Antenna Handbook: 02/25/11

VLF Radio Experiment



According to Renato Romero Homepage at http://www.vlf.it/ i starting to download Spectrum Lab Software in here from DL4yhf , and installed it to my notebook. I tested with my mic line input to make sure everything is allright that this software is function properly. Another software for this purpose is Grab and Spectran.
For the first time experienced with VLF spectrum , I connected a long wire of 24 AWG cable to my miccrophone input and have some of VLF phenomenon sound and image that I've been saved. These are couples of VLF image and sound.
These are interesting pictures.

Homemade Telescope with 200 mm Old Lens and Webcam

Lens

Jupiter 21M 200mm F4.0 Lens Reviews - Russian and Zenitar Lenses ...


I have 200 mm old slr camera lens from Belarus, it's Zenith with Jupiter 21M 200 mm Focal Length 4.0 . I always want to have telescope so I can watch and observe sky objects , moon and stars , planets maybe. This is just a beginning projects for newbie astronomer like me, I thinks it is a good starts and easy way for me to build not so cheap telescope. 


Webcam

You can use any webcam that still works and connected to your laptopFor example you can use Logitech webcam or other brands. Any brand is fine.

Amazon.in: Buy Logitech 961183-0403 Webcam Online at Low Prices in ...
Final Construction 

This is how the telescope looks like, this is only illustration image courtesy (http://photos1.blogger.com/blogger/7926/1847/1600/Webcam%20Telescope.jpg)





I took this picture with my blackberry curve 8310, not bad i think. But some of these picture is little bit out of focus. But the point is that you can also build this webcam telescope for experienced as astronomer.
And this is the results, I have taken moon objects in the morning, the moon image not to focus because I hold the lens with my hand, better to use tripod to get better moon image (courtesy  https://darkskynotebook.wordpress.com/)