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M74 - NGC 628 - Phantom Galaxy

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#1 aacc66

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Posted 20 February 2019 - 11:56 PM

Ok this is my take on M74.  The galaxy is located in Pisces and it is about 32 million light years from us.

 

I imaged this galaxy between September and November of last year.  I had some data from 2015, but was not on par with the recent data set, so I only used the recent data.

 

here are the settings:

- Edge HD 9.25 on CGEM
- UnMod Sony a7s
- Light Subs (18 hours 33 minutes3 0 sec) 2,227 x 30 sec Subs. Data from 5 Nights
- ISO 6400
- Calibration with dark, flat and bias images
- Registering & stacking with DSS 4.10 64Bits
- Post-processing in PI with pseudo luminance channel.
- Red Zone

 

C&C welcome.

 

Alvaro

 

M74_18h33m30s_KS_DBE_LRGB_NL_Saturation_3_XSmall.jpg

 


  • nofxrx, DeanS, Starman27 and 23 others like this

#2 elmiko

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Posted 21 February 2019 - 12:09 AM

Outstanding! I posted this Galaxy last month. You're image is a lot better. Must be the 18 + hours. Great job for such a difficult object.

Mike



#3 Starkid2u

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Posted 21 February 2019 - 12:09 AM

Very nicely done on a galaxy that notoriously difficult to get a good shot of. Bravo!

 

STARKID2U



#4 Astroman007

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Posted 21 February 2019 - 12:55 AM

Very nice! Not "outstanding," but certainly very good.



#5 lynnelkriver

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Posted 21 February 2019 - 01:03 AM

Very nice image!  Was this at f10 or with a focal reducer?  Thanks!  Scott



#6 aacc66

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Posted 21 February 2019 - 10:42 PM

Thanks for all the positive comments.  Still need to work on reducing the noise (but that may require me to go to a dark side) probably with it, improving color; and improve my post-processing.

 

The image was collected with my OTA in its primitive F/10 configuration.  I don't have a focal reducer, yet. