Taken with a Skywatcher 130pds and sony a7s. Total exposure time 2 hours. First time with a coma corrector!
#Andromeda Galaxy-130pds
dense saddle
dense saddle
Yeah I also used a CLS filter. It seems to help with contrast at the cost of some shifting colors and I haven't quite figured out how to compensate yet
There's also a noticable noise pattern that's really prominent, kinda like zebra stripes. To get a cleaner image would it be more beneficial to have more exposures or longer exposures?
nocturne root
ah yes walking noise
you need to dither to avoid it, but if you already have it then theres nothing you can do
nocturne root
There's also a noticable noise pattern that's really prominent, kinda like zebra...
did you run spcc and bge?
nocturne root
There's also a noticable noise pattern that's really prominent, kinda like zebra...
more total time is always better, if you can do longer exposures for less files then great
dense saddle
What's spcc and bge? And is there anything besides dithering avoid getting walking noise? Is it a camera issue?
nocturne root
spcc is color calibration and bge is background extraction
what software did you use?
and yeah some cameras have a fixed noise pattern, so when your FOV drifts in a certain way, the noise gets smeared into walking noise
thats why dithering is so important, its really the only way
dense saddle
I use deep sky stacker to stack the initial image then bring it into photoshop to do the stretching and final look
Didn't know about dithering... I'll have to try that next time
dense saddle
I'm using a star adventurer GTI. Is there a way to do dithering with the synscan app? Everything I'm seeing online seems to point to "no" lol