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Old 23-01-2008, 12:14 PM
tornado33
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tornado33 is offline
 
Join Date: Jan 2005
Location: Newcastle, NSW, Australia
Posts: 4,116
Tarantula neb in infra-red light only

Hi
Here is a single 5 minute ISO 800 exposure, using my Hutech modded 350D (clear AR coated glass option to allow IR imaging). cloud stopped further imaging. I used the IR filter mainly to test the guiding of my q guider as the sky was too bright for unfiltered imaging.
10 inch f5.6 newtonian. Infra red pass filter (blocks all visible light). As we can see theres not much IR light given off by the nebula itself.
I hand guided the scope using the off axis guider but used my new q guider camera to put the guidestar on the laptop screen. Taking 0.4 sec images made the star bright enough to see. Being strongly comatic it appeared as a long streak not a point of light.
Scott
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