks - there is no computer section in MicrobeHunter
by 75RR
Thu Dec 30, 2021 7:35 pm
Forum: My microscope
Topic: Nachet NS400
Replies: 8
Views: 4435

Re: Nachet NS400

.
Here is nice 1860s example of their work

Larger image: https://www.dropbox.com/s/uvf0b7sq4favo ... s.jpg?dl=0
.
by 75RR
Wed Dec 29, 2021 7:57 pm
Forum: Beginner's corner
Topic: Microscopes and Computers
Replies: 15
Views: 4659

Re: Microscopes and Computers

This Microscopy FAQ by forum member carlh6902 should prove useful: https://drive.google.com/file/d/19GrLTD ... 9XXbC/view
by 75RR
Wed Dec 29, 2021 3:23 pm
Forum: Microscopy accessories
Topic: Advice On Buying Parts On eBay
Replies: 23
Views: 9448

Re: Advice On Buying Parts On eBay

Nothing personal against 75RR, but personally, I would be more carefully than reading only that page. If you carefully read THAT "used" definition of eBay, the last sentence is a loophole for seller. If those "imperfections" are deal breaker for you (and only "imperfections" for seller), then you s...
by 75RR
Wed Dec 29, 2021 6:34 am
Forum: Microscopy accessories
Topic: Advice On Buying Parts On eBay
Replies: 23
Views: 9448

Re: Advice On Buying Parts On eBay

. For item condition you need to go with Ebay's definition. That is the only one that counts. The weasel phrasing " untested " or " as is " is meaningless. https://www.ebay.com/help/selling/listings/creating-managing-listings/item-conditions-category?id=4765&st=3&pos=1&query=Item%20condition%20by%20...
by 75RR
Tue Dec 28, 2021 8:24 pm
Forum: Pictures and Videos
Topic: revisiting Diatomeen Ugchelen 6
Replies: 5
Views: 3092

Re: revisiting Diatomeen Ugchelen 6

. Many thanks Hobbyst46, Have gone back to the Projektiv 63mm which I am now trying to fine tune. Given that my camera, due to its excess vibration is on a tripod, and as I don't have a permanent spot for my microscope at the moment (it hot-bunks desk space with my monitor and keyboard), means that ...
by 75RR
Tue Dec 28, 2021 3:00 pm
Forum: Pictures and Videos
Topic: revisiting Diatomeen Ugchelen 6
Replies: 5
Views: 3092

Re: revisiting Diatomeen Ugchelen 6

.
Thanks tlansing and LouiseScot
Any chance of a link to larger versions?
Don't have any but made a bigger jpeg version from the original 45 image stack TIFF of the Eunotia 65µm.

Pretty close to empty magnification at this size
.
by 75RR
Mon Dec 27, 2021 2:27 pm
Forum: Pictures and Videos
Topic: revisiting Diatomeen Ugchelen 6
Replies: 5
Views: 3092

revisiting Diatomeen Ugchelen 6

. revisiting Diatomeen Ugchelen 6 https://www.microbehunter.com/microscopy-forum/viewtopic.php?f=6&t=13181&p Stauroneis angustilancea 85µm and 2 diatoms in Girdle view at 65µm and 40µm that could be Eunotia sp. Corrections as always are welcome ... Zeiss Planapo 63x/1.4, DIC, stacked in Photoshop, c...
by 75RR
Wed Dec 22, 2021 8:34 am
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

There is only one way the ring will fit with access cut outs for each post of iris position and no cut outs for the phase positions. If the cover is on and fits, it's probably on right. Thanks - yes, I'm sure its on correctly. I'll investigate further tomorrow - the silver iris ring may just need s...
by 75RR
Tue Dec 21, 2021 7:29 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

. There is as you say a single silver ring that activates the irises, there are however on that ring several knurled half-rings that need to be placed in correct relation to the ports that have an iris. In the image below they are not placed in the correct position. The iris activating ring needs to...
by 75RR
Tue Dec 21, 2021 6:30 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

It's really only when reassembled and turning the silver ring there's a problem with snagging/dragging the knurled port selector. Note that each port with an iris has its own iris activator (kurled half-ring which I highlighted in a blue square above). It is supposed to move with the port changer (...
by 75RR
Mon Dec 20, 2021 8:36 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

Oh, that's not mine! No matter, pins on yours still have to line up with slots on other half of condenser for dial in blue square to be able to activate both brightfield and DIC irises. Note: All Zeiss rotary condensers have a brightfield port. Check what letters and numbers appear on the side of y...
by 75RR
Mon Dec 20, 2021 7:12 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

Just saw your photo, those pins control the iris, they must not be slotted in the other half of the condenser correctly.

They seem to be pointing in different directions, try and line them up with the slots.
by 75RR
Mon Dec 20, 2021 7:11 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

LouiseScot wrote:
Mon Dec 20, 2021 6:48 pm
Ps what do the little pins/screws that stick out do?
I think you may not have assembled it correctly. Will open one tomorrow to remind myself what they do :)
by 75RR
Mon Dec 20, 2021 6:46 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

In my DIC condenser, each DIC port has its own iris, and the same dial that works for brightfield works with them.

Check what letters and numbers appear on the side of your condenser - the one over the white line is the one that is active.
by 75RR
Mon Dec 20, 2021 6:32 pm
Forum: Microscopes and optics
Topic: Zeiss Turret Condenser Question
Replies: 40
Views: 24430

Re: Zeiss Turret Condenser Question

All rotary Zeiss condensers have the same controls, though the type of port may vary.
.
by 75RR
Sun Dec 19, 2021 8:53 pm
Forum: For forum members who want to buy and sell equipment
Topic: cndbvhksdbvhsdbvlbqsdfnkl
Replies: 8
Views: 4021

Re: cndbvhksdbvhsdbvlbqsdfnkl

MichaelG. wrote:
Sun Dec 19, 2021 7:49 pm
Is the new subject-line some sort of ‘in-joke’ for the cognoscenti ?

Sorry but it’s completely lost on me. :oops:

MichaelG.
OP, unhappy with his welcome, substituted content and subject of his posts with random letters - Oliver subsequently deleted post.
by 75RR
Sun Dec 19, 2021 1:59 pm
Forum: For forum members who want to buy and sell equipment
Topic: cndbvhksdbvhsdbvlbqsdfnkl
Replies: 8
Views: 4021

Re: For Sale: set of semi - apo Plan Fluor objectives

Your first post on the forum is to sell something!

Read this post: viewtopic.php?f=16&t=14455#p115309
by 75RR
Thu Dec 16, 2021 8:45 pm
Forum: Pictures and Videos
Topic: Melosira, Biddulphia & Odontella Diatoms
Replies: 9
Views: 3712

Re: Melosira, Biddulphia & Odontella Diatoms

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Third diatom Odontella mobiliensis ?
by 75RR
Thu Dec 16, 2021 8:02 pm
Forum: Pictures and Videos
Topic: Melosira, Biddulphia & Odontella Diatoms
Replies: 9
Views: 3712

Re: Melosira, Biddulphia & Odontella Diatoms

.
Gold mine! 3 fascinating diatoms in abundance - get in there with the 63x :)