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Mallow Pollen

Posted: Tue Jun 25, 2019 8:28 pm
by MichaelG.
This is from an old slide [mounter: H E Ebbage], made for incident illumination, and labelled CONDENSER

I cheated, and simply placed one of the little LED MiniBulb domes on the stage !!
13 frames at 5 micron steps ... Stacked in Zerene
13 frames at 5 micron steps ... Stacked in Zerene
2019-06-25_MallowPollen.jpg (413.08 KiB) Viewed 1890 times
10x Wild Objective + 10x WideField eyepiece [Charles Perry]
:oops: Typo alert
3x Ealing Objective + 10x WideField eyepiece [Charles Perry]
Unidentified 16mm TV Lens [Made in Austria]
Afocal imaging on 5MP ToupCam

MichaelG.
.

Ref. http://microscopist.net/EbbageH.html

Re: Mallow Pollen

Posted: Tue Jun 25, 2019 8:41 pm
by Hobbyst46
MichaelG wrote:...
Michael,
Those are very nice, thanks ! I have just finished the construction of the latest STLR (Stage Top LED Ring) mark II, from six 5mm LEDs around the objective. Historically, Mallow has been an edible plant, and spread everywhere, but now it is less widespread. I will try and hunt the pollens. If there are still live plants. If not, then "to do" on next December.

Re: Mallow Pollen

Posted: Tue Jun 25, 2019 10:02 pm
by iconoclastica
Is the 'led mini-bulb dome' described in detail somewhere?

Re: Mallow Pollen

Posted: Tue Jun 25, 2019 10:09 pm
by MichaelG.
iconoclastica wrote:Is the 'led mini-bulb dome' described in detail somewhere?
It's the ridiculously cheap, and very effective, ebay item that I have recommended several times.

I will find you a link

MichaelG.

.

Edit: Sorry, it looks like they may be obsolete already ... I can't find them currently listed on ebay.

Edit: This should link to an old listing:
https://www.ebay.co.uk/itm/USB-LED-Nigh ... 2900726945

Re: Mallow Pollen

Posted: Wed Jun 26, 2019 6:20 am
by Roldorf
You could also try one of these or maybe even 3 :D

Mini USB LED Light Torch Flashlight For Laptop Keyboard Night Reading Lamp FG
https://www.ebay.co.uk/itm/Mini-USB-LED ... 2385941246?

Re: Mallow Pollen

Posted: Wed Jun 26, 2019 7:20 am
by MicroBob
Hi Michael,

beautiful image! In the nature there is so much fine detail hidden from the bare eye.
I remembered your LED dome light, but I couldn't really imagine how you could have used it comfortably for incident lighting.
With the search terms led usb 3w one gets a listing of chinese stuff that seems to contain quite a few very interesting products, like a 3W UV led to cure UV glued finger nails or a small articulating lamp with a suction socket.
I recently bought a chinese work lamp (10 or 20 chinese Watts), powered by 1 to 4 18650 Lithium batteries. It works very well when the expectations stay reasonable and it was just a bit over 10€.

Bob

Re: Mallow Pollen

Posted: Wed Jun 26, 2019 7:53 am
by MichaelG.
MicroBob wrote:Hi Michael,

beautiful image! In the nature there is so much fine detail hidden from the bare eye.
I remembered your LED dome light, but I couldn't really imagine how you could have used it comfortably for incident lighting.
...
Thanks, Bob

I was using the little Wild M11, with its gliding circular stage, and simply placed the dome on the stage.

... I was amazed at the 'quality' of the light [which is similar to a bright overcast sky, in landscape terms]. This is presumably attributable to the grade of plastic used for the diffusing dome, and the effort that has gone into its design and manufacture.

Thought I should share this, to demonstrate that lighting can [sometimes] be easy

MichaelG.

Re: Mallow Pollen

Posted: Wed Jun 26, 2019 8:54 am
by mrsonchus
Oh Michael, a really nice image. Captures the spiny-spheres crisply!
As others have said, the hidden details you've shown us are a real treat to the eye, and to the brain come to that.

Lovely work Michael - more.... you know you must! :D :D :)

Re: Mallow Pollen

Posted: Wed Jun 26, 2019 9:23 am
by iconoclastica
MichaelG. wrote: It's the ridiculously cheap, and very effective, ebay item that I have recommended several times.

I will find you a link

MichaelG.
Thanks. I know these and even may still have a couple of them somewhere. Only I never read that name before, nor did I ever see them in conjunction with my microscope. I'll give it a try then, later this year.

Wim

Re: Mallow Pollen

Posted: Wed Jun 26, 2019 7:36 pm
by MichaelG.
Here's a beautiful 'photo essay' by Brian Johnston

http://www.microscopy-uk.org.uk/mag/ind ... allow.html

MichaelG.

.

Edit: and, for reference, a scan of the mounted object
flatbed scanner at 1200dpi
flatbed scanner at 1200dpi
Mallow_pollen.jpg (96.77 KiB) Viewed 1735 times

Re: Mallow Pollen

Posted: Thu Jul 18, 2019 10:46 pm
by MichaelG.
A quick update:
There is what appears to be a rather good lantern slide of the same subject on ebay:
https://www.ebay.co.uk/itm/Glass-Magic- ... 2611071303
... Much more informative than my scan of the microscope slide !!

MichaelG.