Search found 96 matches

by MikeBradley
Sat Aug 22, 2020 12:44 am
Forum: Identification help
Topic: Help needed identifying two specimens
Replies: 4
Views: 476

Re: Help needed identifying two specimens

Thanks for the suggestion 75RR, I'm now thinking that that image may well be from a branchiopod body part or perhaps part of a larval casing. I'll keep looking! I did take look at Aulacoseira sp. and that was a very interesting and informative diversion from my quest, thanks for the idea. I haven't ...
by MikeBradley
Wed Aug 19, 2020 4:41 am
Forum: Identification help
Topic: Help needed identifying two specimens
Replies: 4
Views: 476

Help needed identifying two specimens

I found these two specimens in a sample from the reed beds in a local freshwater pond. One seems to have some similarities to a pair of diatoms , but unlike any I've seen before, the pair is 60um wide and 75 long, it was taken at 20x 0.46NA . The other image was taken at 40x 0.95 NA and was moving s...
by MikeBradley
Mon Aug 03, 2020 12:40 am
Forum: Identification help
Topic: Is this a bedbug
Replies: 4
Views: 772

Re: Is this a bedbug

Yes Bram, a sample vial would have been handy, they were in the car though, not the bedroom.

Don, thanks for your reassurance, it certainly doesn't look like any "bed-bug" image I've found, leaving alive the mystery of just what this creature was?
Michael
by MikeBradley
Fri Jul 31, 2020 4:26 am
Forum: Identification help
Topic: Is this a bedbug
Replies: 4
Views: 772

Is this a bedbug

When I turned down the sheets on a hotel bed this morning I found this little critter, it was basically all black and 2mm long it moved across the fabric in short jerky movements, almost like a miniature robot After imaging it on my phone I crushed it, so there's no chance for further inspection and...
by MikeBradley
Thu Jul 09, 2020 7:42 pm
Forum: Resources (online, books etc.)
Topic: CDs and Books - Advanced microscopy
Replies: 0
Views: 398

CDs and Books - Advanced microscopy

I have in my possession a couple of slim books and CD’s that belonged to my friend Dr. Jim Pawley, formerly with UW Madison and UBC, Jim died last year. The CD’s and books are either unopened or in mint condition. I have no need for the items and thought they may be of interest to some members of th...
by MikeBradley
Sun Jun 28, 2020 4:39 pm
Forum: For forum members who want to buy and sell equipment
Topic: Olympus BH2 Teaching Bridge set for quick sale
Replies: 5
Views: 1886

Re: Olympus BH2 Teaching Bridge set for quick sale

Scarodactyl, yes, I hadn't thought of that but I suppose that a camera could be used on one (or even both) of the binocular heads and then the usual imaging method could be applied (afocal, relay, or NLK projection). It would be a bit bulky though.
Interesting idea.
Michael
by MikeBradley
Sun Jun 28, 2020 4:32 am
Forum: For forum members who want to buy and sell equipment
Topic: Olympus BH2 Teaching Bridge set for quick sale
Replies: 5
Views: 1886

Re: Olympus BH2 Teaching Bridge set for quick sale

Bob, Yes the PE is for an infinity design (stated in original post) but for some reason it was included in the package that I purchased and I have no use for it, someone might. The package that I'm selling is an add-on for an existing BH2 microscope, it adds the ability for two other users to observ...
by MikeBradley
Sun Jun 28, 2020 1:06 am
Forum: For forum members who want to buy and sell equipment
Topic: Olympus BH2 Teaching Bridge set for quick sale
Replies: 5
Views: 1886

Re: Olympus BH2 Teaching Bridge set for quick sale

PRICE REDUCED I'm still looking for a good home for this teaching bridge, the set is complete with 2 binocular heads, 4 objectives and all the bridge components, all in excellent condition (see images above). The price is now U$150 (buyer pays shipping). The PE projection eyepiece originally include...
by MikeBradley
Thu May 07, 2020 7:06 am
Forum: Pictures and Videos
Topic: Micro stonemasons. Difflugia.
Replies: 21
Views: 2600

Re: Micro stonemasons. Difflugia.

This is very helpful Charles, I couldn't get this info from the manual. One other question concerns the remote operation, is it possible to trigger the shutter using either their IR remote or the hardware switch when tethered to a computer running EOS Utility or some such program via usb cable? Than...
by MikeBradley
Wed May 06, 2020 6:27 am
Forum: Pictures and Videos
Topic: Micro stonemasons. Difflugia.
Replies: 21
Views: 2600

Re: Micro stonemasons. Difflugia.

