Showing posts with label Celestron. Show all posts
Showing posts with label Celestron. Show all posts

Friday, May 20, 2011

In case of procrastination plug in the USB microscope

Well, not really. I was activating a replacement check card and about to go through my usual card destruction routine (file off the magnetic strip, file off the signature strip, cut the card into little bits, melt the whole damn thing) when I got curious as to what I could find with the microscope:

The main number at 10x

Center of Master Card hologram at 150x. 

Signature strip at 150x. Notice the overlap of the signature lines, whenever signing a card I always feel like the strip is too hard and it won't take the ink, but obviously the material handles the ink perfectly, this card was signed at least two years ago and the ink looks pristine. 

Friday, May 13, 2011

Micro samples: Celestron 44302

These are my first attempts at micro photography, thanks to my new toy:

US quarter

US quarter

Gap on Army ID tag, this was the result of my near electrocution many years ago. 




6mm screw

6mm screw head

6mm screw thread

McDonnald's French fry

US dime

Amazon Kindle 3 e-ink screen

24" Samsung LCD

Casio AWG-100

Casio AWG-100

Casio AWG-100

US dime

US dime

US dime

US dime

US dime

US current $5 note

US current $5 note

Nail scissors

Celestron handheld USB microscope



Since I go through so much trouble whenever I want to shoot macro, I decided to take a look at maybe a cheap microscope and try to figure out how to shoot it with my camera. I was delighted to find out that you can now buy a 150x USB microscope for less than $70. The imaging sensor is rudimentary when compared even to my phone's camera, but in this case the important part is the lens and focusing.

This is a Celestron 44302 handheld digital microscope. It is mainly designed for hobbyists that want to inspect things like coins, stamps and other collectibles, and professionals doing quality assurance inspections.

Installation was simple: pop-in the CD, install the application and then plug it into USB. There, it's done.

The microscope has a shutter that can be triggered by the software, and a focusing wheel. There are no markings or any kind of indicator to tell you your zoom level, and focusing is a pain in the ass. It took me maybe one hour of screwing with it until I more or less figured out how to get perfect shots at the lowest resolution and I can almost get a sharp shot at 150x 75% of the time. The main (only) problem is that the focusing wheel is really hard, and I don't know if it is going to loosen up with usage.

The image quality is decent, it does work. The problem is that at least until the focusing wheel is a bit easier to turn, the stand is by all means worthless: you can't keep it in position and focus at the same time. I took tons of shots of coins, memory cards, etc. It is definitely better than using the camera for straight macro because even handheld it is much easier to aim than the camera.