Search found 3086 matches

by rnabholz
Sat Dec 01, 2018 12:29 am
Forum: Pictures and Videos
Topic: Oamaru IV
Replies: 9
Views: 5102

Re: Oamaru IV

zzffnn wrote:Beautiful forms, thank you for sharing, Rob!
Thanks zz
by rnabholz
Fri Nov 30, 2018 2:18 pm
Forum: Pictures and Videos
Topic: Oamaru IV
Replies: 9
Views: 5102

Re: Oamaru IV

All great images! I think I like the first one the best. Same with me. The non-uniform ornamentation pattern of the diatoms in the 2nd and 3rd images is intriguing: are the tiny holes blocked? by a calcareous precipitate? Thanks Hobby. Regarding the tri-lobed diatom, which I believe to be Tricerati...
by rnabholz
Fri Nov 30, 2018 2:10 pm
Forum: Pictures and Videos
Topic: Oamaru IV
Replies: 9
Views: 5102

Re: Oamaru IV

75RR wrote:more really lovely images!

I see that they are numbered, is this part of a future ID project? Web page ... book?
Thank you 75.

The numbering is another go at organizing the images on my hard drive, no larger plan to clutter the world with my attempts at imaging.
by rnabholz
Fri Nov 30, 2018 2:43 am
Forum: Pictures and Videos
Topic: Oamaru IV
Replies: 9
Views: 5102

Re: Oamaru IV

All great images! I think I like the first one the best. I take it you did a lot of image editing to eliminate background clutter? I think it does help the viewer to concentrate on the image. Great to see another 4 series user, too. Thanks Rick. Yes, I should have mentioned that I cleaned things up...
by rnabholz
Fri Nov 30, 2018 1:53 am
Forum: Pictures and Videos
Topic: Oamaru IV
Replies: 9
Views: 5102

Oamaru IV

More from the Oamaru New Zealand fossil sample

AO Apostar 4, 90x Apo, Oblique Mask, Canon 70D, Stacked using Zerene Stacker PMax routine
89µm
89µm
Oamaru 0395 ZS PMax Final.jpg (58.39 KiB) Viewed 5102 times
79µm
79µm
Oamaru 0364 ZS PMax Final.jpg (61.38 KiB) Viewed 5102 times
81µm
81µm
Oamaru 0376 ZS PMax Final.jpg (73.41 KiB) Viewed 5102 times
by rnabholz
Fri Nov 30, 2018 1:07 am
Forum: Pictures and Videos
Topic: Amoeba (arcella?) 'walking'
Replies: 14
Views: 7101

Re: Amoeba (arcella?) 'walking'

Very cool.

Agree with 75 - great idea to speed it up.
by rnabholz
Fri Nov 30, 2018 1:03 am
Forum: Pictures and Videos
Topic: Pleurosigma + 2 Anisonema vitrea
Replies: 8
Views: 3502

Re: Pleurosigma + 2 Anisonema vitrea

Oh my...........

Words fail.

You are killing it 75.
by rnabholz
Fri Nov 30, 2018 1:02 am
Forum: Pictures and Videos
Topic: A Darkfield Stop and a Diatom Slide
Replies: 2
Views: 2124

Re: A Darkfield Stop and a Diatom Slide

Excellent - love to see this kind of experimentation.

I had good luck with stops with 10 and 20x objectives, at 40x it got to be a real trick getting the precise alignment and the stop size right.

Great job, keep posting your results.

Rod
by rnabholz
Wed Nov 28, 2018 3:20 am
Forum: Pictures and Videos
Topic: Oamaru III
Replies: 10
Views: 4924

Re: Oamaru III

MichaelG. wrote:
rnabholz wrote:Not 100% sure, but I believe it is a sponge spicule.
Thanks for that ^^^

Wikipedia endorses your belief:
https://en.m.wikipedia.org/wiki/File:De ... ersity.png
https://en.m.wikipedia.org/wiki/Sponge_spicule
MichaelG.
Well, there you go! Thanks Michael.
by rnabholz
Wed Nov 28, 2018 12:14 am
Forum: Pictures and Videos
Topic: Oamaru III
Replies: 10
Views: 4924

Re: Oamaru III

einman wrote:Very nice. Suitable for framing!
Thank you einman.
by rnabholz
Wed Nov 28, 2018 12:14 am
Forum: Pictures and Videos
Topic: Oamaru III
Replies: 10
Views: 4924

Re: Oamaru III

MichaelG. wrote:Please pardon my ignorance, but ... what is the first picture ?

