Night Andromeda Galaxy with astrotracer

Andromeda Galaxy with astrotracer · **10 Likes**

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

torashi · 01-10-2020, 02:52 AM

Amazing. Great work!

**foxandcrow** · 01-10-2020, 08:56 AM

Very impressive. Great shot.

**Kevin B123** · 01-10-2020, 09:22 AM

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.

GRB · 01-10-2020, 10:52 AM

Well done, thanks for sharing it with us.

**Archimedes the Dog** · 01-10-2020, 11:54 AM

Nice shot! I used to have a poster of a similar view!

**pichaser** · 01-10-2020, 01:49 PM

Originally posted by Dan Paris

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.

ginnyfoos · 01-10-2020, 03:42 PM

Lurve it!!! Great Shot

Dan Paris · 01-11-2020, 06:23 AM - **1 Like**

thanks a lot torashi, foxandcrow, Kevin, GRB, Archimedes the Dog, pichaser and Jennifer !

Originally posted by Kevin B123

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

**Apet-Sure** · 01-11-2020, 02:25 PM

I never get tired of the awe and mystery of Andromeda. Well done!

Dan Paris · 01-12-2020, 02:56 AM

thanks a lot Apet-Sure,

Dan

**Johnt1r11** · 05-17-2021, 05:34 PM

Originally posted by Dan Paris

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

Super job! Great technique. Really displays the wonders of space!

cymric · 05-17-2021, 06:46 PM

Wow! The technique seems to require a lot of patience

Great picture in the end

cubefarmer · 11-29-2023, 11:38 AM

Beautiful work. I'm always interested in seeing results using Astrotracer; I'm thinking about buying an O-GPS2 unit for my K-70.

Dan Paris
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01-10-2020, 02:52 AM	#2
torashi Veteran Member Join Date: Sep 2017 Location: Medellín Posts: 1,322	Amazing. Great work!

01-10-2020, 08:56 AM	#3
foxandcrow Site Supporter Join Date: Sep 2017 Location: Colorado Posts: 1,994	Very impressive. Great shot.

01-10-2020, 09:22 AM	#4
Kevin B123 Loyal Site Supporter Join Date: Jul 2016 Location: Hampshire Photos: Gallery \| Albums Posts: 3,176	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 Pentaxian Join Date: Jun 2016 Location: Southcentral Alaska Posts: 817	Well done, thanks for sharing it with us.

01-10-2020, 11:54 AM	#6
Archimedes the Dog Site Supporter Join Date: Jul 2013 Location: Boise, ID Posts: 1,146	Nice shot! I used to have a poster of a similar view!

01-10-2020, 01:49 PM	#7
pichaser Site Supporter Join Date: Oct 2013 Photos: Gallery Posts: 2,776	Originally posted by Dan Paris 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
ginnyfoos Veteran Member Join Date: Aug 2017 Location: Sacramento, CA Photos: Albums Posts: 550	Lurve it!!! Great Shot

01-11-2020, 06:23 AM - 1 Like	#9
Dan Paris Veteran Member Join Date: Jul 2018 Posts: 505 Original Poster	thanks a lot torashi, foxandcrow, Kevin, GRB, Archimedes the Dog, pichaser and Jennifer ! Originally posted by Kevin B123 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
Apet-Sure Site Supporter Join Date: Dec 2015 Location: Goldsboro North Carolina Photos: Gallery \| Albums Posts: 2,861	I never get tired of the awe and mystery of Andromeda. Well done!

01-12-2020, 02:56 AM	#11
Dan Paris Veteran Member Join Date: Jul 2018 Posts: 505 Original Poster	thanks a lot Apet-Sure, Dan

05-17-2021, 05:34 PM	#12
Johnt1r11 Site Supporter Join Date: Mar 2020 Location: New Jersey Posts: 44	Originally posted by Dan Paris 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 Super job! Great technique. Really displays the wonders of space!

05-17-2021, 06:46 PM	#13
cymric Senior Member Join Date: Dec 2016 Location: Bhubaneswar; A State in the East of India Photos: Gallery \| Albums Posts: 296	Wow! The technique seems to require a lot of patience Great picture in the end

11-29-2023, 11:38 AM	#14
cubefarmer Senior Member Join Date: Apr 2013 Location: Michigan Photos: Gallery Posts: 226	Beautiful work. I'm always interested in seeing results using Astrotracer; I'm thinking about buying an O-GPS2 unit for my K-70.