Search found 108 matches
- Fri Jun 16, 2023 11:37 am
- Forum: Collecting microscopes and slides
- Topic: Bausch & Lomb Jug Handle Model CAH Microscope
- Replies: 6
- Views: 3672
Re: Bausch & Lomb Jug Handle Model CAH Microscope
I would take issue with Apochronat's comment about the Bausch & Lomb Jug Handle scope having little intrinsic value despite the number of scopes made. I have a small collection of vintage microscopes that are of great value to me and I share Garygm's sentiment about owning a piece of history. My mos...
- Mon Jun 05, 2023 1:27 am
- Forum: Microscopes and optics
- Topic: How many microscopes are enough? :<)
- Replies: 31
- Views: 9383
Re: How many microscopes are enough? :<)
Wow, what a wonderful collection. My goal is to acquire some vintage American made microscopes (Spencer, American Optical, Bausch & Lomb) from the early 1900's to the 1940's. The pictured Seibert Wetzlar is vintage, probably from 1895 to 1910, not sure. When delivered is was badly damaged during shi...
- Sun May 14, 2023 4:05 pm
- Forum: Microscopes and optics
- Topic: How many microscopes are enough? :<)
- Replies: 31
- Views: 9383
Re: How many microscopes are enough? :<)
Microscopes to me are fascinating and precision instruments. How many microscopes is enough depends on what you want them for. I collect vintage microscopes. One is a highly prized Seibert Wetzlar that is at least 125 years old. The level of precision for the late 1800's to early 1900's is remarkabl...
- Sun May 14, 2023 3:14 pm
- Forum: Microscopes and optics
- Topic: Source for parfocal shims?
- Replies: 26
- Views: 6669
Re: Source for parfocal shims?
Par-focal shims are available but are very pricey for what they are. I bought a hole punch and made a clean hole in an index card which fit cleanly over the objective threads. I drew a circle around the hole and cut with a pair of good scissors. The results looked very unprofessional but they did do...
- Sun May 14, 2023 2:18 pm
- Forum: Microscopes and optics
- Topic: Short vs Long Microscope Objectives
- Replies: 3
- Views: 813
Short vs Long Microscope Objectives
Microscopes, for decades, used objectives that were of the "short" design. A few decades ago, all of the microscope manufacturers gravitated over to a longer objective design. Back in the old days, for those that wished to add objectives of different magnifications, etc, to their older microscopes i...
- Tue Apr 11, 2023 12:17 pm
- Forum: Specimens, samples and slides
- Topic: I hate bubbles.
- Replies: 15
- Views: 6689
Re: I hate bubbles.
Bubbles can be very aggravating and makes the final slide look like it was prepared by an amateur. I used to be plagued with bubbles when I mounted the final specimin. It took me a while to figure out what was going on but I thought it was the dry surface of the cover slip or glass slide that contri...
- Tue Apr 11, 2023 11:43 am
- Forum: Specimens, samples and slides
- Topic: buyer beware!
- Replies: 4
- Views: 2269
Re: buyer beware!
Buying old or vintage slides is a "hit" or "miss" endeavour. I have very few vintage slides because of the poor quailty of the remaining specimin. Some slides will last a hundred years depending on the quality of the original preparation. Back in the old days of the early 1900's up until the late 19...
- Thu Feb 16, 2023 3:42 pm
- Forum: Collecting microscopes and slides
- Topic: What makes a microscope collectible?
- Replies: 8
- Views: 3544
Re: What makes a microscope collectible?
The short answer is "whatever you want it to be" I have a small collection of vintage microscopes. My best microscope is a Seibert (the precursor to Leitz) probably manufactured around 1900 or before. It is a superb example of Victorian/Edwardian period precision. The brass fitiings, etc are all mad...
- Fri Feb 03, 2023 7:16 pm
- Forum: Collecting microscopes and slides
- Topic: The Golden Age of Microscopy
- Replies: 4
- Views: 3208
The Golden Age of Microscopy
The 1800's was a period where science, medicine and the microscope were dependant on each other. Titans like Pastuer, Koch, etc, were making amazing breakthroughs in diseases that were ravaging populations. The microscope stood out as the premier instrument to separate fact from fiction. In the late...
- Sun Jan 08, 2023 6:42 pm
- Forum: Collecting microscopes and slides
- Topic: Lafayette Radio and Electronics Microscopes circa 1960
- Replies: 7
- Views: 5226
Re: Lafayette Radio and Electronics Microscopes circa 1960
The posting of my Lafayette Radio and Electronics Microscopes circa 1960 ( actually 1959) article has certainly generated some interesting responses. I was fortunate to live in a time when the inexpensive brands of microscopes of acceptable optical quality were plentiful and at resonable prices with...
