Search found 116 matches

by btschumy
Thu May 11, 2017 4:38 pm
Forum: Pictures and Videos
Topic: Cladocera (Water Flea) with Egg
Replies: 10
Views: 2658

Re: Cladocera (Water Flea) with Egg

Man, that looks like thats got to hurt!

Nice images.
by btschumy
Wed May 10, 2017 12:09 am
Forum: Pictures and Videos
Topic: Zygnema undergoing division
Replies: 7
Views: 1275

Re: Zygnema undergoing division

Thanks guys.
by btschumy
Tue May 09, 2017 2:17 am
Forum: Introduce yourself
Topic: Newbie to it all :)
Replies: 34
Views: 7034

Re: Newbie to it all :)

Aenima,

Welcome. I'm another that does astronomy and microscopy. Good to have something to do on cloudy nights or during the day.

Bill
by btschumy
Mon May 08, 2017 11:59 am
Forum: Identification help
Topic: Live diatom needs ID
Replies: 8
Views: 2318

Re: Live diatom needs ID

Kurt, Thanks for chiming in. I'm so dumb that I didn't realize this was a girdle (edge on) view. Not clear to me how you ID something from this view. I would think it somewhat rare to find diatoms lying exactly edge on in a wet mount. I don't see a shoebox shape where the valves fit together in my i...
by btschumy
Sun May 07, 2017 9:01 pm
Forum: Identification help
Topic: Live diatom needs ID
Replies: 8
Views: 2318

Re: Live diatom needs ID

It does look the same as his. Whatever it is, they are almost surely the same thing. Thanks for the link.
by btschumy
Sun May 07, 2017 7:23 pm
Forum: Identification help
Topic: Live diatom needs ID
Replies: 8
Views: 2318

Live diatom needs ID

Can anyone help ID this diatom? The closest I can come up with is Sellaphora, but most diatom keys seem mainly for cleaned specimens, not living.
Diatom4.jpg
Diatom4.jpg (198.66 KiB) Viewed 2318 times
by btschumy
Sun May 07, 2017 2:54 pm
Forum: Pictures and Videos
Topic: Zygnema undergoing division
Replies: 7
Views: 1275

Zygnema undergoing division

A new algae I've found recently. This is (I believe) Zygnema sp. undergoing cell division. You can see the elongated cell wall of the central cell. I'm not sure what is going on between the two stellate chloroplasts but I assume it is some stage of mitosis. Afocal image at 250x. The filament is abou...
by btschumy
Sun May 07, 2017 1:08 pm
Forum: Identification help
Topic: Two new testate amoebae
Replies: 0
Views: 1225

Two new testate amoebae

Yesterday I stumbled upon two testate amoebae that I haven't encountered before. They were found in some decomposed algae I collected last weekend. The first is, I believe Paulinella sp. The organism is 25 µ long. Image was taken afocal through 40x achromatic objective, 10x eyepiece. Testate_Amoeba_...
by btschumy
Mon Apr 17, 2017 4:34 am
Forum: Identification help
Topic: Two ids needed
Replies: 4
Views: 1498

Re: Two ids needed

The germinating zoospore is a good guess. Doing an image search for those didn't find anything quite like what I see, but I did find some that looked like this, which is perhaps a slightly different stage of germination. Algae1.jpg In the second image of the two "eyes", each eye is about 60 microns ...
by btschumy
Sat Apr 15, 2017 4:10 am
Forum: Identification help
Topic: Two ids needed
Replies: 4
Views: 1498

Two ids needed

I found these non-motile algae in my pond aquarium. Looking through my freshwater algae guide I'm unable to place it. Any ideas? This is a stack of 6 taken through a 40x objective. Unknown_Algae3_Stack_5.jpg This two things sort of look like amoeba tests. Stack of 13 though 25x objective. Two_Tests_...
by btschumy
Wed Mar 29, 2017 3:36 am
Forum: Pictures and Videos
Topic: Diatom encrusted algae
Replies: 8
Views: 1554

Re: Diatom encrusted algae

Kurt,

Thanks for the Cocconeis ID. I had just assumed those were part of the plant, not realizing they were another diatom species.

I'll try another image zoomed in a bit in a day or so.

Bill
by btschumy
Tue Mar 28, 2017 4:26 am
Forum: Pictures and Videos
Topic: Testate Amoeba
Replies: 10
Views: 2176

Re: Testate Amoeba

After further examination, I think actinophrys is correct that there are two different species of testate amoeba in my tank. The first picture with no visible spines is different from the other with spines (which I think is Centropyxis). I got another nice image of the latter.
by btschumy
Tue Mar 28, 2017 4:20 am
Forum: Pictures and Videos
Topic: Diatom encrusted algae
Replies: 8
Views: 1554

Diatom encrusted algae

This is a stack of 20 images taken though a 10x achromatic objective. I believe the filamentous algae is some species of Rhizoclonium. There is also a strand of Spirogyra in the field. The Spirogyra was considerably below the plane of the Rhizoclonium and I'm impressed how the stacking brought it al...
by btschumy
Mon Mar 27, 2017 9:09 pm
Forum: Pictures and Videos
Topic: Tardigrade SEM photo
Replies: 7
Views: 1394

Re: Tardigrade SEM photo

That just doesn't look real, does it?
by btschumy
Wed Mar 22, 2017 8:42 pm
Forum: Pictures and Videos
Topic: Testate Amoeba
Replies: 10
Views: 2176

