Search found 79 matches

by jimur
Tue Nov 12, 2019 8:57 pm
Forum: Microscopes and optics
Topic: Something is out of alignment - but what?
Replies: 20
Views: 896

Re: Something is out of alignment - but what?

Is that a swing out filter carrier on the bottom of the condenser?
by jimur
Mon Oct 21, 2019 10:21 am
Forum: Microscopes and optics
Topic: Question on Leitz objectives
Replies: 5
Views: 623

Re: Question on Leitz objectives

Would a plezy not decrease the working distance for the 2.5x?
by jimur
Fri Oct 04, 2019 6:29 pm
Forum: Introduce yourself
Topic: Hi! Memphis, TN, USA NEED ORTHOLUX HELP!
Replies: 3
Views: 825

Re: Hi! Memphis, TN, USA NEED ORTHOLUX HELP!

Welcome aboard Don. Nice to see a fellow Memphian in the forum.
by jimur
Wed Sep 04, 2019 5:49 am
Forum: Important announcements
Topic: Forum Update
Replies: 7
Views: 1953

Re: Forum Update

Thanks for all your hard work Oliver.
by jimur
Sat Aug 17, 2019 4:31 am
Forum: Pictures and Videos
Topic: Aspirin Crystals pol
Replies: 2
Views: 423

Re: Aspirin Crystals pol

Yes, only water and slow dry.
by jimur
Fri Aug 16, 2019 1:10 pm
Forum: Pictures and Videos
Topic: Aspirin Crystals pol
Replies: 2
Views: 423

Aspirin Crystals pol

1-IMG_8349-002.JPG
1-IMG_8349-002.JPG (230.65 KiB) Viewed 423 times
by jimur
Wed Jul 24, 2019 9:45 am
Forum: Pictures and Videos
Topic: Sodium ascorbate
Replies: 6
Views: 1811

Re: Sodium ascorbate

nice shots thanx for sharing
by jimur
Sun Jul 21, 2019 12:07 pm
Forum: For forum members who want to buy and sell equipment
Topic: WTB: Leitz mechanical stage for polarizing stage #40, #42 Part Number 553082
Replies: 13
Views: 1303

Re: WTB: Leitz mechanical stage for polarizing stage #40, #42 Part Number 553082

That seems to be the general asking price on ebay. Seems rather high to me as well.
by jimur
Wed May 01, 2019 1:16 pm
Forum: Pictures and Videos
Topic: more crystals
Replies: 3
Views: 1032

Re: more crystals

I'm certainly far from an expert, but the images look pretty good to me. If you haven't already you might try varying the drying time, and/or the liquid used. Also some sources of ascorbic acid have more impurities. I'm sure you are already aware of this but just a reminder.
by jimur
Mon Apr 29, 2019 12:10 pm
Forum: Pictures and Videos
Topic: Salicylic Acid Crystals
Replies: 0
Views: 1407

Salicylic Acid Crystals

salicylic acid-001.jpg
salicylic acid-001.jpg (52.17 KiB) Viewed 1407 times
by jimur
Mon Apr 29, 2019 11:52 am
Forum: Microscopes and optics
Topic: Digital microscopes. This site seems to look down on them
Replies: 25
Views: 1959

Re: Digital microscopes. This site seems to look down on them

You have sparked my curiosity denodan. Would you recommend a bird jones telescope? The microscope you asked opinions for is in a sense microscope world's equivalent of such a telescope. It has a less than desirable bang for the buck value. You have received honest and knowledgeable replies to your q...
by jimur
Fri Apr 26, 2019 11:54 am
Forum: Introduce yourself
Topic: Coming out of the shadows!
Replies: 3
Views: 2540

Re: Coming out of the shadows!

Congratulations on your "coming out". Isn't it a pleasant reward? Though we can't go back, we can always bring joy with us into retirement?
by jimur
Sat Mar 23, 2019 2:44 am
Forum: Microscopes and optics
Topic: Inverted VS. Compound microscopes
Replies: 6
Views: 1252

Re: Inverted VS. Compound microscopes

I appreciate having both and truly enjoy using each. It's a difficult matter for me to chose one over the other. It's as if they compete each with the other to gain my attention. Fortunately they have yet to inflict feelings of guilt on my psyche. :roll: Of course each has strong and weaker traits m...
by jimur
Mon Mar 18, 2019 12:59 am
Forum: Pictures and Videos
Topic: Ascorbic Acid POL
Replies: 6
Views: 1974

Re: Ascorbic Acid POL

Thanks for the reply Radazz. I've wondered about the use and possible effect of vacuum in crystallography. Yes, it can take a fairly long time for the solutions or colloidal dispersions to dry even in normal atmosphere. I find the nicer crystals more often with slower growth but do use a slide warme...
by jimur
Thu Mar 14, 2019 10:26 pm
Forum: Pictures and Videos
Topic: Ascorbic Acid POL
Replies: 6
Views: 1974

