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Andromeda Galaxy with astrotracer
Lens: Samyang 135mm f/2 Camera: Pentax K-1 Mark II Photo Location: Ceillac, French Alps ISO: 800 Aperture: F2 
Posted By: Dan Paris, 01-10-2020, 01:59 AM

Hi,

this is a stack of 18 frames, 30 sec. each, together with 60 calibration frames (biases, flats, darks). Shot on tripod with astro-tracer. Preprocessing with Sirl, star reduction with PS CS2 and final tweaking with Rawtherapee.




regards,

Dan
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01-10-2020, 02:52 AM   #2
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Amazing. Great work!

01-10-2020, 08:56 AM   #3
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Very impressive. Great shot.
01-10-2020, 09:22 AM   #4
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A fine image, thanks for posting it.

As you were using a 135mm lens, was this a big crop?.

I read the Samyang 135 is spot on for astro work, this shows that nicely. And with astrotracer, good work there too.

01-10-2020, 10:52 AM   #5
GRB
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Well done, thanks for sharing it with us.
01-10-2020, 11:54 AM   #6
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Nice shot! I used to have a poster of a similar view!
01-10-2020, 01:49 PM   #7
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QuoteOriginally posted by Dan Paris Quote
Hi,

this is a stack of 18 frames, 30 sec. each, together with 60 calibration frames (biases, flats, darks). Shot on tripod with astro-tracer. Preprocessing with Sirl, star reduction with PS CS2 and final tweaking with Rawtherapee.




regards,

Dan
Such a seemingly simple photograph that demands such meticulous efforts.
01-10-2020, 03:42 PM   #8
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Lurve it!!! Great Shot

01-11-2020, 06:23 AM - 1 Like   #9
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thanks a lot torashi, foxandcrow, Kevin, GRB, Archimedes the Dog, pichaser and Jennifer !

QuoteOriginally posted by Kevin B123 Quote

As you were using a 135mm lens, was this a big crop?.

I read the Samyang 135 is spot on for astro work, this shows that nicely. And with astrotracer, good work there too.

Yes the crop is about micro4/3 size.


The Samyang is indeed excellent for astro work, provided you shoot objects of the appropriate angular size. It has very low CA and coma. Its only shortcoming is strong vignetting wide open, but you can get rid of that with flat field frames.

Dan
01-11-2020, 02:25 PM   #10
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I never get tired of the awe and mystery of Andromeda. Well done!
01-12-2020, 02:56 AM   #11
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thanks a lot Apet-Sure,

Dan
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