Chaetogaster Stem to Stern

rnabholz · Post by **rnabholz** » Thu Feb 18, 2016 1:14 pm

A short video featuring a close study of a chaetogaster from end to end in darkfield.

AO One Ten 10X Plan Achro Objective, Darkfield Mask, Afocal using a Nexus 6 Phone.

https://youtu.be/zp7J9lfPBB0

Second video using 20x objective

https://youtu.be/MAjk9-NfKlI

carlos.uruguay · Post by **carlos.uruguay** » Thu Feb 18, 2016 1:25 pm

Excellent. Maybe not Chaetogaster

rnabholz · Post by **rnabholz** » Thu Feb 18, 2016 3:57 pm

carlos.uruguay wrote:Excellent. Maybe not Chaetogaster

Thank you.

Please let me know if you have an alternate ID, I am always happy to be corrected if I am wrong.

carlos.uruguay · Post by **carlos.uruguay** » Thu Feb 18, 2016 4:44 pm

rnabholz wrote: Please let me know if you have an alternate ID, I am always happy to be corrected if I am wrong.

I do not know, maybe I'm wrong.
I've always seen drops of orange oil in Chaetogaster.
Perhaps some specie not have it.
Maybe some forum member can confirm the genre

Tom Jones · Post by **Tom Jones** » Fri Feb 19, 2016 9:09 am

Rod,

Nice video! How do you support your cell phone over the eyepiece? Was that recorded in HD or 4K?

Tom

actinophrys · Post by **actinophrys** » Fri Feb 19, 2016 10:01 am

carlos.uruguay wrote:I've always seen drops of orange oil in Chaetogaster.
Perhaps some specie not have it.
Maybe some forum member can confirm the genre.

I think Chaetogaster is right, based on the shape of the ventral setae and lack of dorsal setae. For the oil droplets are you perhaps thinking of Aeolosoma, where they are typical? Because I can't recall ever having seen orange droplets in a Chaetogaster, even including some of your videos.

carlos.uruguay · Post by **carlos.uruguay** » Fri Feb 19, 2016 10:42 am

actinophrys wrote:
carlos.uruguay wrote:I've always seen drops of orange oil in Chaetogaster.
Perhaps some specie not have it.
Maybe some forum member can confirm the genre.
I think Chaetogaster is right, based on the shape of the ventral setae and lack of dorsal setae. For the oil droplets are you perhaps thinking of Aeolosoma, where they are typical? Because I can't recall ever having seen orange droplets in a Chaetogaster, even including some of your videos.

Yes yes !!!! that is !!! Thanks Joshua!!!
I mistook with Aelosoma !!
Sorry Rod and all!!!

rnabholz · Post by **rnabholz** » Fri Feb 19, 2016 3:22 pm

Tom Jones wrote:Rod,

Nice video! How do you support your cell phone over the eyepiece? Was that recorded in HD or 4K?

Tom

Thanks Tom.

It was done in HD 720. A little easier on storage but still very presentable.

The phone was aligned and held in place by these devices

A digiscoping adapter like this one:

http://www.amazon.com/gp/aw/d/B012J47N4 ... ref=plSrch

Combined with a cellphone to tripod adapter like this one:

http://www.amazon.com/gp/aw/d/B00XAQV2S ... ref=plSrch
_________________

Rod

rnabholz · Post by **rnabholz** » Fri Feb 19, 2016 3:25 pm

actinophrys wrote:
carlos.uruguay wrote:I've always seen drops of orange oil in Chaetogaster.
Perhaps some specie not have it.
Maybe some forum member can confirm the genre.
I think Chaetogaster is right, based on the shape of the ventral setae and lack of dorsal setae. For the oil droplets are you perhaps thinking of Aeolosoma, where they are typical? Because I can't recall ever having seen orange droplets in a Chaetogaster, even including some of your videos.

Thanks Actino, I was fully prepared to be wrong, but relieved to be right for a change.

Thanks for jumping in.

Carlos, no worries!

Rod

Tom Jones · Post by **Tom Jones** » Sun Feb 21, 2016 8:00 am

Thanks Rod. I have been working with one of these: http://www.scientificdevice.com/microscopeplatform/ Outside the US Trajan sells them: http://www.trajanscimed.com/pages/miplatform The Trajan link shows the new version.

This one isn't limited, as far as I can tell, by eyepiece size. I've used it successfully on AO and Swift student scopes, a vintage 1951 Leitz I have, and even the big Olympus BX eyepieces, so it's convenient if you want to be able to use it on different microscopes.

The nice thing about this method is it's pretty easy to make a support of some kind, too, if funds are limited.

What amazes me is the quality of images you can get with a good cell phone camera that almost everyone carries around now. I gave a workshop last week for the Microscopical Society of Southern California on cell phone still and video photomicrography. Everyone was pretty impressed at how well the Samsung S5 cell phone images and video compared with a Canon 5DII, and a Tucsen TrueChrome II dedicated microscope camera.

Tom

rnabholz · Post by **rnabholz** » Mon Feb 22, 2016 7:28 am

That looks like a very nice mount.

I too am very impressed with the phone's capabilities. Very hard to beat a live view 6 inch HD screen, right at eye level. The Nexus 6 that I use supports video resolutions to 4k and has 13mp camera with HDR.

After the shoot, I can dump the files via wifi to a network drive, never have to deal with memory cards or USB cables.

I tried the dedicated microscope camera, was not impressed, and returned it.

My experiments with DSLRs so far don't measure up to the quality I get with the phone. I really admit that may lie with me, but I do wonder if fighting a learning curve is worth the time and energy as I am getting very satisfying results with the phone.

I am certainly an advocate.

Thanks for the interest.

Rod