- Sun Dec 04, 2022 4:41 pm
- Forum: Beginner's corner
- Topic: artificial light
- Replies: 12
- Views: 3248
Re: artificial light
Daylight, meaning a cloudless blue sky with the sun unobscured, measures 5200 Kelvin. Depending on what artificial light you use, the color temperarure varies immensely and will require a filter (usually a blue filter) to give an approximate and desired white light. The old fashioned tungsten light ...
- Wed Nov 02, 2022 12:20 pm
- Forum: My microscope
- Topic: Made in China lenses and quality
- Replies: 4
- Views: 2582
Re: Made in China lenses and quality
I agree with Scarodactyl, some Chinese objective lenses are good, some are bad and you can't always tell by its price. Many times it is difficult to determine if the unknown objective lens you are viewing through is good, mediocre or bad. If you have some present objective lenses that you know are o...
- Mon Oct 24, 2022 10:54 pm
- Forum: Microscopes and optics
- Topic: Comparison of the tiny scopes
- Replies: 7
- Views: 1617
Re: Comparison of the tiny scopes
Interesting post. Many inexpensive "entry level" microscopes were available from Japan to microscope enthusiasts with limited financial resources in the mid to late 1950's . Some models delivered decent optical quality even at the higher magnifications although they did suffer somewhat in color corr...
- Mon Oct 24, 2022 10:29 pm
- Forum: Microscopes and optics
- Topic: An objective for every situation
- Replies: 6
- Views: 1362
An objective for every situation
I never thought I would collect so many objetives but I seem to have one for just about every need. It looks impressive but there is a lot of duplication. However, several of the objectives have longer working distances than others, which I find that useful when viewing pond water without using a co...
- Mon Sep 05, 2022 12:54 am
- Forum: Specimens, samples and slides
- Topic: Set of slides purchased on eBay
- Replies: 1
- Views: 1342
Re: Set of slides purchased on eBay
I bought a set of patholgy slides from China on EBay that are all excellent. Superb Hematoxylin and Eosin staining. They were not cheap. I compared them to slides made by a Histology lab that is an adjunct to our local hospital and they were even better.
- Mon Sep 05, 2022 12:39 am
- Forum: Illumination Techniques
- Topic: Oblique Insert for Olympus BH2
- Replies: 1
- Views: 1183
Re: Oblique Insert for Olympus BH2
I have this device for the Olympus BH2 and it works very well. I have an Olympus CH2 which is a low level version of the BH2 and using darkfield inserts is easy. When I got the BH2 I was disappointed to find out that dark field viewing was not possible until the device was made available. It came wi...
- Tue Aug 30, 2022 11:18 pm
- Forum: Microscopes and optics
- Topic: Source for parfocal shims?
- Replies: 26
- Views: 6669
Re: Source for parfocal shims?
I cut my own parfocal shims from a index card. It's was to cut the outer circle but the inner circle is difficult. The hole punch looks like it will make a cleaner inner hole.
- Fri Aug 05, 2022 11:55 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: Olympus BH2-BHT
- Replies: 4
- Views: 1950
Re: Olympus BH2-BHT
Hi Gary:
Sorry about the delay. I was out of town for a month. What additional information would you like ?
If you furnish me with your email address we can correspond privately.
Sorry about the delay. I was out of town for a month. What additional information would you like ?
If you furnish me with your email address we can correspond privately.
- Thu Aug 04, 2022 12:00 am
- Forum: Collecting microscopes and slides
- Topic: Old prepared slides vs new slides
- Replies: 4
- Views: 3485
Re: Old prepared slides vs new slides
Old slides usually suffer from yellowing and cracking of the mounting medium, which is usually Canada Balsam. In some cases, you can find perfect slides from the late 1800's early 1900's but my experience was that it was a rare case. The round cover slips are many times, ringed, with a black paint l...
- Mon Jul 25, 2022 4:05 pm
- Forum: Introduce yourself
- Topic: A Question for Oliver
- Replies: 1
- Views: 963
A Question for Oliver
Hello Oliver" I watch your Youtube videos for information and ideas. I have two questions: 1). I noticed that you use, and recommend, Euparal as a Mounting medium because specimins can be mounted directly from 100% alcohol. A few years ago I took this recommendation and purchased Euparal (from Hemst...
