Search found 42 matches

by microgreen
Tue May 12, 2015 9:57 am
Forum: Home-made microscope adaptations
Topic: 3W LED That Works Well For Me..
Replies: 17
Views: 4771

Re: 3W LED That Works Well For Me..

Does anyone know if a dimmer can be used for this lamp ?
Tony
East Riding of Yorkshire(UK)
by microgreen
Wed Apr 08, 2015 5:10 pm
Forum: Pictures and Videos
Topic: Tardigrade - Water Bear - Moss Piglet
Replies: 10
Views: 1815

Re: Tardigrade - Water Bear - Moss Piglet

It looks to me that the Tardy is trying to walk on the underneath of the cover slip ?
Nice film
Tony
(East Riding of Yorkshire UK)
by microgreen
Wed Mar 11, 2015 6:04 pm
Forum: Microscopes and optics
Topic: Diopter jammed, need suggestions please
Replies: 5
Views: 2447

Re: Diopter jammed, need suggestions please

Hi CE It could be solidified Russian tank grease or is there a dioptre locking screw? It does look like the lens tube could be taken off by removing the base fixing screws. I don't think that removal of the prism covers would give you access to the dioptre adjustment mechanism. I'm sure you will hav...
by microgreen
Fri Mar 06, 2015 11:09 pm
Forum: Pictures and Videos
Topic: Algae and filters
Replies: 27
Views: 3900

Re: Algae and filters

CE
Whatever - in my view the darkfield IS darkfield and the Rheinberg IS Rheinberg(the focus may be a tad out but they are still good images)
Tony
East Riding of Yorkshire(UK)
by microgreen
Thu Mar 05, 2015 11:10 am
Forum: Pictures and Videos
Topic: New to me rotifer
Replies: 4
Views: 1236

Re: New to me rotifer

Hi Les
I think you're right it being a Testudinella - maybe patina (but I could be wrong !)
Tony
East Riding of Yorkshire
by microgreen
Wed Mar 04, 2015 11:29 pm
Forum: Beginner's corner
Topic: Attempting Rheinberg-- first steps
Replies: 13
Views: 4760

Re: Attempting Rheinberg-- first steps

Arthur Strange published his method in the 1980's The stops are made from polarising material. 1/ A disc ,the diam of your filter holder is cut and a quadrant is cut out. 2/ A smaller disc is cut from the polar material then centred(accurately)on the disc and accurately crossed and fixed in place.(s...
by microgreen
Wed Mar 04, 2015 8:04 pm
Forum: Miscellaneous
Topic: How to fix a damaged book?
Replies: 10
Views: 3300

Re: How to fix a damaged book?

I agree with Peter - clean up the covers and laminate them.Remove the spiral from the pages and dispose of it. Get a ring binder(the kind with two split rings - some have four - for holding the pages) You may be lucky and find you can line up existing holes in the pages with the rings Of course you ...
by microgreen
Wed Feb 18, 2015 3:43 pm
Forum: Microscopes and optics
Topic: Help with Olympus KHC repair
Replies: 6
Views: 2915

Re: Help with Olympus KHC repair

Hi

Have a look at this :-http://www.alanwood.net.

Look at Microscope Catalogues,instruction manuals and scroll down to Olympus KHC - Olympus KH Microscopes exploded parts diagrams
You might find what you're looking for there

Good luck
Tony
by microgreen
Tue Feb 10, 2015 1:33 pm
Forum: Pictures and Videos
Topic: Some more samples from the haematococcus culture
Replies: 13
Views: 2615

Re: Some more samples from the haematococcus culture

I don't know what it is - but I don't think the last image is of a Volvox - it's too tidy :) But I could be wrong
by microgreen
Tue Feb 10, 2015 1:27 pm
Forum: Pictures and Videos
Topic: Midge Larva head with black eyes and sharp teeth
Replies: 4
Views: 1267

Re: Midge Larva head with black eyes and sharp teeth

I could be wrong, but I think it's a Chaoborus sp. larva
Their transparency gives them the name "ghost" or "phantom" larvae (phantom midge)
by microgreen
Wed Jan 28, 2015 10:33 pm
Forum: Pictures and Videos
Topic: Onion Skin Oxalate Crystals
Replies: 9
Views: 1982

