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aostling
02-03-2008, 01:39 PM
I took this photo of a Gilded Flicker excavating a cavity in a saguaro cactus with my new "digiscope." It gives the 35mm-equivalent field-of-view and aperture of a 3100mm f10 lens. But as you can see, the spotting scope is a lightweight -- a Pentax PF 65A II with 14mm eyepiece giving a 28X magnification. The camera is a Canon A570, a relatively inexpensive P&S with a 35-140mm (equivalent) zoom. The entire outfit including tripod weighs 5.5 pounds.

The key to making this easy to use in the field is the slip-fit adapter collar, which I machined out of Delrin. The length of the adapter is not too critical if used with a wide-angle eyepiece -- mine locates the front lens element about 3/8" from the eyepiece element.

I shoot with the camera at max telephoto. To avoid all vibration I use the self timer. I have not quite figured out how to adapt a cable-release, but that would be advantageous for photos of active birds like woodpeckers.

http://i168.photobucket.com/albums/u183/aostling/IMG_0041.jpg

http://i168.photobucket.com/albums/u183/aostling/IMG_0001-1.jpg

http://i168.photobucket.com/albums/u183/aostling/IMG_0004-1.jpg

Lew Hartswick
02-03-2008, 04:39 PM
Reminds me of what I did about 52 yrs ago with my Exacta SLR and
half of a pair of 7x binoculars. With the 180mm lens and the 7x
it made some pretty good telephoto shots.
I'll have to see what I can do now with the digital but with a 10x
optical zoom I may not need to for the kind of pix I take now.
That is quite a good shot of the flicker.
...lew...

rollin45
02-03-2008, 04:41 PM
Very nice!

I'm surprised someone hasn't come up with an infared triggering device, or wireless...like bluetooth. Seems like there are lots of tripod type photo's which would benefit from a remote trigger.

rollin'

aostling
02-03-2008, 06:22 PM
I'm surprised someone hasn't come up with an infared triggering device, or wireless...like bluetooth. Seems like there are lots of tripod type photo's which would benefit from a remote trigger.


Only Samsung makes a digital P&S camera with an infrared remote. I'm awaiting delivery of a Samsung NV10 which I found on eBay for a very reasonable price, and will see how it works in this application.

Evan
02-04-2008, 05:54 AM
That looks really good Allan. Afocal coupling isn't always as sharp as that. Absent a shutter release look for a delayed shutter mode, or "slow" shutter. Many PS cameras have that available. They often have a short version of the time release, 2 seconds instead of ten second countdown.

aostling
02-04-2008, 09:45 AM
Absent a shutter release look for a delayed shutter mode, or "slow" shutter. Many PS cameras have that available. They often have a short version of the time release, 2 seconds instead of ten second countdown.

Evan,

The Canon A570 has both the 10 and 2 second delayed release, and something even better for capturing perching birds: a custom delay which allows the user to select the delay time, and the number of shots (1 to 9) in a burst mode. I chose a burst of three shots to get this flicker.

BCtech
02-04-2008, 03:14 PM
I had some fun myself, making a photography adapter with my lathe, however, mine was for some things that were rather closer and smaller.

It is made of nylon which seemed quite easy to machine. It fits onto the eyepiece of the camera or can be used with the eyepiece removed.

http://img338.imageshack.us/img338/4721/img2357fu6.jpg

And the camera lens fits into the other end.

http://img230.imageshack.us/img230/340/p1299236xm9.jpg

Got one shot of an old cobbweb with some other junk in it.

http://img153.imageshack.us/img153/9518/img24421ju5.jpg

and this one is something you'd find on your dinner plate. Any guesses?

http://img297.imageshack.us/img297/6626/img2453lw2.jpg

Evan
02-04-2008, 03:19 PM
Nice pics. Even nicer bit of nylon. ;) Quite a waste using it for that purpose. That's graphite filled nylon, also known as ballistic nylon. It is very tough and makes great bearings for high load, low speed or oscillating service. It also costs a lot.

Evan
02-04-2008, 03:22 PM
Oh yeah, this is something I found in my ear a couple of years ago. Any guesses? :D

http://vts.bc.ca/pics/aniger1.jpg

Nice microscope.

BCtech
02-04-2008, 04:05 PM
Nice pics. Even nicer bit of nylon. ;) Quite a waste using it for that purpose. That's graphite filled nylon, also known as ballistic nylon. It is very tough and makes great bearings for high load, low speed or oscillating service. It also costs a lot.

I know what it cost's because I paid retail for a 12" chunk of it. What is a good source for cheap plastic to do this kind of thing with? I know in college, we had gray plastic in many sizes and I'd like to get some of that.

BCtech
02-04-2008, 04:09 PM
Oh yeah, this is something I found in my ear a couple of years ago. Any guesses? :D

http://vts.bc.ca/pics/aniger1.jpg

Nice microscope.


If you've got that in your ear, you're in trouble. You sure it was your ear?

Aspergillus niger is a fungus and one of the most common species of the genus Aspergillus. It causes a disease called black mold on certain fruits...

Evan
02-04-2008, 04:21 PM
It was in my ear all right. Took a couple of months and a series of wrong diagnoses by the doctors before I cultured it myself and established what it was to the specialist. A. Niger is the most common cause of fungal ear infection and it sucks, believe me. It's gone now but I still have a slight residual hearing loss.

