SharpCap Sensor Analysis Doubt

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MollyJanet
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Joined: Sat May 01, 2021 7:19 am

SharpCap Sensor Analysis Doubt

#1

Post by MollyJanet »

Hello people!

I have tried to run the sensor analysis from SharpCap for my QHY294C several times, but I couldn't make it work well. It always complains about the levels of light. I have tried to run it using a white screen with the lowest brightness possible, with medium brightness and using a t-shirt between the screen and the camera, using natural light, thru my telescope... But in the middle of the routine, it fails because of the light.

What do you do to run this routine? Is there any "easy" way to run it?

Thank you so much!
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admin
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Re: SharpCap Sensor Analysis Doubt

#2

Post by admin »

Hi,

my approach is to use a C thread lens (on a T(male) to C(female) adapter). If you get a lens with a variable aperture then it is very easy to adjust the light level
PXL_20210501_152904217.jpg
PXL_20210501_152904217.jpg (161.3 KiB) Viewed 460 times
Adapter like this : https://www.modernastronomy.com/shop/ac ... t-adapter/
Lens like this : https://www.ebay.co.uk/itm/402660318506

Some cameras come with the adapter and the lens is always useful for testing when the sky is cloudy.

In general though, the following will help

* Use the very latest version of SharpCap - 3.2.6482 or 4.0.7728 (or newer) - there have been updates at various points to try to make the analysis more reliable
* Do not allow the light level to vary throughout the measurement - varying it in one part may get you stuck later on.

cheers,

Robin
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