Search found 74 matches

by MikeBradley
Tue Jan 21, 2020 11:10 pm
Forum: Microscopes and optics
Topic: Zeiss phase cpndenser iris adjustment stiff
Replies: 7
Views: 89

Re: Zeiss phase cpndenser iris adjustment stiff

Doron, I was going to reply by saying that it only had the BF iris as I've only ever used phase condensers where there is only one and none were visible on other windows, but your question prompted me to look more closely at the DIC windows. Initially I could see no sign of irises there either but a...
by MikeBradley
Tue Jan 21, 2020 7:39 pm
Forum: Microscopes and optics
Topic: Zeiss phase cpndenser iris adjustment stiff
Replies: 7
Views: 89

Re: Zeiss phase cpndenser iris adjustment stiff

Buoyed by the success with freeing the phase condenser I decided to try freeing the aperture on a Zeiss DIC/Phase/BF. But on this unit the iris leaves are fully open and any adjustment is impossible. It is almost as though the aperture was locked in the open, could this be the case? If so how can it...
by MikeBradley
Tue Jan 21, 2020 12:57 am
Forum: Microscopes and optics
Topic: Zeiss phase cpndenser iris adjustment stiff
Replies: 7
Views: 89

Re: Zeiss phase cpndenser iris adjustment stiff

Doron and Bob, thanks for the tip. I tried it with Camping fuel (Naphtha) and it solved the problem immediately. Thanks.
Michael
by MikeBradley
Mon Jan 20, 2020 6:17 pm
Forum: Microscopes and optics
Topic: Zeiss phase cpndenser iris adjustment stiff
Replies: 7
Views: 89

Zeiss phase cpndenser iris adjustment stiff

The bright field aperture adjustment on my Zeiss Standard phase condenser is extremely stiff, more so at the open end position of its travel than the closed position. I have tried loosening it by repeated back/forth movement and while this helped initially it wasn't sufficient. I found posts and lin...
by MikeBradley
Wed Jan 15, 2020 5:19 am
Forum: Identification help
Topic: Aecella, are these pseudopods
Replies: 2
Views: 92

Re: Aecella, are these pseudopods

Missing image
Micro_8305Arcella.jpg
Micro_8305Arcella.jpg (80.8 KiB) Viewed 87 times
by MikeBradley
Wed Jan 15, 2020 3:02 am
Forum: Identification help
Topic: Aecella, are these pseudopods
Replies: 2
Views: 92

Aecella, are these pseudopods

I found this Arcella in a pond sample. A couple of pseudopods are visible below the teat but there is also this prominent "veil". Could this be a part of the Arcella or its target? The test itself is 82 micron across and the "veil" is 290 microns in length, (20x SPlan, 0.46).
Thanks
Michael
by MikeBradley
Sat Nov 23, 2019 1:45 am
Forum: Specimens, samples and slides
Topic: Staining forage fish eggs
Replies: 2
Views: 213

Staining forage fish eggs

I’ve been asked to help a local marine citizen science group involved in counting eggs from forage fish (sand lances etc). I’ll be preparing calibrated images to assist in training their new volunteers. I would like to also explore staining of the eggs to enhance visibility against the fine sand bac...
by MikeBradley
Sun Nov 17, 2019 1:47 am
Forum: For forum members who want to buy and sell equipment
Topic: Olympus BH2 Teaching Bridge set for quick sale
Replies: 0
Views: 556

Olympus BH2 Teaching Bridge set for quick sale

I have the following items for sale, they comprise the components needed to add a pair of binocular heads to a standard BH2. The oculars are the L and the LH pairs, all are Widefield, and one is also High Eyepoint. They have been used carefully as teaching tools in the office of a pathologist. I wou...
by MikeBradley
Wed Nov 13, 2019 4:39 am
Forum: Camera systems and imaging
Topic: Camera to fit a Zeiss TV Tube
Replies: 5
Views: 547

Re: Camera to fit a Zeiss TV Tube

Thanks for these responses to my question, It was especially useful to hear the concern raised about the M100 in this application, the missing features are important ones for my applications. Other ideas are still welcome of course!
Michael
by MikeBradley
Tue Nov 12, 2019 5:01 am
Forum: Camera systems and imaging
Topic: Camera to fit a Zeiss TV Tube
Replies: 5
Views: 547

Camera to fit a Zeiss TV Tube

I've been lucky enough to acquire a Zeiss W.Germany long TV tube (47-79-01-990)1 with the C-mount adapter to attach to my C.Z. Standard WL. When coupled to an APS-C camera with an adapter it projects a full FOV to the camera sensor, ideal when used for outreach. To make full use of this new acquisit...
by MikeBradley
Mon Nov 04, 2019 5:29 am
Forum: Identification help
Topic: Seaweed help needed
Replies: 2
Views: 551

