7th December 2023: added payment option Alipay to purchase Astro Pixel Processor from China, Hong Kong, Macau, Taiwan, Korea, Japan and other countries where Alipay is used.
Forgive the dumb question as I'm just starting out. Any idea what these streaks might be?
Using:
WO Z61
ASI294MC Pro
EQ6-r Mount
Optolong L-Pro filter
ASI 120mm Mini Guide cam
@greenj23 It is hard to say without more information but it looks like walking noise to me. Did you drizzle in between exposures?
Walking noise arises when there is a slight shift of the FOV in between exposures such that instrument noise gets slowly shifted with respect to the target. It is hard to impossible to remove during processing and post-processing. The only remedy against it is to sufficiently drizzle in between images so the noise gets spread in a random and large enough way so it can be processed out.
@wvreeven Thanks! I'm using the AsiaIR Pro to capture. I don't it has a drizzle option and this is the first time ive seen this issue. I used DSS to stack. I guess i'll see if this issue happens again next time I get a clear night.
@wvreeven Thanks! I'm using the AsiaIR Pro to capture. I don't it has a drizzle option and this is the first time ive seen this issue. I used DSS to stack. I guess i'll see if this issue happens again next time I get a clear night.
I think Wouter meant to say dither rather than drizzle - you need to dither to drizzle however. Anyway, the walking noise is due to good guiding while having flex between the guide scope and main scope. I've heard that very good calibration can get rid of it but I haven't seen that in practice. Dither is the way to go. "Dither or die" they say.
@wvreeven Thanks! I'm using the AsiaIR Pro to capture. I don't it has a drizzle option and this is the first time ive seen this issue. I used DSS to stack. I guess i'll see if this issue happens again next time I get a clear night.
I think Wouter meant to say dither rather than drizzle - you need to dither to drizzle however. Anyway, the walking noise is due to good guiding while having flex between the guide scope and main scope. I've heard that very good calibration can get rid of it but I haven't seen that in practice. Dither is the way to go. "Dither or die" they say.
Oops, yes I meant dither instead of drizzle. Thanks for the correction!
