Flat field usb problem

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BlackWikkett
Posts: 205
Joined: Sat Jun 23, 2018 8:48 pm
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Re: Flat field usb problem

Post by BlackWikkett » Wed Sep 11, 2019 1:04 pm

Both of the examples you've provided show the white histogram curve at 40%. Try moving the peek to 50%, this is my default and generates working flats with the 294. Settings that work for me are 300 gain, 0 brightness and adjust exposure to move the white histogram peek to 50%. Example for my RC6 using and IDAS D1 filter and a $20.00 tracing pad (illumination source) on lowest setting that is defused through a T-shirt the settings are 360 ms exposure, 300 gain, 0 brightness. Flats tool setup for 50 frames, mono and bias checked.

Fabio F.
Posts: 11
Joined: Sun Sep 08, 2019 11:52 am

Re: Flat field usb problem

Post by Fabio F. » Thu Sep 12, 2019 4:43 pm

I installed the latest version of Sharpcap and tried to capture 3 master flat with the following results.

For all the tests I used a Skywatcher 80ED telescope with a Geoptik flat field.



https://www.dropbox.com/s/crtedzh81qlfp ... 8.png?dl=0

https://www.dropbox.com/s/cs4gex6cb0fkf ... 4.png?dl=0

https://www.dropbox.com/s/6cvl28fjfx5ll ... 9.png?dl=0
Attachments
3 master flat.png
3 master flat.png (855.27 KiB) Viewed 27 times
impostazioni 2.png
impostazioni 2.png (133.97 KiB) Viewed 27 times
impostazioni.png
impostazioni.png (122.22 KiB) Viewed 27 times

Fabio F.
Posts: 11
Joined: Sun Sep 08, 2019 11:52 am

Re: Flat field usb problem

Post by Fabio F. » Thu Sep 12, 2019 4:50 pm

Attachments
impostazioni 2.png
impostazioni 2.png (195.39 KiB) Viewed 27 times
impostazioni 1.png
impostazioni 1.png (188.79 KiB) Viewed 27 times
3 flat.png
3 flat.png (882.86 KiB) Viewed 27 times

Fabio F.
Posts: 11
Joined: Sun Sep 08, 2019 11:52 am

Re: Flat field usb problem

Post by Fabio F. » Thu Sep 12, 2019 4:51 pm

histogram
Attachments
istogramma.png
istogramma.png (144.86 KiB) Viewed 27 times

Fabio F.
Posts: 11
Joined: Sun Sep 08, 2019 11:52 am

Re: Flat field usb problem

Post by Fabio F. » Thu Sep 12, 2019 4:54 pm

Thanks for all the advice.
However, Sharpcap is a fantastic software.

BlackWikkett
Posts: 205
Joined: Sat Jun 23, 2018 8:48 pm
Contact:

Re: Flat field usb problem

Post by BlackWikkett » Fri Sep 13, 2019 2:10 am

Try using Bias in the flat frame tool along with mono.

Fabio F.
Posts: 11
Joined: Sun Sep 08, 2019 11:52 am

Re: Flat field usb problem

Post by Fabio F. » Mon Sep 16, 2019 7:08 am

Attachments
2019-09-16_085746.png
2019-09-16_085746.png (158.62 KiB) Viewed 1 time
2019-09-16_085728.png
2019-09-16_085728.png (156.07 KiB) Viewed 1 time
2019-09-16_085319.png
2019-09-16_085319.png (896.52 KiB) Viewed 1 time

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