Oamaru New Zealand Fossil Diatoms
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
AO 4 Apostar, 90X Apo, Oblique Mask, Canon 70D, Stacks using Zerene Stacker PMax routine
Re: Oamaru New Zealand Fossil Diatoms
You've gotten fantastic images from your AO4. Thanks for posting.
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...
Lovely -- any secret source of extra cool sample material to brag about? Looking forward to more...
Cheers,
Kurt Maurer
League City, Texas
email: ngc704(at)gmail(dot)com
https://www.flickr.com/photos/67904872@ ... 912223623/
Kurt Maurer
League City, Texas
email: ngc704(at)gmail(dot)com
https://www.flickr.com/photos/67904872@ ... 912223623/
Re: Oamaru New Zealand Fossil Diatoms
Thank you Pete, she is a sweet rig.PeteM wrote:You've gotten fantastic images from your AO4. Thanks for posting.
Re: Oamaru New Zealand Fossil Diatoms
Thanks buddy.KurtM wrote: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...
The AO apochromats on my scope are the most modern version they made in the 160mm tube length. That said, they are from the 1950s, so not exactly cutting edge compared to today's offerings from the top manufacturers. ;^)
They do perform really well though, and I am thrilled to have them.
AO did make 10x and 40x Apochromat infinity objectives that came along later, but not many, and not for long. They pop up on Ebay from time to time.
I was gifted the Oamuru sample by a very fine fellow to which I owe some slides. Lots and lots of centrics, some interesting and intriguing shrapnel that makes me anxious to review all the slides to see if I can find an intact version.
You will see them here if i do.
Last edited by rnabholz on Wed Oct 24, 2018 10:51 am, edited 1 time in total.
Re: Oamaru New Zealand Fossil Diatoms
Great pictures. Thanks.
Re: Oamaru New Zealand Fossil Diatoms
Thanks Hobby
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- ... pe+adapter
I want to start getting into stacking, and I use that omax adapter. It loses all the distance information though (I think).
mnmyco
https://www.amazon.com/OMAX-Microscope- ... pe+adapter
I want to start getting into stacking, and I use that omax adapter. It loses all the distance information though (I think).
mnmyco
Re: Oamaru New Zealand Fossil Diatoms
Not sure what you mean by "control"? The camera is set to manual focus, and I use the microscope's focus knob.mnmyco wrote: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- ... pe+adapter
I want to start getting into stacking, and I use that omax adapter. It loses all the distance information though (I think).
mnmyco
If you mean how do I monitor it, I use an external screen and use the index scale on the focus knob to increment the steps.
As to the adapter, mine is a bit of a special case, as the apochromat objectives on my scope require a compensating eyepiece to produce the correct image, so i rigged up a home built adapter. You can read about it here :
viewtopic.php?f=6&t=4613&p=42154&hilit= ... ice#p42154
Thanks for the interest
Rod
Re: Oamaru New Zealand Fossil Diatoms
Ah, I see. I was curious if you had one of the special rigs that move the camera a known distance. I have yet to try just putting my camera in the port and turning the fine focus for stacking. Good to know that you can do that and get quality images.
mnmyco
mnmyco
Re: Oamaru New Zealand Fossil Diatoms
Those rigs are used more for close-up and macro work [where the increments are generally in the tenths of a millimetre range] ... for compound-microscopy you will be moving by microns.mnmyco wrote:Ah, I see. I was curious if you had one of the special rigs that move the camera a known distance. ...
MichaelG.
Too many 'projects'
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 the bigger diatoms I was looking for. Is this th esome with your material: Lots of very promising shards and rarely an intact frustule?
The first one will be a Trinacria simulacrum according to Bibliotheca Diatomologica, Band 19.
Bob
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 the bigger diatoms I was looking for. Is this th esome with your material: Lots of very promising shards and rarely an intact frustule?
The first one will be a Trinacria simulacrum according to Bibliotheca Diatomologica, Band 19.
Bob
Re: Oamaru New Zealand Fossil Diatoms
The first form is really cool. Thank you for sharing, Rod.
Re: Oamaru New Zealand Fossil Diatoms
Thanks for the interest and especially the ID.MicroBob wrote: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 the bigger diatoms I was looking for. Is this th esome with your material: Lots of very promising shards and rarely an intact frustule?
The first one will be a Trinacria simulacrum according to Bibliotheca Diatomologica, Band 19.
Bob
My sample seems to have a great number of centrics that came through very well, but the other forms are not as well preserved. I do find in general that fossil samples do take a beating compared to "fresh", but they sure are interesting and a nice change of pace.
I will endeavor to bring the best stuff I can find here, so keep watching.
Rod
Re: Oamaru New Zealand Fossil Diatoms
Beautiful diatoms beautifully photographed
Zeiss Standard WL (somewhat fashion challenged) & Wild M8
Olympus E-P2 (Micro Four Thirds Camera)
Olympus E-P2 (Micro Four Thirds Camera)
Re: Oamaru New Zealand Fossil Diatoms
Thank you 75