It's quite an extraordinary shape.
[beautifully imaged]

MichaelG.
Hi Michael,

Not 100% sure, but I believe it is a sponge spicule.

Standing by for correction and illumination.
by rnabholz
Wed Nov 28, 2018 12:11 am
Forum: Pictures and Videos
Topic: Oamaru III
Replies: 10
Views: 4924

Re: Oamaru III

billbillt wrote:These photos are excellent...

BillT
Thank you Bill
by rnabholz
Tue Nov 27, 2018 3:48 pm
Forum: Pictures and Videos
Topic: Oamaru III
Replies: 10
Views: 4924

Re: Oamaru III

75RR wrote:Sharp detail and very smooth looking images. Very nice!
Thank you 75.
by rnabholz
Tue Nov 27, 2018 2:29 am
Forum: Pictures and Videos
Topic: Oamaru III
Replies: 10
Views: 4924

Oamaru III

More sights from a Oamaru New Zealand sample

AO 4 Apostar, 43 and 90x Apo Objectives, Oblique Mask, Canon 70D, Stacked using Zerene Stacker PMax routine.
43X  300µm
43X 300µm
Oamaru 0292 ZS PMax Final.jpg (44.11 KiB) Viewed 4924 times
90x  108µm
90x 108µm
Oamaru 0331 ZS PMax Final.jpg (78.59 KiB) Viewed 4924 times
90x  63µm
90x 63µm
Oamaru 0307 ZS PMax Final.jpg (62.61 KiB) Viewed 4924 times
by rnabholz
Fri Nov 23, 2018 11:08 pm
Forum: Pictures and Videos
Topic: Miscellaneous Photomicrographs
Replies: 13
Views: 6722

Re: Miscellaneous Photomicrographs

Outstanding images. Thanks very much for posting them for us.
by rnabholz
Fri Oct 26, 2018 2:36 am
Forum: Pictures and Videos
Topic: Oamaru II
Replies: 9
Views: 4537

Re: Oamaru II

KurtM wrote:If I were you, I'd hang lights on that last one and use it for a holiday decoration. 8-)
Might need a micromanipulator to put the star on top.
by rnabholz
Fri Oct 26, 2018 1:59 am
Forum: Introduce yourself
Topic: Hello from Toronto
Replies: 4
Views: 4202

Re: Hello from Toronto

KurtM wrote:
Aslan wrote:I am also an amateur astronomer and photographer so I guess I love all things optical.
That's a very similar resume to couple of us here. Welcome!
Yes there are a few kindred spirits hanging around these parts...

Welcome to the group.

Rod
by rnabholz
Fri Oct 26, 2018 1:57 am
Forum: Pictures and Videos
Topic: Cyanobacteria - Gloeotrichia
Replies: 17
Views: 9611

Re: Cyanobacteria - Gloeotrichia

Your commitment to go the extra mile shows through in the spectacular results. Just beautiful, well done

Rod
by rnabholz
Thu Oct 25, 2018 11:01 pm
Forum: Pictures and Videos
Topic: Oamaru II
Replies: 9
Views: 4537

Re: Oamaru II

Hi Bob, Glad you like them, there will be more to come. We are in agreement on your IDs. That spicule really grabbed my attention. I think it was about a 50 image stack to capture its depth. The second one is playing mind games with me, I see it as convex, look away and back and it is concave. Goofy...
by rnabholz
Thu Oct 25, 2018 6:41 pm
Forum: Pictures and Videos
Topic: Fossil BiValve:
Replies: 4
Views: 3302

Re: Fossil BiValve:

Beautiful fine details in that first one. Very cool, thanks for showing us.

