Search found 1120 matches

by Ichthyophthirius
Tue Sep 03, 2013 1:06 pm
Forum: Equipment Exchange
Topic: [Found]
Replies: 0
Views: 716

[Found]

Found
by Ichthyophthirius
Thu Aug 01, 2013 5:44 am
Forum: Photography Through the Microscope
Topic: Bosmina longirostris
Replies: 7
Views: 2758

Do you know what DIC version it is (MPI-2, 3, 5)?
by Ichthyophthirius
Thu Aug 01, 2013 4:39 am
Forum: Photography Through the Microscope
Topic: Bosmina longirostris
Replies: 7
Views: 2758

Hi Jacek,

May I ask what DIC system (and microscope) you're using? The images look great!
by Ichthyophthirius
Tue Jul 30, 2013 12:45 pm
Forum: Photography Through the Microscope
Topic: Maximum Resolution
Replies: 11
Views: 3292

If you really want to significantly increase your optical scope's resolution, you're better off finding a confocal scope which has improved axial and lateral resolution compared to a conventional setup. I think this wouldn't be of much help. The diatoms don't fluoresce. The system would only achiev...
by Ichthyophthirius
Sat Jul 27, 2013 5:23 am
Forum: Photography Through the Microscope
Topic: Maximum Resolution
Replies: 11
Views: 3292

Hi, The 100x/1.40 will give you higher resolution if used correctly (very thin layer of mounting resin); the APS-C sensor is not limiting (you'd need less than 3MP for that). For maximum resolution you will have to abandon the DIC system. For the very finest details, DIC gives you less resolution th...
by Ichthyophthirius
Thu Jul 25, 2013 3:59 am
Forum: Photography Through the Microscope
Topic: Midge head?
Replies: 5
Views: 1179

Hi, This looks like the head of a damselfly larva. You'd need to show us the whole animal to make certain. It's a nice image. One suggestion: You can anaesthetise gill-breathing aquatic insect larvae easily by placing them in sparkling water. The CO 2 in the water knocks them out. Then put them back...
by Ichthyophthirius
Wed Jul 10, 2013 9:47 am
Forum: Photography Through the Microscope
Topic: I did not realize how badly infested my bushes are.
Replies: 2
Views: 951

Hi,

These are scale insects (related to aphids) http://en.wikipedia.org/wiki/Scale_insect . The white material is wax produced by them.

Because they are flat, they make great slide preparations: http://www.padil.gov.au/pests-and-disea ... 1645/36377
by Ichthyophthirius
Sun Jul 07, 2013 4:50 am
Forum: Equipment Discussions
Topic: coverslip test - cheap vs precise one
Replies: 2
Views: 950

Hi,

That's interesting. Maybe it would be informative if you repeated the test with an object that can be 100% reproduced and is flat (for example, a grid or a stage micrometer).

Also, are the two coverslips supposed to be of the same specification (No. 1.5)?
by Ichthyophthirius
Thu Jun 20, 2013 3:58 am
Forum: Equipment Discussions
Topic: Nikon Optiphot - Phototube - How to please?
Replies: 11
Views: 4543

Hi John, Hi Pau, That's a good point. The old manual lenses will give a more stable adaptation and are easier to focus. An older 50 mm has performed well in a test that you can see here: http://www.mikroskopie-forum.de/index.php?topic=15498.new (go down to the last picture for the summary). As the N...
by Ichthyophthirius
Wed Jun 19, 2013 11:32 am
Forum: Equipment Discussions
Topic: Nikon Optiphot - Phototube - How to please?
Replies: 11
Views: 4543

So if I have 50mm Prime on the 650D with a 49mm Filter Thread can I get from the M42 Male on the Adapter (M42 assumed) to the 49mm Filter thread on the lens? Hi John, That's right; you need a 49 to x mm step down ring to connect the 50mm prime lens to the "tube mount" of the Ebay adapter (not sure ...
by Ichthyophthirius
Wed Jun 19, 2013 5:53 am
Forum: Equipment Discussions
Topic: Nikon Optiphot - Phototube - How to please?
Replies: 11
Views: 4543

Hi, The eyepice slot in the chimney is 23 mm in diameter? When you insert a Nikon CF photoeyepiece into the photoport chimney, how far does it reach over the top of the chimney? Two options come to mind: 1) Direct projection using a CF PL 2.5x photoeyepiece. For that you have to build an adapter tha...
by Ichthyophthirius
Mon Jun 17, 2013 5:38 pm
Forum: Equipment Discussions
Topic: Carl Zeiss Jena planachromat 25x 0.5 information
Replies: 2
Views: 2169

Hi, This was part of an e lectro ly tic po lishing and etching device ( Elypo vist), an electrolytic cell with observation microscope. You can see it here, page 36/37: http://www.mikroskop-online.de/Mikroskop%20BDA/30-035d-1%20%20Mikroskope%20fuer%20Wissenschaft%20und%20Technik.pdf M19 was the norma...
by Ichthyophthirius
Sat Jun 01, 2013 5:28 am
Forum: Photography Through the Microscope
Topic: is this an Amphipode ?
Replies: 2
Views: 676

Just by looking at it (without using a key) I would think this is an isopod rather than an amphipod.
by Ichthyophthirius
Fri May 31, 2013 4:41 am
Forum: Photography Through the Microscope
Topic: Insect pupa
Replies: 2
Views: 822

You're right; this should be a mosquito pupa. Note the two "horns" which are used for breething air from the water's surface! Nice pictures!
by Ichthyophthirius
Thu May 16, 2013 7:04 am
Forum: Photography Through the Microscope
Topic: Red Bugs
Replies: 5
Views: 1682

@Baley Proper identification of mites is a very difficult task. The identification requires mounted adult specimen (cleared and prepared on a slide), usually a series. The identification of mite larvae (nymphs) is often impossible. You need the prepared slides to see microscopic details, such as hai...