Seaweed help needed

Just returned from a day at the Pender Harbour (BC), Seaweed and Mushroom Festival. People were using the dissecting scopes to examine the mushrooms and seaweeds and I was showing the amazing variety of forms and types of spores using my CZ Standard WL. There were literally hundreds of mushroom vari...
by MikeBradley
Mon Oct 21, 2019 3:36 am
Forum: Specimens, samples and slides
Topic: Disposing of stains from home microscopy lab
Replies: 8
Views: 983

Re: Disposing of stains from home microscopy lab

Thanks everyone for the helpful replies. I had not considered absorbing the stains onto suitable materials for solid disposal but I think that’s the way I will go. The vermiculite suggested by Doron is what I intend to try first. I’m only simple exploring plant sections so I won’t be dabbling in the...
by MikeBradley
Sat Oct 19, 2019 4:29 am
Forum: Specimens, samples and slides
Topic: Disposing of stains from home microscopy lab
Replies: 8
Views: 983

Disposing of stains from home microscopy lab

I wonder how other amateur microscopists manage stain disposal? What are the protocols? My lab is my office and it has no sink or running water. Our waste water goes to a community septic system. I will soon start using plant stains including safranin, toluidine, meth. blue, eosin and I'd like to se...
by MikeBradley
Wed Oct 02, 2019 1:42 am
Forum: For forum members who want to buy and sell equipment
Topic: BH2 objectives for sale or exchange
Replies: 1
Views: 965

BH2 objectives for sale or exchange

I’ve decided to sell a couple of the objectives and a photo-eyepiece that came with my BH2 that I rarely (or never) use. I need “hobby funds” to invest in an NFK 1.67x photo eyepiece. I’d also be prepared to negotiate an exchange though. Olympus LWD CPlan 40/0.55 0.7-1.3 Olympus DPlan Apo 40/0.85 UV...
by MikeBradley
Sun Sep 22, 2019 4:00 am
Forum: Identification help
Topic: What is this?
Replies: 3
Views: 1611

Re: What is this?

I subsequently found several more of these organisms, here is one in Bright field at 40x. I'm still not sure what I'm looking at though.
Michael
by MikeBradley
Sat Sep 21, 2019 12:59 am
Forum: Identification help
Topic: What is this?
Replies: 3
Views: 1611

What is this?

Found in garden pond. Objective was 10x SPlan phase low, imaged on Canon D60a afocal setup. The object in the image was 110um long and 20um at the narrowest point.
The shape makes me think pennate diatom, the sample had lots, but this one was different and I see no signs of a raphe.
Thanks
Michael
by MikeBradley
Thu Sep 19, 2019 6:43 am
Forum: Microscopes and optics
Topic: Question about Olympus 40x Splan Apo
Replies: 6
Views: 1754

Re: Question about Olympus 40x Splan Apo

Olympus make a range of LWD and ULWD objectives for use with inverted brightfield microscopes. The 40x have working distances of 2 and 7 mm respectively and work with DIC. Pricey though! See page 12 in this manual on Alan Woods' site. http://www.alanwood.net/downloads/olympus-lb-objectives.pdf Michael
by MikeBradley
Mon Sep 16, 2019 2:11 am
Forum: Microscopes and optics
Topic: What is the function of these graduations
Replies: 18
Views: 2552

Re: What is the function of these graduations

I tried projecting an image directly onto the sensor of a hand-held DSLR and got a shaky but respectable image. I'll try to arrange a fixed support for the camera and post the images.

Thanks everyone for all the detective work in answer to my query!

michael
by MikeBradley
Sun Sep 15, 2019 4:04 am
Forum: Microscopes and optics
Topic: What is the function of these graduations
Replies: 18
Views: 2552

Re: What is the function of these graduations

So if it's a photo-compensating eyepiece does this mean that it is also a projection eyepiece and so could be used for direct projection to a sensor? If not then what is its advantage over a regular KPL? I always understood that Kpl eyepieces were fully compensated and could be used for AFocal photo...
by MikeBradley
Sat Sep 14, 2019 4:15 pm
Forum: Microscopes and optics
Topic: What is the function of these graduations
Replies: 18
Views: 2552

What is the function of these graduations

I came across this eyepiece recently. What is the purpose of the 10 to Infinity scale? Is it a dioptre adjustment?
It functions normally as an 23mm eyepiece.
Thanks
Michael
by MikeBradley
Fri Sep 06, 2019 2:04 am
Forum: Microscopes and optics
Topic: Is this a projection eyepiece?
Replies: 4
Views: 578

Re: Is this a projection eyepiece?

