Search found 7593 matches

by 75RR
Mon Jul 20, 2015 2:29 am
Forum: Pictures and Videos
Topic: Trichome + Algae
Replies: 7
Views: 1185

Re: Trichome + Algae

Many thanks JimT, vasselle, gekko, mrsonchus, billbillt and Rodney,
by 75RR
Sun Jul 19, 2015 10:36 pm
Forum: Microscopes and optics
Topic: My light cone does not appear to be centered
Replies: 42
Views: 7885

Re: My light cone does not appear to be centered

I sense putting something onto my light source, yes, and trying to make it fit the size of it exactly. I think the idea is to place something on your light source (to substitute for a Field Iris) that would help you centre the Condenser. If you make it the exact size of the light source housing it ...
by 75RR
Sun Jul 19, 2015 10:05 pm
Forum: Pictures and Videos
Topic: Centropyxis
Replies: 3
Views: 761

Centropyxis

25x*1.25, 115µm, Oblique, 12 image stack in Photoshop

Image
by 75RR
Sun Jul 19, 2015 8:41 pm
Forum: Pictures and Videos
Topic: Cosmarium
Replies: 4
Views: 799

Re: Cosmarium

Nice image, nice find! Never seen one like that either!
by 75RR
Sun Jul 19, 2015 8:14 pm
Forum: Pictures and Videos
Topic: Cyanobacteria and friend
Replies: 5
Views: 933

Cyanobacteria and friend

25x*1.25, 15µm (cyanobacteria), Oblique, 7 image stack in Photoshop

Image
by 75RR
Sun Jul 19, 2015 6:54 pm
Forum: Pictures and Videos
Topic: Trichome + Algae
Replies: 7
Views: 1185

Trichome + Algae

10x, 15µm alga width, Brightfield, 12 image stack in Photoshop

Image
by 75RR
Sun Jul 19, 2015 1:20 pm
Forum: Pictures and Videos
Topic: Mniobia sp. ?
Replies: 2
Views: 723

Re: Mniobia sp. ?

Charles wrote:Very nice video Glen! Looks like it's hungry.
Thanks. Had provisionally named it Plump Rotifer until I came up with a tentative ID :)
by 75RR
Sun Jul 19, 2015 1:04 pm
Forum: Pictures and Videos
Topic: Mniobia sp. ?
Replies: 2
Views: 723

Mniobia sp. ?

Tentative ID: Rotifera-Bdelloida-Philodinidae-Mniobia sp. It appears to be enveloped by an accordion like transparent sheath which I have not seen/noticed before. Two alga are 15µm and 20µm respectively (It is very hard to measure Rotifers that do not have a shell) http://www.plingfactory.de/Science...
by 75RR
Sun Jul 19, 2015 12:24 am
Forum: Pictures and Videos
Topic: Scuticociliates
Replies: 8
Views: 1716

Re: Scuticociliates

Very good photograph! Works very well in BW.
Especially like how two are still and one is racing away, gives it a great dynamic.
... from bird's bath water
Shouldn't that be squirrel? ;)
by 75RR
Sat Jul 18, 2015 10:48 pm
Forum: Pictures and Videos
Topic: Algae
Replies: 7
Views: 1366

Re: Algae

Many thanks Crater Eddie and gekko

Could well be Oedogonium sp.
Still have the slide on standby (in a plastic slide mailer) so will attempt to see if I can spot the rings tomorrow.

http://algalweb.net/oedogon.htm
by 75RR
Sat Jul 18, 2015 9:52 pm
Forum: Pictures and Videos
Topic: Algae
Replies: 7
Views: 1366

Algae

25x and 25x*1.6, 15µm and 20µm, Oblique, 10 and 9 image stacks in Photoshop

Image
Image
by 75RR
Sat Jul 18, 2015 8:06 pm
Forum: Identification help
Topic: rotifer ID
Replies: 2
Views: 1694

rotifer ID

Took a video of this rotifer and wanted to put a name to it before uploading it. These are screen shots. It appears to be enveloped by an accordion like transparent sheath which I have not seen/noticed before. Tentative ID: Rotifera-Bdelloida-Philodinidae-Mniobia sp. Two alga are 15µm and 20µm respe...
by 75RR
Sat Jul 18, 2015 4:53 pm
Forum: Pictures and Videos
Topic: Alga in LED
Replies: 15
Views: 2282

Re: Alga in LED

Thanks gekko, JimT and Charles. Had not received notification of your posts. (Site might have cancelled notification if I was onsite - despite being on another thread) gekko - that might serve as an "extra " protection. JimT - might try auto white balance Charles - thanks, though I feel subject matt...
by 75RR
Sat Jul 18, 2015 12:43 am
Forum: Microscopes and optics
Topic: My light cone does not appear to be centered
Replies: 42
Views: 7885

Re: My light cone does not appear to be centered

This is just a general comment on making adjustments and or removing a part should that ever be necessary.
Always try to find a way to mark the present position so that you can return the piece precisely to where it was.
Realigning misaligned parts, especially if there is more than one can be a pain.
by 75RR
Fri Jul 17, 2015 10:56 pm
Forum: Microscopes and optics
Topic: Lux Meter readings of a LED conversion
Replies: 8
Views: 2706

Lux Meter readings of a LED conversion

This has taken a little while. Original idea/encouragement from Ichthyophthirius See: http://www.photomacrography.net/forum/viewtopic.php?t=25202&postdays=0&postorder=asc&start=15 Subsequent help/hand holding from Crater Eddie See : http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=12&t=...
by 75RR
Fri Jul 17, 2015 9:15 pm
Forum: Microscopes and optics
Topic: My light cone does not appear to be centered
Replies: 42
Views: 7885

