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View Full Version : Infrared astronomy, images, filters



homo_cosmosicus
2006-Aug-06, 04:01 PM
I'm not sure if this is right forum to ask this question...

I want to start taking images with near-infrared filters.
What filters can you recommed?

Also, I want to start taking video images in the same
near-infrared area, how do I do it, is it with regular video camera
with infrared filter on it, or I need to get special infrared video camera?

Thank you for the answer.

Kaptain K
2006-Aug-06, 05:57 PM
The "infrared" filter on a video camera is there to block infrared.

Tim Thompson
2006-Aug-06, 07:15 PM
I am not sure what you need in the way of amateur equipment to do this. Try the infrared astronomy tutorial (http://coolcosmos.ipac.caltech.edu/cosmic_classroom/ir_tutorial/) and see if you can find anything useful there. The old fashioned way would be to use IR sensitive film. If you want to do CCD imaging, then you have to look at the IR sensitivity of the various commercially available amateur CCD cameras.

Lance
2006-Aug-06, 10:58 PM
I've noticed that the several Olympus digital cameras that I've own(ed) have all been able to see the flashing IR LED of a remote control. I expect if you added a filter to permit IR only, you'd have a good start.

homo_cosmosicus
2006-Aug-07, 04:43 PM
The "infrared" filter on a video camera is there to block infrared.

What is filter then?