Re: Onion Skin Oxalate Crystals

I know my eyes are not in their prime, but I cannot see any bubbles in this image.
Bubbles, in my experience, usually show as black circles with white centres.
Could you indicate where the bubbles are?
by microgreen
Sun Jan 11, 2015 6:40 pm
Forum: Pictures and Videos
Topic: Juncus inflexus
Replies: 6
Views: 1878

Re: Juncus inflexus

Hello Manfred

These are excellent sections,especially made with a homemade microtome.They look to be pretty thin

Perhaps you might show us it ??

Tony
East Riding of Yorkshire (UK)
by microgreen
Thu Jan 08, 2015 6:30 pm
Forum: Pictures and Videos
Topic: Heamatococcus in my culture bottle
Replies: 16
Views: 3126

Re: Heamatococcus in my culture bottle

gekko

You should be able to obtain Gum Arabic from an artists materials shop.
Ordinary wallpaper paste is a good substitute for Methylcellulose - provided the paste doesn't have a fungicide in its formula :(

Happy New Year
Tony
East Riding of Yorkshire(UK)
by microgreen
Sat Dec 27, 2014 5:02 pm
Forum: Collecting microscopes and slides
Topic: Diatom Slide
Replies: 10
Views: 4645

Re: Diatom Slide

Hello 75RR The mounter is Klaus Kemp,a very well established master of the art(and skill) of mounting diatoms. I have one of his 8 form test mounts and I am very well pleased with it. The slide was very clean( no air bubbles) The slide was well packaged in a plastic slide mailer for posting. Unless ...
by microgreen
Mon Dec 22, 2014 11:12 pm
Forum: Resources (online, books etc.)
Topic: Adult intermediate level book recomendations wanted
Replies: 8
Views: 3271

Re: Adult intermediate level book recomendations wanted

Don't rush the eggnog ;)

Best wishes for Christmas and the New Year
Tony
East Riding of Yorkshire(UK)
by microgreen
Sun Dec 21, 2014 7:24 pm
Forum: Resources (online, books etc.)
Topic: Adult intermediate level book recomendations wanted
Replies: 8
Views: 3271

Re: Adult intermediate level book recomendations wanted

Hello again. I've just thought of another modern book - SAFE MICROSCOPIC TECHNIQUES FOR AMATEURS -by Walter Dioni. It deals with safe and simple techniques used in microscopy(as the title suggests) using everyday "chemicals". Another book would be"PRACTICAL MICROSCOPY" by Eric Marston you may get th...
by microgreen
Sun Dec 21, 2014 11:18 am
Forum: Resources (online, books etc.)
Topic: Adult intermediate level book recomendations wanted
Replies: 8
Views: 3271

Re: Adult intermediate level book recomendations wanted

Hello Dale Try - "EXPLORING WITH THE MICROSCOPE" - by WERNER NACHTIGALL ,It is a well written , hands on book for the new comer or as a refresher course. Published by Sterling Publishing Co.Inc. New York ISBN 0-8069-0866-1 "THE MICROSCOPE AND HOW TO USE IT" - by Dr GEORG STEHLI DOVER PUBLICATIONS,IN...
by microgreen
Sat Dec 20, 2014 7:37 pm
Forum: Pictures and Videos
Topic: Spirogyra
Replies: 8
Views: 2192

Re: Spirogyra

What are the grey steaks and blots on the second image?
by microgreen
Sat Dec 20, 2014 2:00 pm
Forum: My microscope
Topic: My microscopes
Replies: 8
Views: 5634

Re: My microscopes

Re the"Dalek"
It is a Gillett and Sibert microscope not a McArthur
Sorry
Tony
East Riding of Yorkshire(UK)
by microgreen
Fri Dec 19, 2014 5:49 pm
Forum: My microscope
Topic: My microscopes
Replies: 8
Views: 5634