BCtech
02-04-2008, 04:28 PM
It was in my ear all right. Took a couple of months and a series of wrong diagnoses by the doctors before I cultured it myself and established what it was to the specialist. A. Niger is the most common cause of fungal ear infection and it sucks, believe me. It's gone now but I still have a slight residual hearing loss.

OK, I guess the http://vts.bc.ca/pics/aniger1.jpg image source was a bit of a red herring then.

So is this what is commonly referred to as swimmers ear?

Regarding my mystery image, a bit of a hint is that it's something that's commonly used to culture A.Niger.

The microscope used to belong to my late grandfather who was one of the first district managers for BC Hydro and was a great inspiration for me as it seemed he could make anything.

aostling
02-04-2008, 04:34 PM
What is a good source for cheap plastic to do this kind of thing with? I know in college, we had gray plastic in many sizes and I'd like to get some of that.

I got my Delrin on eBay. But Online Metals cuts it to order http://www.onlinemetals.com/merchant.cfm?pid=6618&step=4&showunits=inches&id=217&top_cat=181.

BCtech
02-04-2008, 04:43 PM
I got my Delrin on eBay. But Online Metals cuts it to order http://www.onlinemetals.com/merchant.cfm?pid=6618&step=4&showunits=inches&id=217&top_cat=181.

Now I'm wondering if I paid the right price for the Nylon. It was $20 for the foot of 2" and I see from your link that the acetal is $17.76 per foot for 2".

What should the graphite filled nylon be per foot?

Evan
02-04-2008, 04:51 PM
OK, I guess the http://vts.bc.ca/pics/aniger1.jpg image source was a bit of a red herring then.

Red herring? How so? I own that domain and a number of others.

BCtech
02-04-2008, 05:21 PM
Red herring? How so? I own that domain and a number of others.

Because the host site for the image http://vts.bc.ca/ is for a no longer operating computer sales and service business (I now realize this is registered to you) that appeared to have nothing to do with you. This would usually indicate the source of the image was the result of an image search in Google.

Regardless, any guesses?

aostling
02-04-2008, 05:36 PM
Regardless, any guesses?

an emulsion of oil and egg yolk, i.e. mayonnaise.

BCtech
02-04-2008, 06:37 PM
an emulsion of oil and egg yolk, i.e. mayonnaise.
Colour is correct but think more granular.

TECHSHOP
02-04-2008, 08:12 PM
I'm going to get some popcorn and watch the show...

Evan
02-04-2008, 09:11 PM
This would usually indicate the source of the image was the result of an image search in Google.
Heh. If you looked you might find my image. Google images is a huge leech on web servers. I have thousands of images online. You might note that I give names to the images that won't produce a good match on a search. I nearly always make them alphanumeric with a contraction of the name included.

Every once in a while I have a look at my server logs to find out who is leeching by directly linking to my images for display on a page somewhere. Then I switch the image for a warning notice for a week or two. Then, if it isn't unlinked I put up something a little more embarrassing.

I had one guy who was linking to a full size pic of a squirrel and using it as his avatar on a writers forum. He had a lot of posts and every time somebody loaded up a post it fetched the image again. He was singlehandedly accounting for a gig of data per month just with that trick. I warned him on the forum and he ignored me. So, instead of a squirrel he got this as his avatar.

http://vts.bc.ca/pics3/squirrel.jpg

BCtech
02-04-2008, 10:40 PM
Heh. If you looked you might find my image. Google images is a huge leech on web servers. I have thousands of images online. You might note that I give names to the images that won't produce a good match on a search. I nearly always make them alphanumeric with a contraction of the name included.

Every once in a while I have a look at my server logs to find out who is leeching by directly linking to my images for display on a page somewhere. Then I switch the image for a warning notice for a week or two. Then, if it isn't unlinked I put up something a little more embarrassing.

I had one guy who was linking to a full size pic of a squirrel and using it as his avatar on a writers forum. He had a lot of posts and every time somebody loaded up a post it fetched the image again. He was singlehandedly accounting for a gig of data per month just with that trick. I warned him on the forum and he ignored me. So, instead of a squirrel he got this as his avatar.

http://vts.bc.ca/pics3/squirrel.jpg

Great idea! That's hilarious and a nice looking squirrel if I do say so.

I've looked at specs before as to who is connecting to what page etc on my sites but never thought to do that. I guess I'm not really concerned about traffic levels either as my "customers" are paying a flat fee for hosting. What tools do you use for reviewing who is leeching files. I've been using sitemeter to track hits and can't recall if it allows that level of detail.

With respect to the image, it's mashed potatoes. I found it interesting that they had a cellular structure when magnified.

Evan
02-05-2008, 02:43 AM
I'm gradually cutting down my hosting. I still have a couple of commercial sites and a couple of fairly busy non profits including the Alpine Club of Canada and the Prince George chapter of the Royal Canadian Astronomical Society. Since I have closed my business and retired I don't have a lot of interest in maintaining any sites. The only ones I still have are basically static sites with no maintenance required. or maintained by the site owners. I used to have a real estate site for a few years. What a pain. I developed all my own templates to make it easier.


Mashed potatos, eh? There are many things that are near impossible to identify by looking at a photomicrograph.