- Wed Jul 20, 2022 10:55 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: Olympus BH2-BHT Microscope for Sale
- Replies: 0
- Views: 775
Olympus BH2-BHT Microscope for Sale
Additional images for Olympus BH2-BHT microscope for sale. Microscope, three replacement objective turrents, pair of 10x wide field eyepieces, spare bulbs and external light source for $1800.
Microscope camera an additional $500.
Microscope camera an additional $500.
- Wed Jul 20, 2022 10:49 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: Additional BH2-BHT images
- Replies: 0
- Views: 745
Additional BH2-BHT images
Aditional images for BH2-BHT Olympus Trinocular Microscope. Everything ( Microscope, Three Objective turrets, spare bulbs and additional external color corrected light souce)
$1800. Buyer pays shipping.
$1800. Buyer pays shipping.
- Wed Jul 20, 2022 10:43 pm
- Forum: For forum members who want to buy and sell equipment
- Topic: Olympus BH2-BHT
- Replies: 4
- Views: 1950
Olympus BH2-BHT
Excellent condition Olympus BHT-BHT Trinocular head microscope. This model has a removable objective turret feature that allows rapid changes. Three objective turrets are included ( two five objective turrets and one six objective turret) for a total of 16 objective choices. Objective turrets can be...
- Mon Jul 18, 2022 12:30 am
- Forum: Camera systems and imaging
- Topic: DSLR vs dedicated microscope camera ?
- Replies: 13
- Views: 3247
DSLR vs dedicated microscope camera ?
Is it better to use a single lens reflex camera through a trinocular phototube (with the appropriate compensating eyepiece) or is it better to just use a dedicated microscope camera ?
- Sun Feb 27, 2022 6:38 pm
- Forum: Pictures and Videos
- Topic: What is The best microscope camera?
- Replies: 20
- Views: 7631
Re: What is The best microscope camera?
Thank you for all your responses. Much information to deal with. I learned long ago, before microphotography, that mirror vibration can be detrimental to image quality and if I could always used a tripod. If time allowed, mirror lockup also reduced vibration. Unfortunately, my D5500 doesn't have a m...
- Sun Feb 27, 2022 6:09 pm
- Forum: Microscopes and optics
- Topic: 60x-70x multiple objective comparison. Identities revealed.
- Replies: 23
- Views: 9058
Re: 60x-70x multiple objective comparison. Identities revealed.
I recently saw a short video of a company offering a 100x "dry" objective, claiming the image quality was equal to a similar 100x oil immersion. The video looked like the dry performed equally as well. I'm not sure how it would work out in the real world. Oil immersion is messy, I guess that's why 6...
- Sat Feb 26, 2022 4:57 pm
- Forum: Beginner's corner
- Topic: Objective Lenses
- Replies: 3
- Views: 1483
Re: Objective Lenses
You mentioned that you have room for four objectives but listed 5 objectives \ (4,10,20,40,60). The 20x is a very useful objective for things like entomology, not so much the 40x or 60x. The 40x and 60x are good for bacterial and cellular work. Or you could remove the 10x and use the 4x, 20x, 40x an...
- Fri Feb 25, 2022 11:02 am
- Forum: Beginner's corner
- Topic: 2 ways to get 200X
- Replies: 21
- Views: 8428
Re: 2 ways to get 200X
Most of my microscopy is of insects. This doesn't necessarily require very high magnification. 200x is usually the highest magnification I will ever use for observing insect parts. There are a few ways to obtain this 200x magnification. My main concern is "working distance", the space between the ob...
- Fri Feb 25, 2022 10:18 am
- Forum: Beginner's corner
- Topic: Specimen Storage Time
- Replies: 2
- Views: 1124
Re: Specimen Storage Time
Peter-J:
No one is laughing. Great start to a fascinating hobby. Taking photos through a microscope is not as easy as it may seem. There are too many parameters to consider.
No one is laughing. Great start to a fascinating hobby. Taking photos through a microscope is not as easy as it may seem. There are too many parameters to consider.
- Thu Feb 24, 2022 10:06 pm
- Forum: Beginner's corner
- Topic: Is it really all about the objectives?
- Replies: 16
- Views: 5159
Re: Is it really all about the objectives?
I can't argue that there is not a difference between E series and expensive objectives.I would expect that. I just stated that I was hard pressed to detect a difference, especially since every thing I own is used, not new. I had access to dozens of objectives so had the luxury to pick and choose the...