The unit is 13.5 cm in length and carries no makers information, at least none visible externally. It projects a respectable image onto a screen at roughly 4cm from the edge of the c –mount, I haven't tried measuring this precisely yet. Since a brand name is absent, I don’t expect that it incorporat...
by MikeBradley
Thu Sep 05, 2019 2:10 pm
Forum: Microscopes and optics
Topic: Is this a projection eyepiece?
Replies: 4
Views: 578

Is this a projection eyepiece?

Can anyone identify this item? It appears to be a projection eyepiece with a c mount adapter at one end, a lens at the other and an internal lens that can be moved up or down the tube and locked in place. The barrel fits a 23mm eyepiece tube and it does project a real image.
Thanks
Michael
by MikeBradley
Mon Sep 02, 2019 4:09 pm
Forum: Microscopes and optics
Topic: Which microscope is this nosepiece for?
Replies: 7
Views: 797

Re: Which microscope is this nosepiece for?

I've added a picture taken from the side that shows the mounting keyway to assist in identification.

Yes ImperatorRex I had noticed the very nice (and pricey) multi-immersion objective and it works as advertised when mounted on my Standard.

Michael
IMG_7951a.jpg
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by MikeBradley
Mon Sep 02, 2019 6:19 am
Forum: Microscopes and optics
Topic: Which microscope is this nosepiece for?
Replies: 7
Views: 797

Which microscope is this nosepiece for?

I came across this item in an estate collection, it seems to be brand shiny new. Can anyone tell me which microscope model this nosepiece is for? It looks very like a Zeiss design but the mounting rails are too narrow to fit the Zeiss Standard range.
Thanks
Michael
IMG_7946a.jpg
IMG_7946a.jpg (223.86 KiB) Viewed 797 times
IMG_7947a.jpg
IMG_7947a.jpg (221.92 KiB) Viewed 797 times
by MikeBradley
Mon Sep 02, 2019 12:41 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: items to complete a Zeiss Standard WL
Replies: 0
Views: 1448

Wanted: items to complete a Zeiss Standard WL

I am in the process of assembling a Zeiss Standard WL - Black. I am currently looking for a matching Trinoc head and a matching Optovar unit for reasonable prices. Can anyone suggest potential sources?
I am located in Canada.
Thanks

Michael
by MikeBradley
Sat Aug 31, 2019 7:48 pm
Forum: Camera systems and imaging
Topic: Smartphone adapter
Replies: 14
Views: 1739

Re: Smartphone adapter

I recently invested in this device and I'm very happy with it. The casing is customised for each phone model and it comes with a 10x lens installed making the installation as simple as changing an eyepiece. The unit comes with a set of adapters for different tube widths, including telescopes. https:...
by MikeBradley
Sat Aug 31, 2019 4:54 am
Forum: Microscopes and optics
Topic: Which model of Carl Zeiss Standard is this?
Replies: 49
Views: 3384

Re: Which model of Carl Zeiss Standard is this?

I have now been fortunate to locate some parts taken from a Standard GFL, they included a regular, rather stiff, phase condenser and an aligned nose-piece. As a result I now have a fully operational Standard WL(Black) carrying the following: CZ Plan 2.5x/0.08 CZ Neofluar 16x/0.4 Ph2 CZ Plan 25x/ 0.4...
by MikeBradley
Tue Aug 27, 2019 12:06 am
Forum: Microscopes and optics
Topic: Which model of Carl Zeiss Standard is this?
Replies: 49
Views: 3384

Re: Which model of Carl Zeiss Standard is this?

It does appears that I have 2 auxiliary lenses 75RR. The lower swing out filter holder had been modified to carry both a filter and a lower auxiliary lens by adding a short (~10mm) extension tube secured with a with locking ring. A very nice job.
Thanks
Michael
by MikeBradley
Sun Aug 25, 2019 7:00 pm
Forum: Microscopes and optics
Topic: Which model of Carl Zeiss Standard is this?
Replies: 49
Views: 3384

Re: Which model of Carl Zeiss Standard is this?

Here is the part in question, I'd forgotten to include it with my earlier post - sorry!
Michael
by MikeBradley
Sun Aug 25, 2019 5:03 pm
Forum: Microscopes and optics
Topic: Which model of Carl Zeiss Standard is this?
Replies: 49
Views: 3384

Re: Which model of Carl Zeiss Standard is this?

Well the vacation is over and it's back to understanding the Zeiss Standard that I now own. I have noticed that while the condenser slide arm carries the upper Auxiliary lens as shown in the literature the lower unit is not the simple filter holder but rather carries optics in a 2.5 mm deep swing in...