Search found 1480 matches

by charlie g
Mon Jan 04, 2021 8:30 pm
Forum: Microscopes and optics
Topic: 100X Dry Objective Working Distance
Replies: 9
Views: 455

Re: 100X Dry Objective Working Distance

Hi mike42, happy new year all. I totally agree that to flat out state: 'why use oil' regards to 100X objectives is a deliberate microscopy performance mistatement....frankly a marketing hollow ploy. I enjoy my Nikon Plan 100X dry, NA 0.90 , 160/ 0.14-0.20, correction-collar objective...under very sp...
by charlie g
Wed Dec 02, 2020 3:34 am
Forum: Pictures and Videos
Topic: Rotifers in DF
Replies: 6
Views: 422

Re: Rotifers in DF

Wonderful array of rotifers...reminds me of the recent televized NYC "Macy's Thanksgiving Parade". I love that red eye color, thanks. charlie g
by charlie g
Wed Dec 02, 2020 3:27 am
Forum: Microscopes and optics
Topic: Unsure of what to purchase
Replies: 7
Views: 572

Re: Unsure of what to purchase

Hi MissRachel....shipping costs are an issue..are you con-US? charlie g, finger-lakes/US
by charlie g
Sat Nov 28, 2020 2:06 am
Forum: Pictures and Videos
Topic: Madame Rotifer
Replies: 4
Views: 263

Re: Madame Rotifer

I enjoy this strong graphic effect, thanks don. I'm impressed that with the tight working distance of dry-60X objectives, I'm impressed you can find...and maintain a sweet spot oblique illumination with the 'pen-light'. Do you do it hand-held, is the torch LED? The qualities of your images here have...
by charlie g
Fri Nov 06, 2020 4:54 pm
Forum: Microscopes and optics
Topic: Help ID this vintage Microscope: ASA Tokyo Model F4
Replies: 9
Views: 1005

Re: Help ID this vintage Microscope: ASA Tokyo Model F4

Hi hannibal, I have quite a few of these quasi-student Japan monocular stands ( many with a name: "Monoscope" on the barrel. These scopes are not good at all for looking at spores...please do not be lured by the low price..it's a gamble on what went down the scopes body-tube all the time an occular ...
by charlie g
Fri Nov 06, 2020 4:36 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

I need to chunk this maple wood before snowfall stays.
by charlie g
Fri Nov 06, 2020 4:31 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

Hi rapidray and Mrsonchus, my 'microscopy wold views' often an excuse to interupt chores...err I'm supposed to be chunking a tree for fire wood ( tree dropped last spring'19)...but I keep stareing at what is under the bark of the chunks of maple-wood! And there was the microscopy of the near pure cu...
by charlie g
Wed Nov 04, 2020 2:41 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

In addition to ostracod micro-crusteaceans (that is a type of : meiofauna), this stable bench culture offers a variety of other meiofauna inhabitants and protozoa 'new to me'.
by charlie g
Wed Nov 04, 2020 2:29 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

The molted 'husks', or shed shells, or molted carapaces of various ostracod molt stages litter fluid samples of this 'Ostracod Island' dish culture. I'm thinking about collecting a variety of shed carapaces to prepare a permanent slide of the growth stages of this meiofaunan. Unlike fresh observed o...
by charlie g
Wed Nov 04, 2020 2:08 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

NormallyI avoid the border areas of wetmount slides with 50/50 mix of sample and methylcellulose viscosity tool..with close working distance higher mag objectives..a mess to clean if your objective touches the border fluids.
by charlie g
Wed Nov 04, 2020 1:57 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

We enjoyed a first light snowfall 11/1/20 here in fingerlakes/US. Before this month..puppie and I collected a second moss covered rock to place in the bench pyrex dish with 'Ostracod Island' moss rock. This first rocks moss has now started to grow off of the rock it was on when collected. With tweez...
by charlie g
Thu Oct 29, 2020 8:48 pm
Forum: Introduce yourself
Topic: Another oregonian
Replies: 4
Views: 1144

Re: Another oregonian

Welcome , and thanks for insight to how high-tech microscopy techs get excellent sourced microscopy gear for home usage. Please share with us in forum, are the high vacum systems, and the err..sputter coating system safe at a home lab, as a home tank of compressed propane for a patio barbeque grill?...
by charlie g
Thu Oct 29, 2020 7:45 pm
Forum: Pictures and Videos
Topic: Burbujas, luz polarizada + retardador.
Replies: 2
Views: 369

Re: Burbujas, luz polarizada + retardador.

Magnifico...bubbles like ice-crystals in frost , each result from an austere solution to physical conditions waters and soaps or others molecules within the waters are exposed to, and make physical sense of for stable existence. To our humble eyes, these are reminders of a stark physical world which...
by charlie g
Wed Oct 07, 2020 3:04 pm
Forum: My microscope
Topic: A thought about size
Replies: 19
Views: 2343

Re: A thought about size

Again, DonS, congrats on a thoughtful thread..you 'keep it real'...and your shared thoughts , your shared microscopy appreciated. All I say is..I sense no need to clutter shared microscopy with yet another layer of size units. I sense it easy enough to use the macroscopic unit "millimeter" to invite...
by charlie g
Wed Oct 07, 2020 1:47 pm
Forum: My microscope
Topic: A thought about size
Replies: 19
Views: 2343

Re: A thought about size

Thanks,DonS. , for a thoughtful thread, for me terrific benefit gained from the folks who posted into this conversation. Thanks thoughtful forum members. I agree with the sentiment that 'limen units' have too many variables packed into the eyes of beholders attempting to share with others 'limen uni...
by charlie g
Sat Oct 03, 2020 6:42 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