Re: My microscopes

Here are some of my microscopes,the first one is a Lomo/Swift hybrid http://i1289.photobucket.com/albums/b514/microgreen1/IMG_8492_zpsfac245b4.jpg The second is a Meopta field microscope http://i1289.photobucket.com/albums/b514/microgreen1/IMG_8494_zps7223d9dd.jpg The third and forth are two version...
by microgreen
Thu Dec 18, 2014 6:33 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

I haven't noticed any artifacts in video as I don't do video through the microscope,I do take the occasional still image for reference,but then I use the halogen lighting. For general microscopy I'm very happy with the 12mm LED. You may have spotted the lamp on the Lomo? It's a barrel from a camera ...
by microgreen
Thu Dec 18, 2014 10:32 am
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

Hi Les Isn't the circuit I use for my LED lighting the same"nice clean DC supply for the LED and adjusting the brightness with a good old fashioned linear regulator" ? I haven't had heat problems in any part of the circuit - and I've used the same 12v LED bulb for approx. 4-5 years. As you say the c...
by microgreen
Tue Dec 16, 2014 1:04 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

In answer to your questions :- 1/ Yes 2/ I use a universal regulator input - 230v~50Hz 33.4w output - 3v 4.5v 6v 7.5v 9v 12v current1200mA 14.4VA(max) 3/ 10mm 12v White 4/ No -I'm not interested in doing video - I only take a photograph if I need to :| 5/ No - they are switches - if you look at the ...
by microgreen
Mon Dec 15, 2014 3:10 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

OK Here are some more piccies. 1 http://i1289.photobucket.com/albums/b514/microgreen1/IMG_8491_zps78185047.jpg 2 http://i1289.photobucket.com/albums/b514/microgreen1/IMG_8490_zps42da1b18.jpg 3 http://i1289.photobucket.com/albums/b514/microgreen1/IMG_8474_zps9e5b2ff4.jpg I hope they show how simple i...
by microgreen
Fri Dec 12, 2014 6:28 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

Why make a complicated (technical)circuit when a simple,and safe,circuit will do the job? I've used this lighting base for a number of years with no problems at all. I have other microscopes(including an Olympus inverted and a Watson System 70)with built in lighting and this "non technical" base wor...
by microgreen
Thu Dec 11, 2014 2:26 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

Hi Les My Biolam had the wheel fine focus, but I didn't like it so I got an older model off eBay and swapped the base. In fact the whole microscope has undergone many mods, I bought it new (my first microscope) :),in the early 90's. I now have a few more than that now Tony East Riding of Yorkshire(UK)
by microgreen
Wed Dec 10, 2014 6:54 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

The contents are nothing more than wire and a domestic 12v lighting transformer
by microgreen
Wed Dec 10, 2014 6:33 pm
Forum: Home-made microscope adaptations
Topic: New project: LED conversion for LOMO Biolam
Replies: 82
Views: 37520

Re: New project: LED conversion for LOMO Biolam

OK! Here are some photos(I hope) of my light base which I made a few years ago and it's still going good 1/ http://i1289.photobucket.com/albums/b514/microgreen1/microscope/IMG_8474_zpsb1cd88ea.jpg[/imgThis is the rear of the base. 2/ http://i1289.photobucket.com/albums/b514/microgreen1/microscope/IM...
by microgreen
Tue Dec 02, 2014 10:51 am
Forum: Microscopes and optics
Topic: Dark Field for Higher Magnifications
Replies: 11
Views: 4029

Re: Dark Field for Higher Magnifications

Point 3 that gecko made is the best method by far, and the easiest.

If you'll forgive the pun - it's spot on ;)

Tony
East Riding of Yorkshire(UK)
by microgreen
Wed Nov 19, 2014 1:26 pm
Forum: Pictures and Videos
Topic: Ortie
Replies: 6
Views: 2094

Re: Ortie

Interesting photographs - I liked the first one very much Are the photographs of the hairs on the stem? I ask as I have a photograph of a leaf hair on another thread started by Manfred(Brennessel-stinging nettle-urtica dioica)and the hairs are very different The leaf hairs have a small ball at the p...