Search found 7 matches
- Thu Jul 29, 2021 10:51 am
- Forum: Beginner's corner
- Topic: Buying an 20X objective with long working distance
- Replies: 18
- Views: 5199
Re: Buying an 20X objective with long working distance
I'd throw a bid at this one. https://www.ebay.com/itm/Infinity-Corre ... 4852936194 Might go cheap, and with an NA down at 0.40 there's a chance it will have enough wd. You also wouldn't have to worry about using it even if you're waiting for a deal on a longer wd objective to come up. It is good b...
- Wed Jul 28, 2021 6:09 am
- Forum: Beginner's corner
- Topic: Buying an 20X objective with long working distance
- Replies: 18
- Views: 5199
Re: Buying an 20X objective with long working distance
If you get a metallurgical objective its performance will be lower with a cover slip, at least if the NA os above 0.30. Nevertheless it may still be acceptable a little above that. Then they will not work, as most of the 20X mettallugical objectives I have seen they have a NA above 0.5. After all y...
- Tue Jul 27, 2021 8:10 am
- Forum: Beginner's corner
- Topic: Buying an 20X objective with long working distance
- Replies: 18
- Views: 5199
Re: Buying an 20X objective with long working distance
You didn't identify a brand or system. Sorry for that, my fault. My system is a ZUZY 122/148 model, but that is just a spanish brand for Chinese imported microscopes. They are similar to AMSCOPE microscopes (Pretty sure same manufacturer). Those objective are (UIS - Universal infinity System) Olymp...
- Mon Jul 26, 2021 9:26 pm
- Forum: Beginner's corner
- Topic: Buying an 20X objective with long working distance
- Replies: 18
- Views: 5199
Buying an 20X objective with long working distance
Hello all, Recently I upgraded to an infinity corrected microscope, but as usual it has the common 4X,10X,40X and 100X set up. I wanna buy an 20X objective that is the most useful for me, as my hobby is to look into water samples. I have start searching for a 20X plan infinity objective, and most of...
- Sun Jul 18, 2021 9:27 am
- Forum: Microscopes and optics
- Topic: ZUZI 122/108(160) or 122/148(infinity)
- Replies: 3
- Views: 1171
Re: ZUZI 122/108(160) or 122/148(infinity)
Many thanks for your reply. They have been very helpful. Most of the lower end Chinese infinity systems follow the Olympus standard, 180mm with 45mm parfocal rms-threaded objectives. Olympus uis/uis2 infinity objectives and many or most other generic infinity objectives readily available on the arke...
- Sat Jul 17, 2021 4:46 pm
- Forum: Microscopes and optics
- Topic: ZUZI 122/108(160) or 122/148(infinity)
- Replies: 3
- Views: 1171
ZUZI 122/108(160) or 122/148(infinity)
Hello collegues. I have found a good bargain of one shop selling those two models on a good price: ZUZI 122/108(160) or 122/148(infinity) (Less than 40% of catalogue price). Now I wonder what is best, go for a standard achromatic 160 mm at 275eur or go for plan infinity corrected at 343eur? My conce...
- Sun Jul 28, 2019 4:19 pm
- Forum: Introduce yourself
- Topic: Hello from Barcelona
- Replies: 1
- Views: 3080
Hello from Barcelona
Hello all and specially Oliver. I joined just the forum few days ago. I live in Barcelona and unfortunately there is no microscopist assoiaction in the area. (To be honest I think there is non public microscopist association in Spain as there are in Germany or UK). I am an amateur in this subject bu...