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Andymod

Please help with QHY8L

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Thalestris24    1,425
1 hour ago, LightBucket said:

well not that good, as loads of noise, is the camera being cooled as looks more like a DSLR image with no darks ?

if I bring the curves up a bit and make the background more natural looking, the noise is much worse, hence the black background... :) 

 

Well, the qhy8l, I guess, as that's the thread topic. However, the OP didn't say whether the cooling was on or what it was set to, or how many subs and length of them.

Louise

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LightBucket    315
4 minutes ago, Thalestris24 said:

Well, the qhy8l, I guess, as that's the thread topic. However, the OP didn't say whether the cooling was on or what it was set to, or how many subs and length of them.

Louise

Yes realise it’s the QHY8L,was just saying it looked like a DSLR image because of the noise.. :)

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Andymod    26
6 hours ago, LightBucket said:

well not that good, as loads of noise, is the camera being cooled as looks more like a DSLR image with no darks ?

if I bring the curves up a bit and make the background more natural looking, the noise is much worse, hence the black background... :) 

 

myattempt.jpg

 

5 hours ago, Thalestris24 said:

Well, the qhy8l, I guess, as that's the thread topic. However, the OP didn't say whether the cooling was on or what it was set to, or how many subs and length of them.

Louise

 

5 hours ago, LightBucket said:

Yes realise it’s the QHY8L,was just saying it looked like a DSLR image because of the noise.. :)

Hi Thankyou for all your help, I set the cooling at -20C. The fact that you managed to get anything is a great help. I can try and achieve an image knowing there is data there. Should I be worried about the level of noise?.

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Thalestris24    1,425
11 minutes ago, Andymod said:

 

 

Hi Thankyou for all your help, I set the cooling at -20C. The fact that you managed to get anything is a great help. I can try and achieve an image knowing there is data there. Should I be worried about the level of noise?.

Hi

What was your sub length and how many did you stack?

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Andymod    26
2 hours ago, Thalestris24 said:

Hi

What was your sub length and how many did you stack?

300 secs and only 4 in stack. As soon as I can I am going to setup my camera gain etc again and capture a decent amount of subs and a full suite of calibration frames. My interest in the QHY8L has been resurrected. A Massive thanks for everyones input.

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carastro    2,387

I presume you are guiding,  IF so, with a cooled CCD camera, you probably should do 600sec exposures, you'll get better data that way.

Carole 

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Andymod    26
On 8 January 2018 at 21:14, carastro said:

I presume you are guiding,  IF so, with a cooled CCD camera, you probably should do 600sec exposures, you'll get better data that way.

Carole 

I will go 600 secs next time out and get a full suite of calibration frames, although now my laptop charger has decided to give up charging, it will have to wait until I get another charger. Just my luck at the moment.

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Andymod    26
On ‎10‎/‎01‎/‎2018 at 21:37, sloz1664 said:

High Andy

Have a read of the attached gain & offset procedures for your type of CCD camera

Steve

Gain & Offset.pdf

gain and offset.pdf

Thanks Steve I will have a read now I have a working laptop charger

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