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INDI Library v1.8.1 Released (09 Sep 2019)

Monthly maintenance release INDI v1.8.1

Dark frames and the 294

1 month 6 days ago 1 month 6 days ago by rishigarrod.
rishigarrod
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Dark frames and the 294 #45295
Hi All

I have recently started using a 294 OSC camera.
When I take my dark frames I can hardly see any amp glow (even when stretched) but my lights show plenty of amp glow.
This means that when I calibrate the amp glow is not removed.

Are there any settings I should make in Indi to get my darks working correctly. I have left everything on the default settings.
The darks I am trying to create are 180 second, gain 120 everything else default OOTB settings.

Attached is a stretched master dark. If you zoom in you can just see the amp glow.

Esprit 100
Skyliner 200p
WO ZS 61
Stellarmate on RPi 3B
Sesto Senso focusser
Arduino focusser
HEQ5 with belt mod
QHY5II-Mono guide camera
EOS6D - not modified
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1 month 6 days ago
Ihoujin
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Dark frames and the 294 #45299
While I do not personally have experience with the 294 sensor, I have heard from a few fellow observers that that sensor has some issues with the cold finger not uniformly cooling the chip causing what appears as amp glow but. That may be better handled with flats. And also bias frames don't work well due to extra calibration pixels located on the perimeter of the chip and how they are processed internally. You may want to check cloudynights for camera specific discussions.

INDI/KStars on Raspberry Pi 4, 4gb
Raspbian Buster with AstroPi3 script configuration
Skywatcher HEQ5 Pro Mount
Canon 600D Camera
Orion SSAG/ASI120mm @280mm Guide Scope
PHD2
Adafruit Motor Hat shield
Adafruit GPS Module
Generic Bluetooth Joystick.
Startech 7 port powered USB Hub.

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1 month 6 days ago
rishigarrod
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Dark frames and the 294 #45300
Thanks. I have checked all the forums.
I am not taking bias but Flat Darks.
My problem is that my Darks do not have the amp glow.

Indi sets the Offset to 8 per default but it seems most other software uses 40 or 50 so I will try that.

Esprit 100
Skyliner 200p
WO ZS 61
Stellarmate on RPi 3B
Sesto Senso focusser
Arduino focusser
HEQ5 with belt mod
QHY5II-Mono guide camera
EOS6D - not modified

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1 month 5 days ago 1 month 5 days ago by Herrhausen.
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Dark frames and the 294 #45328


This is my ASI 294Pro 180s master dark frame at gain 120, -10°C, debayered and stretched so you can see the amp glow. The amp glow level is exactly the same as in the light frames. My settings are these:



Always use 16bit RAW files!
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1 month 5 days ago
rishigarrod
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Dark frames and the 294 #45334
Thanks. That was it! It was still set to 8 bit which I guess is the default to improve frame rate.

Very happy to have this solved. Now I can start collecting data again.

Esprit 100
Skyliner 200p
WO ZS 61
Stellarmate on RPi 3B
Sesto Senso focusser
Arduino focusser
HEQ5 with belt mod
QHY5II-Mono guide camera
EOS6D - not modified

Please Log in or Create an account to join the conversation.

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