Strange colors in my live stack image ?

[Opmc73]

Robin
below are the info of my dark frame for 60s . I use same offset and teperature as my captures .
Also now I am using the histogramme function to assist with pose , it works beter, we can guess the ring in the very fine colors, but it is not visible.

Code: Select all

[ATR2600C]
FrameType=Dark
Debayer Preview=On
Output Format=FITS files (*.fits)
Capture Area=6224x4168
Binning Mode=Average
Binning=1x1
Pan=0
Tilt=0
Colour Space=RAW16 (Ultra Low Noise)
Exposure/Gain Shift=0
Status LEDs=Off
Black Level=396
USB Speed=4
Auto Gain with Auto Exposure=Off
Auto Exp Target=120
Frame Rate Limit=Maximum
Analogue Gain=100
Exposure=60.000s
Window Heater Power=2
Target Temperature=-10
Cooler=On
Fan=On
Temperature=-10
Timestamp Frames=Off
CA Reduction/Synthetic Blue=Off
Mask over exposed pixels=Off
Flip (after dark/flat)=None
Trail Width=3
Minimum Trail Length=100
Trail Detection Sensitivity=9
Remove Satellite Trails=Off
Background Subtraction=Off
Planet/Disk Stabilization=Off
Banding Threshold=10
Banding Suppression=0
Apply Flat=None
Hot Pixel Sensitivity=5
Subtract Dark=None
DisplayStretchEnable=0
NegativeDisplay=0
Display Black Point=0.0059814453125
Display MidTone Point=0.0069814453125
Display White Point=0.0079814453125
Notes=
TimeStamp=2024-10-31T14:03:14.8968023Z
SharpCapVersion=4.1.12693.0
FrameCount=11
FrameType=Dark

[Opmc73]

I think it is solved. I changed my gain and duration setting to have a better histogram (basically I took what SC suggest analysis the sky background and work around the values suggested). Now I have correct histogram and no more strange big colored donut visibles. I think I was working we too extrem values that catch the inehrent default like secondary shadow etc...

[admin]

Hi,

glad to hear that it is all sorted now - clear skies!

Robin