Re: Ascorbic Acid POL

Thank you gentlemen. I wasn’t sure it would make a difference, but it seems to have impacted the evaporation pattern. Radazz I have considered a DIY vacuum chamber chamber for a few experiments. A couple of questions please. Were you using a commercial vacuum chamber? What was the vacuum measuremen...
by jimur
Wed Mar 13, 2019 10:38 pm
Forum: Pictures and Videos
Topic: Ascorbic Acid POL
Replies: 6
Views: 1974

Re: Ascorbic Acid POL

nice job
by jimur
Thu Mar 07, 2019 10:28 pm
Forum: For forum members who want to buy and sell equipment
Topic: Leica DMIL, lots of micromanipulation gear, over 10K in objectives
Replies: 12
Views: 2663

Re: Leica DMIL, lots of micromanipulation gear, over 10K in objectives

Thanks for the info. I could list them separately on this forum... But I don't currently have time... And I think hobbyists who want this gear would be willing to checkout the link & pics. I think the manipulators will be of interest. Wow! High dollar items with no returns, no warranty, as is, etc....
by jimur
Tue Mar 05, 2019 10:25 pm
Forum: Pictures and Videos
Topic: my first home-grown crystals
Replies: 4
Views: 1415

Re: my first home-grown crystals

good job Geo-man.
by jimur
Sat Mar 02, 2019 2:47 pm
Forum: Pictures and Videos
Topic: Celery Stalk
Replies: 15
Views: 2502

Re: Celery Stalk

Very well done indeed. Thanks for sharing.
by jimur
Sat Mar 02, 2019 9:46 am
Forum: Microscopy accessories
Topic: Rheinberg Filters
Replies: 7
Views: 7590

Re: Rheinberg Filters

I bought some of this seller's darkfield, circular oblique, and oblique illumination inserts for substage condensers. They are very well made. No experience with the Rheinberg filters, though. If I plan to try Rheinberg illumination, I would have no problem buying his products. Thanks for that feed...
by jimur
Fri Mar 01, 2019 10:31 pm
Forum: Microscopy accessories
Topic: Rheinberg Filters
Replies: 7
Views: 7590

Re: Rheinberg Filters

75RR wrote:Can't say I have purchased any Rheinberg Filters but if you post a link perhaps someone can give you an opinion on them.
Wasn't sure if that was allowed. Thanks for the info. This link should work.

https://www.ebay.com/itm/Microscope-Ima ... 3659993855
by jimur
Fri Mar 01, 2019 10:29 am
Forum: Illumination Techniques
Topic: Easier than I could have believed
Replies: 8
Views: 3439

Re: Easier than I could have believed

A very neat, useful and straight forward modification that, at first thought, offers several potential avenues of enhancement. I like this. Great job and thanks for sharing.
by jimur
Fri Mar 01, 2019 10:18 am
Forum: Microscopy accessories
Topic: Rheinberg Filters
Replies: 7
Views: 7590

Rheinberg Filters

Have any of you purchased or used the lucite Rheinberg Filters I see on Ebay? Considering price and material it seems a tempting purchase. Your thoughts and opinions please? Thanks.

jim
by jimur
Tue Feb 12, 2019 2:25 pm
Forum: Beginner's corner
Topic: Is a eyepiece and an objective enough for a microscope ?
Replies: 19
Views: 4968

Re: Is a eyepiece and an objective enough for a microscope ?

:) I'm sure you're right. I've never been proficient in the process of practical thought.
by jimur
Tue Feb 12, 2019 10:12 am
Forum: Beginner's corner
Topic: Is a eyepiece and an objective enough for a microscope ?
Replies: 19
Views: 4968

Re: Is a eyepiece and an objective enough for a microscope ?

Interesting. I can afford a 3D printer but not a microscope. :?
by jimur
Wed Jan 23, 2019 6:58 pm
Forum: Pictures and Videos
Topic: Snowflakes of Salicylic Acid crystals
Replies: 0
Views: 2216

Snowflakes of Salicylic Acid crystals

Not a very good pic but snow flakes are hard to come by. :)
by jimur
Tue Jan 22, 2019 2:03 pm
Forum: Pictures and Videos
Topic: Green & Brown (Biddulphia pulchella)
Replies: 2
Views: 1421

Re: Green & Brown (Biddulphia pulchella)

Very nice image, great detail. DIC is still wishful thinking for me, but I've got to get into stacking soon. :)
by jimur
Tue Jan 22, 2019 10:19 am
Forum: Pictures and Videos
Topic: crystallography
Replies: 2
Views: 1279

crystallography

Crystallography, a grab bag of surprise. Ascorbic Acid from a different perspective.
by jimur
Mon Jan 21, 2019 10:46 pm
Forum: Pictures and Videos
Topic: Ascorbic Acid POL
Replies: 2
Views: 1109

Re: Ascorbic Acid POL

Some nice eyes showing on that one Radazz. Thanx for sharing.
by jimur
Mon Jan 21, 2019 10:31 pm
Forum: Camera systems and imaging
Topic: reflection in center of FOV
Replies: 43
Views: 10532

Re: reflection in center of FOV

Stray light in the room via the binocular eye pieces? Try turning the room lights off or covering the bino. eye pieces. Just a silly thought from a novice.