Re: Testate Amoeba

Pretty sure it is the same on as what I saw with spines. Here is one where a spine is visible.
by btschumy
Sun Mar 19, 2017 3:15 pm
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6301

Re: camera -> microscope connection

I think the first question is how do things look visually through the scope? Is the illumination good there? Are you able to focus properly? If that is not right we need to deal with that first.
by btschumy
Sun Mar 19, 2017 2:14 am
Forum: Beginner's corner
Topic: camera -> microscope connection
Replies: 27
Views: 6301

Re: camera -> microscope connection

Could you post a link to adapter you bought? The one I found by Amscope was around $89 and had some optics in it. My guess is it is not the adapter. I started with simple direct projection from the objective into the sensor. I got reasonably good images that way. More likely you don't have you light...
by btschumy
Sun Mar 19, 2017 12:41 am
Forum: Pictures and Videos
Topic: Testate Amoeba
Replies: 10
Views: 2176

Testate Amoeba

This past week my pond aquarium has exploded with testate amoebae. They have multiple spikes emanating from the test leading me to think this might be Centropyxis (although the one in the picture doesn't have spikes visible. There were several pseudopods sticking out. This image shows many more due ...
by btschumy
Sun Mar 19, 2017 12:31 am
Forum: Identification help
Topic: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)
Replies: 13
Views: 2792

Re: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)

Got around to looking at my bryozoans today. It looks like the colony has died. Perhaps that is why they were producing so many statoblasts. My macro set up is not really macro and is much more primitive than Kurt's. This is what the colony looked like on the side of the aquarium. The dark spots are...
by btschumy
Fri Mar 17, 2017 3:33 am
Forum: Identification help
Topic: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)
Replies: 13
Views: 2792

Re: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)

Rename done.

So are all your pictures taken using a macro lens from outside the tank? Well done!
by btschumy
Thu Mar 16, 2017 2:23 pm
Forum: Identification help
Topic: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)
Replies: 13
Views: 2792

Re: Unknown reddish-brown thing

Just noticed that on the backside of my aquarium, I have something growing that looks just like Kurt's image. I even see little dark specs along the tube that must be the statoblasts. So I guess I have an active colony growing. I will try to sample some of it and get a picture or two this weekend. B...
by btschumy
Thu Mar 16, 2017 1:10 pm
Forum: Identification help
Topic: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)
Replies: 13
Views: 2792

Re: Unknown reddish-brown thing

Very cool. Thanks for the ID guys. I had not heard of these before but will watch for the adult bryozoans.
by btschumy
Thu Mar 16, 2017 3:15 am
Forum: Identification help
Topic: Unknown reddish-brown thing (It's a Bryozoan statoblast!!)
Replies: 13
Views: 2792

Unknown reddish-brown thing (It's a Bryozoan statoblast!!)

I ran across this last night in my "pond" aquarium. Anyone have a guess as to what it is? It is about 600 microns in length.

Sorry for the poor image. It was very dark and opaque. I had to significantly overexpose to see anything at all.
by btschumy
Thu Mar 02, 2017 3:47 pm
Forum: Camera systems and imaging
Topic: USB camera vs DSLR
Replies: 12
Views: 5229

Re: USB camera vs DSLR

I went with the 700D. It seems to be working well for me.
by btschumy
Thu Feb 23, 2017 10:46 pm
Forum: Camera systems and imaging
Topic: How do you keep track of image metadata?
Replies: 12
Views: 3500

Re: How do you keep track of image metadata?

One nice thing about having the data embedded in the image is that if you rename the image, you can still find the data.
by btschumy
Thu Feb 23, 2017 1:07 am
Forum: Camera systems and imaging
Topic: How do you keep track of image metadata?
Replies: 12
Views: 3500

Re: How do you keep track of image metadata?

I use a canon 650D. Yeah, the black frame is not a bad idea for marking changes in settings. I am thinking of writing a program that monitors a directory. When a new image file appears (downloaded by your tethering app) it will automatically popup a UI to edit the EXIF data by adding notes. If it de...
by btschumy
Mon Feb 20, 2017 1:19 pm
Forum: Pictures and Videos
Topic: Moss spores and iodine crystals 100x
Replies: 7
Views: 1328

Re: Moss spores and iodine crystals 100x

Arcella does look like a strong possibility. Thanks.
by btschumy
Mon Feb 20, 2017 3:06 am
Forum: Pictures and Videos
Topic: Moss spores and iodine crystals 100x
Replies: 7
Views: 1328

Re: Moss spores and iodine crystals 100x

I guess the color on your spores was from the stain. Mine are naturally that color. They just seems so similar I figured they were similar things.
by btschumy
Mon Feb 20, 2017 1:27 am
Forum: Pictures and Videos
Topic: Moss spores and iodine crystals 100x
Replies: 7
Views: 1328

Re: Moss spores and iodine crystals 100x

What a coincidence. Just today I ran into something that looks remarkably similar and had no idea what it was. This orange object is about 60 µ in diameter. Could it be a moss spore as well? Ive seen a number of these roundish and orangish things in my "pond" aquarium the past week or so. However al...
by btschumy
Mon Feb 20, 2017 12:44 am
Forum: Camera systems and imaging
Topic: How do you keep track of image metadata?
Replies: 12
Views: 3500

Re: How do you keep track of image metadata?

Thanks for all the ideas. I guess no one has found a really good way of dealing with the problem. An ideal method would be to store it in the EXIF data, or possibly in a .xmp file of the same name. I use a tethering app called Kuuvik Capture and I've written the author to see if he could add the abi...