Re: [OM] Astro musings

[Mike Gordon via olympus]

<<<Have you ever thought about the K-1 with Astro tracer?

It is interesting to read about the Astro tracer.  Thanks for the link.  I 
think Chuck brought it up when it first appeared.  There are a bit more recent 
cams with that feature too.

I liked this link too:

https://milkywayphotographers.com/article/2021/01/21/pentax-astrotracer-guide-what-it-is-and-how-to-use-it/


It is a very interesting use of IBIS movements but the technique doesn't take 
kindly to ultra-wides for unclear reasons..  My sense is that even though the 
sensors APSC sensors are a bit larger than MFT the advancement in sensor tech 
in the recently Oly cams will result in cleaner files on MFT.  The HHHR 
technique does indeed stack the stars and takes 16 shots which worked fine for 
the FL's we tried but I bet longer FL's would result in mushy results as the 
stars would move too far for the stack to work.  Better off manual stacking 
then most likely than shortening the exposure time for each image--that is 
speculation.   The longer FL work OK for shorter exposures with the astro 
tracer.  

Mike
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