Re: My light cone does not appear to be centered

Mine are large knurled screws, I use them every time I change objectives if they are not exactly centered. They are not on the condenser but on the base that the condenser sits on. see photo. To center: I close down the field iris to center roughly, then open the iris until it is just on the edge of...
by 75RR
Fri Jul 17, 2015 6:04 pm
Forum: Microscopes and optics
Topic: My light cone does not appear to be centered
Replies: 42
Views: 7885

Re: My light cone does not appear to be centered

Have you checked if there are any centering screws at the back of the condenser?
If there are they could be at 10 and 2 o'clock.
by 75RR
Fri Jul 17, 2015 5:02 pm
Forum: Microscopes and optics
Topic: Lux meter + Kodak cameras and even a Toupcam
Replies: 35
Views: 6911

Re: Lux meter + Kodak cameras and even a Toupcam

200000 Lux Wow!
Mine does 3000 Lux Congratulations.
Any particular reason why you chose ebay over Amazon?
by 75RR
Fri Jul 17, 2015 10:23 am
Forum: Camera systems and imaging
Topic: Omax Camera with MTV-3 or Olympus Trinocular
Replies: 7
Views: 3836

Re: Omax Camera with MTV-3 or Olympus Trinocular

Wondering if it might be the USB connection. Which USB does your computer have?
by 75RR
Fri Jul 17, 2015 12:08 am
Forum: Pictures and Videos
Topic: Cosmerium
Replies: 5
Views: 1088

Re: Cosmerium

That is an excellent image of a difficult subject to photograph.
by 75RR
Thu Jul 16, 2015 11:00 pm
Forum: Pictures and Videos
Topic: More pictures from the high ph pond.
Replies: 7
Views: 1317

Re: More pictures from the high ph pond.

Amazing detail on this great set. First image is mesmerizing.
by 75RR
Thu Jul 16, 2015 9:50 pm
Forum: Pictures and Videos
Topic: Diatomée
Replies: 3
Views: 874

Re: Diatomée

That is an excellent image of a diatom.
by 75RR
Thu Jul 16, 2015 7:44 pm
Forum: Microscopes and optics
Topic: Lux meter + Kodak cameras and even a Toupcam
Replies: 35
Views: 6911

Re: Lux meter + Kodak cameras and even a Toupcam

I posted it because someone may have a need for it... No other reason... No problem. It is just that if you go to the formula page posted above and enter a figure for the Lux - Lumen conversion it simply appends lumen/square meter to whatever number you enter. Effectively restating the definition o...
by 75RR
Thu Jul 16, 2015 5:39 pm
Forum: Pictures and Videos
Topic: Aquatic alphabet
Replies: 5
Views: 1003

Re: Aquatic alphabet

"They are from a small very high ph pond that forms in a bottom land on a local cemetary. The pond subsequently drains via a little creek, into Lake Ontario." ... and then into the drinking supply. Would rather end up with that nice Diatom in my glass than the Nematode, less protein but nicer, much...
by 75RR
Thu Jul 16, 2015 5:18 pm
Forum: Microscopes and optics
Topic: Lux meter + Kodak cameras and even a Toupcam
Replies: 35
Views: 6911

Re: Lux meter + Kodak cameras and even a Toupcam

Here is a photographic analogy that might help those who are keen on a formula. Take a well exposed photograph of a person outside. Now go indoors and take another photograph of that person with the same camera settings, adjusting the studio lights until the exposure is correct. Both photographs wil...
by 75RR
Thu Jul 16, 2015 2:33 pm
Forum: Microscopes and optics
Topic: Lux meter + Kodak cameras and even a Toupcam
Replies: 35
Views: 6911

Re: Lux meter + Kodak cameras and even a Toupcam

That is an interesting/usefull attachment - news to me.

This is the link to the manual: http://www.marquis-kyle.com.au/Lunasix3.pdf

Do not think there is a formula for lux to lumen conversion.
by 75RR
Thu Jul 16, 2015 12:51 pm
Forum: Pictures and Videos
Topic: Alga in LED
Replies: 15
Views: 2282

Re: Alga in LED

I lay mine on top of the field lens (it is much larger the the field lens so it covers it). That is where mine is and it also covers it. Makes it difficult to adjust the field iris, so I have to take it off, peer into the eyepiece without the UV filter in place and then remember to put it back on. ...
by 75RR
Thu Jul 16, 2015 12:21 pm
Forum: Pictures and Videos
Topic: Alga in LED
Replies: 15
Views: 2282

Re: Alga in LED

Can you use a lower ISO or are you already at 100? ND filter will help, of course. But you can also use a diffuser when using low power objectives. WB: do you take "custom" WB? (I don't think any of the built-in WB settings will do). If not, that is what you need to do. That should correct the colo...
by 75RR
Thu Jul 16, 2015 11:59 am
Forum: Pictures and Videos
Topic: Alga in LED
Replies: 15
Views: 2282

Re: Alga in LED

What is Brightfield + Pol used in the 2nd image? Brightfield with a pinch of Polarized light. (LIghtly crossed) ;) Is anybody using LED illumination? Looking for some feedback in order to improve the images. Something like: That is what Cool White looks like - get a warmer LED or a real ND filter m...
by 75RR
Thu Jul 16, 2015 4:00 am
Forum: Microscopes and optics
Topic: Lux meter + Kodak cameras and even a Toupcam
Replies: 35
Views: 6911

Re: Lux meter

could be very useful indeed. Here is hoping! Looking through the candlepowerforums it would seem that the best way in terms of accuracy and relevancy is to remove both the LED and the Tungsten Bulb from the microscope and shine them on the Photocell from precisely 1 meter away. That is because at 1...