Rod
by rnabholz
Thu Oct 25, 2018 1:49 pm
Forum: Pictures and Videos
Topic: Oamaru II
Replies: 9
Views: 4537

Re: Oamaru II

Very kind 75, thank you.
by rnabholz
Thu Oct 25, 2018 1:47 pm
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Re: Oamaru New Zealand Fossil Diatoms

Thank you 75
by rnabholz
Thu Oct 25, 2018 3:22 am
Forum: Pictures and Videos
Topic: Oamaru II
Replies: 9
Views: 4537

Re: Oamaru II

zzffnn wrote:Fascinating! Nice work, Rod!
Thanks zz
by rnabholz
Thu Oct 25, 2018 1:44 am
Forum: Pictures and Videos
Topic: Oamaru II
Replies: 9
Views: 4537

Oamaru II

More from Oamaru New Zealand Fossil sample.

American Optical Series 4 Apostar, 90x Apo, Oblique Mask, Canon 70D, Stacks using Zerene Stacker PMax Routine
Pyxilla 74µm
Pyxilla 74µm
Oamaru 0204 ZS PMax Finalx.jpg (62.67 KiB) Viewed 4537 times
70µm
70µm
Oamaru 0229 ZS PMax Finalx.jpg (79.03 KiB) Viewed 4537 times
62µm
62µm
Oamaru 0246 ZS PMax Finalx.jpg (64.43 KiB) Viewed 4537 times
by rnabholz
Thu Oct 25, 2018 12:42 am
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Re: Oamaru New Zealand Fossil Diatoms

Hi Rod, thank you for showing - these Oamaru diatoms often are especially beautiful. I once was lent a bottle of material to make some single diatom slides for a project. I was astonished to find mostly little broken diatoms and ended putting a knife tip full through a 50µ sieve to quickly collect ...
by rnabholz
Wed Oct 24, 2018 4:37 pm
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Re: Oamaru New Zealand Fossil Diatoms

What do you use to control the focusing while taking the images for stacking? Do you use a normal canon lens for photography or do you use a specialty adapter lens, such as this: https://www.amazon.com/OMAX-Microscope-Adapter-Canon-D-SLR/dp/B01D914LT2/ref=sr_1_3?ie=UTF8&qid=1539802448&sr=8-3&keywor...
by rnabholz
Wed Oct 24, 2018 2:56 pm
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Re: Oamaru New Zealand Fossil Diatoms

Thanks Hobby
by rnabholz
Wed Oct 24, 2018 3:23 am
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Re: Oamaru New Zealand Fossil Diatoms

That's no ordinary AO Series 4, my friend ... that is a Series 4 with the hottest glass AO ever made (I think, and would love to be corrected if mistaken), and with Rod at the controls. Lovely -- any secret source of extra cool sample material to brag about? Looking forward to more... Thanks buddy....
by rnabholz
Wed Oct 24, 2018 3:07 am
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Re: Oamaru New Zealand Fossil Diatoms

PeteM wrote:You've gotten fantastic images from your AO4. Thanks for posting.
Thank you Pete, she is a sweet rig.
by rnabholz
Wed Oct 24, 2018 12:39 am
Forum: Pictures and Videos
Topic: Oamaru New Zealand Fossil Diatoms
Replies: 15
Views: 6244

Oamaru New Zealand Fossil Diatoms

A couple of images from a sample of fossil diatoms from the Oamaru deposit in New Zealand. More to come as I explore the slides.

AO 4 Apostar, 90X Apo, Oblique Mask, Canon 70D, Stacks using Zerene Stacker PMax routine
84µm
84µm
Oamaru 0163 ZS PMax Final.jpg (87.75 KiB) Viewed 6244 times
Rhopalodia 91µm
Rhopalodia 91µm
Oamaru 0161 ZS PMax Final.jpg (105.29 KiB) Viewed 6244 times