I read with interest the reasons Charles gave for selecting the 90D. Does it suffer from the vibration issues that plagued the 60D and were still evident to a lesser degree in to 70D and 80D models despite them having EFCS?
Thanks
michael
by MikeBradley
Tue May 05, 2020 2:10 am
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

Scarodactyl, The M50 did connect to the computer, using live view, with either a cable or wifi, but when it's so connected the Bluetooth is disabled - by design it seems. This means that either I have to trigger the shutter from the computer, a metre and a half away or by touching the camera and ine...
by MikeBradley
Mon May 04, 2020 10:39 pm
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

Thanks for that tip Chris
Michael
by MikeBradley
Mon May 04, 2020 9:28 pm
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

Scarodactyl, I don't use it always but it is useful sometimes for positioning a moving object (eyepiece is widefield, image is cropped), checking focus when adjusting a 40x collar, that sort of thing. I like to be able to glance up from the eyepiece and see what the camera is seeing.
Michael
by MikeBradley
Mon May 04, 2020 3:38 pm
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

Thanks for the suggestion Scarodactyl, unfortunately the fixed LCD screen on the Rebel T6 would make its' use in my current setup rather tricky. The other features and the price do looks good though.
Michael
by MikeBradley
Sun May 03, 2020 9:58 pm
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

After a frustrating 3 days I returned the M50 to the store today, thanks to everyone on the site for their inputs. The store refund policy gave a full reimbursement, even including the used memory card. So now I’m back at square one, what camera to get? I’m going to re-browse the site, but any ideas...
by MikeBradley
Sun May 03, 2020 3:13 am
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

Bob, thanks very much for reminding me about the "silent mode" feature. It took some digging but I did find the feature on the M50 but it is only available when shooting in the so called "SCN" mode, in this mode the camera is set to "Auto" and there doesn't seem to be any way to regain control. The ...
by MikeBradley
Sun May 03, 2020 1:52 am
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Re: Canon M50 limitations

Chris, don't worry, EOS Utility does control the camera by USB tethering. My problem is that the computer is too far away from the microscope to be able to use it when trying to focus and capture moving protozoa. For that a remote control at the microscope is essential but neither the phone version ...
by MikeBradley
Sat May 02, 2020 7:30 pm
Forum: Microscopy accessories
Topic: Canon M50 limitations
Replies: 21
Views: 2122

Canon M50 limitations

I bought a Canon M50 to replace a 60Da to eliminate mirror vibrations on my BH2+NFK 1.67. The M50 promised to allow me to continue using use EOS Utility and the image quality is very good, but it doesn’t seem to be possible to live stream to EOS Utility and to use a remote control to trigger the sho...
by MikeBradley
Sat Mar 21, 2020 4:12 pm
Forum: Miscellaneous
Topic: "Fibres" common topic? Did you make interesting observations or photos?
Replies: 17
Views: 3008

Re: "Fibres" common topic? Did you make interesting observations or photos?

The latest edition of the Quekett Journal has a very interesting article titled "Animal, vegetable and mineral: fascinating fibres, their origins, structures and uses" by Joan Bingley - Quekett President. Joan approaches the topic as a microscopist who is also an embroiderer and textile artist. The ...
by MikeBradley
Tue Feb 25, 2020 7:20 am
Forum: Identification help
Topic: Protist ID help please
Replies: 0
Views: 7251

Protist ID help please

I found this protist in a pond water sample. There are very obvious membranelles, but no obvious AZM, I'm not even certain whether this is a side view or even a plan view. I've considered Halteria or Aspidisca as possibilities, but what do the experts here think?
Thanks for any help.
Michael
by MikeBradley
Sun Feb 02, 2020 8:12 pm
Forum: Microscopy accessories
Topic: Zeiss 3 way beam splitter - double image
Replies: 2
Views: 2068

Re: Zeiss 3 way beam splitter - double image

Unfortunately I didn’t get any responses to my original posting. I’d originally had great hopes for using the beam splitter at outreach events, but I’m now considering returning the faulty unit to the vendor and trying to find another one. In other respects it is in near mint condition and I could u...
by MikeBradley
Sun Jan 26, 2020 9:01 pm
Forum: Microscopy accessories
Topic: Zeiss 3 way beam splitter - double image
Replies: 2
Views: 2068

Zeiss 3 way beam splitter - double image

I recently purchased this Zeiss 3 Way Beam Splitter with drawing attachment (part 47 30 51). The plan was to use it in outreach with cameras and the drawing attachment. It appeared to be in pristine condition externally and the vendor had described the optics as excellent. When I use it in straight-...
by MikeBradley
Tue Jan 21, 2020 11:10 pm
Forum: Microscopes and optics
Topic: Zeiss phase cpndenser iris adjustment stiff
Replies: 7
Views: 907

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: 907

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: 907

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: 907

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: 1686

Re: Aecella, are these pseudopods

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by MikeBradley
Wed Jan 15, 2020 3:02 am
Forum: Identification help
Topic: Aecella, are these pseudopods
Replies: 2
Views: 1686

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: 1605

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: 5
Views: 1886

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...