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FoxK
Carpal Tunnel
Reged: 11/07/07
Posts: 1797
Loc: Cape Cod, MA
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Hi
Was wondering if anyone's got any experience with this....till now, i've used a IR blocker as sort of a CCD protector but I bought a baader IR Pass filter which I hear my get some good cloud detail. Thanks for any input!
Fox
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Orion 80mm ED Apo Refractor
8" Classic Dob (used as Newtonian on CG5 mount)
Meade 70-AZ-A 70mm Guider using PHD
LS60TCaK/B600/C
CG-5 Advanced GT Mount
Nikon D40x with T-Adaptors
Philips SPC900NC
Imaging Source DMK 21AU04.AS
Dome=the box my mount came in so I can see my solar images in bright sun lol
- click for cloud prediction for Plymouth, MA. area
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Elias
professor emeritus
Reged: 08/31/05
Posts: 586
Loc: Greece
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Baader IR pass 685nm gave me a very good image of Jupiter and some detail on Ganymede:
http://www.astrovox.gr/forum/album_pic.php?pic_id=3904
I think it's the best for beating the seeing.
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http://www.astrochas.net/
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fishmagnet
sage
Reged: 12/11/07
Posts: 268
Loc: Satellite Beach Fla
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I have used one with my Philips PCVC 740K but have never been able to see a difference in image quality. Maybe it's a lack of experience or the cheap camera.
*****John
Edited by fishmagnet (08/10/08 10:19 AM)
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FoxK
Carpal Tunnel
Reged: 11/07/07
Posts: 1797
Loc: Cape Cod, MA
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Thanks for the replies. I'll see if i can get out and do a comparison on a filter wheel.
Thanks!
--------------------
Orion 80mm ED Apo Refractor
8" Classic Dob (used as Newtonian on CG5 mount)
Meade 70-AZ-A 70mm Guider using PHD
LS60TCaK/B600/C
CG-5 Advanced GT Mount
Nikon D40x with T-Adaptors
Philips SPC900NC
Imaging Source DMK 21AU04.AS
Dome=the box my mount came in so I can see my solar images in bright sun lol
- click for cloud prediction for Plymouth, MA. area
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chboss
member
Reged: 03/24/08
Posts: 39
Loc: Switzerland
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Hi Elias
Did you use the IR pass in combination with an UV/IR block filter?
I guess this is the way to do it?
You want a well definded IR spectrum to pass for the image while blocking the far IR that would make your image unsharp?
@John
I guess that the IR pass does only make sense with a B/W camera. A normal colour webcam uses an additional Bayer matrix with RGB filters.
Cheers Chris
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FoxK
Carpal Tunnel
Reged: 11/07/07
Posts: 1797
Loc: Cape Cod, MA
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I haven't tried Chris. Things just got a little hectic this morning. I haven't had a chance to see what exact wavelengths the 2 filters block. If they overlap...it blocks everything  Might be interesting to see the results if it allows a very narrow bandwave to pass.
--------------------
Orion 80mm ED Apo Refractor
8" Classic Dob (used as Newtonian on CG5 mount)
Meade 70-AZ-A 70mm Guider using PHD
LS60TCaK/B600/C
CG-5 Advanced GT Mount
Nikon D40x with T-Adaptors
Philips SPC900NC
Imaging Source DMK 21AU04.AS
Dome=the box my mount came in so I can see my solar images in bright sun lol
- click for cloud prediction for Plymouth, MA. area
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Elias
professor emeritus
Reged: 08/31/05
Posts: 586
Loc: Greece
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Quote:
Hi Elias
Did you use the IR pass in combination with an UV/IR block filter?
I guess this is the way to do it?
You want a well definded IR spectrum to pass for the image while blocking the far IR that would make your image unsharp?
No, i didn't use a UV/IR cut filter (it would make the image very dim), but the camera chip is quite insensitive in the far IR spectrum:
http://www.theimagingsource.com/products/cameras/sensors/icx098bl.pdf
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http://www.astrochas.net/
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