Search found 2713 matches

by zzffnn
Wed Jul 22, 2015 2:39 pm
Forum: Home-made microscope adaptations
Topic: Possible 10 Watt LED Light Source..
Replies: 14
Views: 4604

Re: Possible 10 Watt LED Light Source..

Bill, How to place GUF and how to check it can be found in the last post (with photos) in this thread: http://www.photomacrography.net/forum/viewtopic.php?p=173507#173507 From the post right above that last post, you can download my new template too. This template should work for most condensers. Th...
by zzffnn
Wed Jul 22, 2015 1:33 am
Forum: Specimens, samples and slides
Topic: Metal Catalysts and Resin Beads
Replies: 9
Views: 2872

Re: Metal Catalysts and Resin Beads

Well, please give it a try with what you have plus a LED flashlight or diffused camera flash. That way, at least you would be able to guesstimate if your LWD 40x can resolve the pores of catalyst? And does your LWD 40x says 0.17 (that means you need to put on cover slip)? Maybe suspend metal powers ...
by zzffnn
Wed Jul 22, 2015 12:01 am
Forum: Specimens, samples and slides
Topic: Metal Catalysts and Resin Beads
Replies: 9
Views: 2872

Re: Metal Catalysts and Resin Beads

houstontx, You may need to use epi illumination (epi light source, polarizer/analyzer and epi objectives). Adding that to your personal Olympus scope will be expensive. I am guessing you need to look at pores of your metal catalyst (unoccupied pore = available catalyst site, occupied = not usuable)?...
by zzffnn
Tue Jul 21, 2015 1:05 pm
Forum: Home-made microscope adaptations
Topic: Possible 10 Watt LED Light Source..
Replies: 14
Views: 4604

Re: Possible 10 Watt LED Light Source..

Bill, You have sharp eyes and did some great digging work! In theory, both of the products that you linked should work. My concern for the adapter you linked to is: It is $20, as opposed to my branded adapter at $50. Does Orion charge $30 just to stamp its brand name? I hope they are of the same qua...
by zzffnn
Mon Jul 20, 2015 1:09 pm
Forum: Home-made microscope adaptations
Topic: Possible 10 Watt LED Light Source..
Replies: 14
Views: 4604

Re: Possible 10 Watt LED Light Source..

Hi 75RR, If you read my thread again, you will find that the 3rd post links to a poor photo of mine that was out of focus (sorry I have not got time to take better pictures, but based on visual observation, I can tell you that GUF [gradient universal filter] is very capable if you optimize it in you...
by zzffnn
Mon Jul 20, 2015 2:20 am
Forum: Home-made microscope adaptations
Topic: Possible 10 Watt LED Light Source..
Replies: 14
Views: 4604

Re: Possible 10 Watt LED Light Source..

Bill, I use these two LED headlamps: http://www.amazon.com/gp/product/B00SWQXY1G?psc=1&redirect=true&ref_=oh_aui_search_detailpage http://www.amazon.com/gp/product/B00GFMA35Y?psc=1&redirect=true&ref_=oh_aui_search_detailpage They fit under the stages of most microscopes, once you take off the straps...
by zzffnn
Mon Jul 20, 2015 1:01 am
Forum: My microscope
Topic: Olympus BHTU
Replies: 17
Views: 4449

Re: Olympus BHTU

Bill and Chris,

Please kindly check and reply the private messages that I sent to you. Thank you!

Cheers,
Fan
by zzffnn
Sun Jul 19, 2015 5:11 pm
Forum: Pictures and Videos
Topic: Fish Tank Filter
Replies: 3
Views: 685

Re: Fish Tank Filter

Have you compared the biodiversity between your filter vs a plant from the tank? Filter may concentrate lighter floating protist, as opposed to sinking/attaching protists. I am guessing you will see a lot protists attached to plants as well. Such as hydra, ostracod, water bear and whatever that is b...
by zzffnn
Sun Jul 19, 2015 4:58 pm
Forum: Pictures and Videos
Topic: Arcella
Replies: 3
Views: 802

Re: Centropyxis

Probably not. The subject protist itself may be thicker in the center and not flat. Your image looks great as it is.
by zzffnn
Sun Jul 19, 2015 4:32 pm
Forum: My microscope
Topic: Olympus BHTU
Replies: 17
Views: 4449

Re: Olympus BHTU

Chris, Shall all four of us have a meet at Kurt's place in League City? It is going to be lots of fun! You are I are probably 15 minutes of driving from each other. Kurt does not want to drive to Houston. Bill, what do you think? You live outside the 610 loop too and not far from League City, right?...
by zzffnn
Sat Jul 18, 2015 4:56 pm
Forum: My microscope
Topic: Olympus BHTU
Replies: 17
Views: 4449

Re: Olympus BHTU

Thank you Bill. Maybe because my low post count, I still could not find/access PM (I tried to "compose PM" and was told that I cannot do it yet) . I will try to contact Oliver I guess.

Sorry for diverting your topic houstontx.

Edit: How funny, that PM button appear right after I posted my 3rd post.
by zzffnn
Sat Jul 18, 2015 3:24 pm
Forum: My microscope
Topic: Olympus BHTU
Replies: 17
Views: 4449

Re: Olympus BHTU

Hello houstontx and Kurt! I am in Houston (77030) area too. I am guessing houstontx' service place is Land Sea and Sky - I have been there many times. I would be interested to know the used scope dealers in Houston though. I know many eBay'er buy scopes from auctions for about $9 a piece (usually a ...
by zzffnn
Sat Jul 18, 2015 4:59 am
Forum: For forum members who want to buy and sell equipment
Topic: Nikon 20x E Plan and AO 40x objectives for sale/trade
Replies: 4
Views: 2442

Nikon 20x E Plan and AO 40x objectives for sale/trade

Hi Everyone, Thank you for viewing my thread. I am new here but I post a lot more at photo macrography.net under the same user name. I used microscope professionally as a PhD microbiologist. I have three objectives for sale or trade: 1) Nikon 20x NA 0.40 160/0.17 E Plan objective - $129 (I bought it...