These variety of molt-stages offer insight into just when epibiont peritrich ciliates ellect to attach to OStracods...dependant of the constant driver of our seasons.
by charlie g
Sat Oct 03, 2020 6:34 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

'Ostracod Island ' supports a vibrant meiofauna community.
by charlie g
Sat Oct 03, 2020 6:19 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Re: Ostracod Island

Image
by charlie g
Sat Oct 03, 2020 6:13 pm
Forum: Pictures and Videos
Topic: Ostracod Island
Replies: 12
Views: 1093

Ostracod Island

Hi all, please share with puppy and me, a wonderful fall'20 microscopy hike for moss covered stones. Such a moss covered stone now supports duck weed placed on it's surface...the plant assemblage covering the collected stone 'wicks up'/ maintains a water film over the stone. This stone offers wonder...
by charlie g
Tue Aug 25, 2020 6:36 pm
Forum: Pictures and Videos
Topic: Aspidisca walking and swimming
Replies: 5
Views: 786

Re: Aspidisca walking and swimming

Thanks mazo for these observation vids. All these hypotritch ciliates can be enjoyed to the point of a specialty niche ..so much complexity in these plentiful and important protists in aquatic assemblages. Hypotrich ciliates are 'heavy lifters' in freshwater and marine recycling of nutrients from ba...
by charlie g
Tue Aug 25, 2020 5:21 pm
Forum: Microscopes and optics
Topic: Nikon Plan Apo Lambda 20x - ok??
Replies: 39
Views: 3217

Re: Nikon Plan Apo Lambda 20x - ok??

I came to this thread very late...hi all. I sense that when you 'drop duckets' for costly optics...it's good to keep to one brand of stand...to 'mix and match' hinders later selling of a cobbled together stand. One takes many paths with microscopy..if a goal is better resolution and enhanced image c...
by charlie g
Mon Aug 24, 2020 9:35 pm
Forum: Pictures and Videos
Topic: Two ciliates inside a dead rotifer
Replies: 10
Views: 1059

Re: Two ciliates inside a dead rotifer

Thanks wes for this 'andy warhol treatment of protozoa recyclers ' within the shells of dead meioforma'...often times even active and mobile diatoms clusters about 'dead meioforma bodies'. A good thing to do on open space/outdoor collection hikes...is to have a few small vials to collect dead insect...
by charlie g
Mon Aug 24, 2020 8:45 pm
Forum: Pictures and Videos
Topic: Hail Hydra!
Replies: 5
Views: 828

Re: Hail Hydra!

Always good microscopy to observe a brown hydra ( ?Hydra oligactis?). Anton von Lee...first documented these brown hydras in Delft, Netherlands...first documented these hydra's 'budding' as a form of animal reproduction. When you have time, please tell us where you collected these unique animals ( M...
by charlie g
Wed Jun 03, 2020 3:46 pm
Forum: Pictures and Videos
Topic: First attempts at arranging diatoms
Replies: 39
Views: 3484

Re: First attempts at arranging diatoms

Beautiful work, Wes! Thanks for this display of good microtech. charlie guevara BTW, I always wonded if I could collect and save the occasional huge pennate naturally cleared frustules I encounter in wetmounts from time to time...to one day try and mount these frustules. Thanks again Wes for a wonde...
by charlie g
Wed Jun 03, 2020 3:43 pm
Forum: Pictures and Videos
Topic: Forest in a Seed
Replies: 2
Views: 357

Re: Forest in a Seed

Hi, Don , these images reflect the artwork so rich in my sons "Magic Cards" collections. I see many forest 'tree elfs' scampering amongst the thich and entwined forest tree branches in your late evening images here. what type of seed is the specimen depicted in this post? charlie guevara
by charlie g
Wed Jun 03, 2020 3:37 pm
Forum: Pictures and Videos
Topic: Arcella sp., Two different views from 1 stack
Replies: 12
Views: 1848

Re: Arcella sp., Two different views from 1 stack

Thank you Charles K , for sharing master microscopy imaging classes with us. Your images have been fascinating and enjoyable to me for years. Happy summer'20 to all charlie guevara
by charlie g
Wed Jun 03, 2020 3:30 pm
Forum: Introduce yourself
Topic: Hello From NY
Replies: 4
Views: 1008

Re: Hello From NY

Welcome, Mpalmer...of course you will often use oil-immersion high magnifications for spore studies. So 'danke, danke' Roldorf for that excellent mushroom studies resource. Of course you will need a glass micrometer slide and disc optical reticule to place in eyepieces to callibrate all the objectiv...
by charlie g
Wed Jun 03, 2020 3:27 pm
Forum: Introduce yourself
Topic: Hello From NY
Replies: 4
Views: 1008

Re: Hello From NY

Welcome, Mpalmer...of course you will often use oil-immersion high magnifications for spore studies. So 'danke, danke' Roldorf for that excellent mushroom studies resource. Of course you will need a glass micrometer slide and disc optical reticule to place in eyepieces to callibrate all the objectiv...
by charlie g
Wed Jun 03, 2020 2:56 pm
Forum: Identification help
Topic: I call them bell gliders
Replies: 8
Views: 1344

Re: I call them bell gliders

G'day Rossf, your description of the graceful motion of this organism, the fact that they 'seem small in size' for you...well if you can recall their direction of motion...if these small groupings move in the direction of their flagella...please look at images of freshwater Dinobryon sertularia or r...
by charlie g
Thu May 21, 2020 8:59 pm
Forum: Introduce yourself
Topic: Hello from Guam
Replies: 10
Views: 2047

Re: Hello from Guam

Welcome bob, and yahoo...we microscopists love new members and new : 'microscopy world views' from all locations on our small planet! As all folk before have said: welcome, welcome...and the sooner you share macroscopic and compound microscope image captures of your ' neck of the woods'..the better ...