26 replies to this topic

[kd6awa]

RE: So far the trails are still there but are black rather than white

 

That's what it's supposed to do. The black pixels are just like the black pixels in your darks - they have a value of zero. So that pixel doesn't add anything to your stacked image.

[Riaandw]

The Keyhole nebula.

15-second exposures, 20 hours worth, shot over 3 weeks.
2120 Meade 10" Schmidt Cassegrain. (it's 40 years old)
F/6.3 Reducer Flatner @ 155mm for F5.5
ZWO ASI533MC PRO
Innovation Forsight On Axis Guider
ZWO ASI120MC
Riding on a Meade LX85. 20kg overloaded.
All controlled by the ASIAIR Raspberry pi 4
Stacked and processed in SetiAstroSuite