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Old 13-12-2008, 08:25 AM
TrevorW
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Pentax if only I'd known

Mq question RE: I'm using my K100d for Astrophotography with ICNR set off for subs up to 2 minutes and I've noticed that compared to similar images taken by others with Canon camera's my subs are extremely noisy by comparison. Even darks taken to compensate for noise are extremely noisy. Is this normal or may the camera which I only purchased this year have a faulty censor.

The OZ Distributer's answer

I don't believe you have a faulty sensor rather a sensor that is inherently noisy. The K100D, K10D and the K200D all use CCD [Charged Coupled Device] type sensors which heat up considerably when longer exposures are made.

A more appropriate sensor is the CMOS [Complimentary Metal Oxide Semi-Conductor] which inherently have high noise immunity and low static power consumption, thus the sensor remains cooler during longer exposure. Our new K20D ($2000) has a 14 megapixel CMOS type sensor that would be more suitable for your application.

An even better alternative to single layer CMOS sensors is one where each colour is recorded on its own image layer suck as the Sigma SD-14. I'm attaching a link to a site where they have built a camera that uses the "Foveon X3" the same available SD-14.

http://lyra.berkeley.edu/c3p0cam/C3P0_Camera.html
I hope this info has helped, if you need further assistance please do not hesitate to contact....
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Old 13-12-2008, 08:34 AM
TrevorW
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PS: I tried to update the firmware did everything they said to do but do you think the bloody camera will

NOT!!!
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Old 13-12-2008, 08:34 AM
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dugnsuz (Doug)
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Here you go Trevor...
http://www.iceinspace.com.au/forum/s...595#post389595

Get it modded by Eric and you'll be a happy chappy!
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Old 13-12-2008, 05:46 PM
TrevorW
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Quote:
Originally Posted by dugnsuz View Post
Here you go Trevor...
http://www.iceinspace.com.au/forum/s...595#post389595

Get it modded by Eric and you'll be a happy chappy!
I've now got a new toy to try
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Old 13-12-2008, 06:35 PM
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leinad
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Enjoy Trev.
You'll be very happy with the 350D I bet.
Now you'll need to get a DSUSB from Shoestring(get a good length of extension cable too) Plus T-thread EOS adaptor.

Put that frustration away now.. all smiles from hereon. And many good nights to come.

Clear skies

Quote:
Originally Posted by TrevorW View Post
I've now got a new toy to try
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Old 13-12-2008, 08:37 PM
TrevorW
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Yeah it'll be exclusively used for astro so I'll probably go with the mod as soon as my bank balance builds up again

Cheers
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Old 14-12-2008, 01:13 PM
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Quote:
Originally Posted by leinad View Post
Plus T-thread EOS adaptor.
He needn't bother chasing an EOS to T-Thread adapter, as The camera I've sold him is coming with one

I've also included a copy of DSLR focus, which should be useful No doubt the 350D will provide a pleasant change to your astro imaging!
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