Trachyneis aspera (another)

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75RR
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Trachyneis aspera (another)

#1 Post by 75RR » Sun Mar 22, 2020 7:46 pm

.
Planapo 63x/1.4, DIC, 100µm length, stacked in Photoshop, Marine sample, Alboran Sea.

Girdle view. Upper and Lower valve overlap can be distinguished.
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deBult
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Re: Trachyneis aspera (another)

#2 Post by deBult » Sun Mar 22, 2020 9:03 pm

Nice.

(To get to this quality level, I have to practice, practice and ehhh practice.)

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KD Arvidsson
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Re: Trachyneis aspera (another)

#3 Post by KD Arvidsson » Sun Mar 22, 2020 9:38 pm

Very beautiful 75RR😊 You are a very good micro-photographer! Thanks for sharing! //KD
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Re: Trachyneis aspera (another)

#4 Post by WhyMe » Sun Mar 22, 2020 9:43 pm

Very nice!

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Re: Trachyneis aspera (another)

#5 Post by Hobbyst46 » Sun Mar 22, 2020 9:53 pm

75RR wrote:
Sun Mar 22, 2020 7:46 pm
Girdle view. Upper and Lower valve overlap can be distinguished.
Fantastic image ! they are so nicely distinguishable !
Do you think that this type of overlap can be identified with phase contrast ? (of any diatom, not necessarily this one)

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Re: Trachyneis aspera (another)

#6 Post by hkv » Sun Mar 22, 2020 10:32 pm

Beautiful!
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75RR
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Re: Trachyneis aspera (another)

#7 Post by 75RR » Sun Mar 22, 2020 10:34 pm

.
Many thanks deBult, KD Arvidsson, WhyMe, Hobbyst46 and hkv. Very kind.
Hobbyst46 wrote:
Sun Mar 22, 2020 9:53 pm
Do you think that this type of overlap can be identified with phase contrast ? (of any diatom, not necessarily this one)
David Walker's article Diatom Pleurosigma angulatum - a versatile 'demonstration' subject. demonstrates the NA (Numerical Aperture) penalty that Phase levies.

I think you would therefore need a Phase objective with a very high NA to manage it.

Mind you, he also shows that using a Phase objective in Brightfield (and I imagine even more so with oblique) retains or at least pays a smaller NA penalty.

http://www.microscopy-uk.org.uk/mag/ind ... -test.html
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Re: Trachyneis aspera (another)

#8 Post by Seb28 » Mon Mar 23, 2020 12:21 am

Great image.
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sinabro
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Re: Trachyneis aspera (another)

#9 Post by sinabro » Mon Mar 23, 2020 2:13 am

Best quality. Beautiful ;)

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75RR
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Re: Trachyneis aspera (another)

#10 Post by 75RR » Mon Mar 23, 2020 6:46 am

Many thanks Seb28 and sinabro
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Re: Trachyneis aspera (another)

#11 Post by mintakax » Tue Mar 24, 2020 7:40 pm

Another beautiful shot Glen.

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75RR
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Re: Trachyneis aspera (another)

#12 Post by 75RR » Wed Mar 25, 2020 6:09 am

Many thanks mintakax
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Wes
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Re: Trachyneis aspera (another)

#13 Post by Wes » Wed Mar 25, 2020 1:43 pm

Amazing shot! You are diatom master of the Alboran Sea.
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75RR
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Re: Trachyneis aspera (another)

#14 Post by 75RR » Wed Mar 25, 2020 3:26 pm

Many thanks Wes

I am fortunate that the diatoms in the Alborán Sea are photogenic

Map for those who might not have heard of the Alborán Sea or can't place it.

Hornblower fans might recognize some of the landmarks.
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Sabatini
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Re: Trachyneis aspera (another)

#15 Post by Sabatini » Fri Mar 27, 2020 3:43 am

:shock: :shock: shock:

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Re: Trachyneis aspera (another)

#16 Post by 75RR » Fri Mar 27, 2020 9:06 am

Sabatini wrote:
Fri Mar 27, 2020 3:43 am
:shock: :shock: shock:
Hi Sabatini, not sure if you are referring to the Diatom or the fact that (to paraphrase a 'famous' american) I can see Morocco from my window!
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Re: Trachyneis aspera (another)

#17 Post by Sabatini » Sat Mar 28, 2020 2:58 am

Hello, sir.
Nice try.
I mean that beautiful diatom, it seems performs at the limits of optical resolution.

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75RR
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Re: Trachyneis aspera (another)

#18 Post by 75RR » Sat Mar 28, 2020 5:34 am

Many thanks Sabatini, glad you liked it!
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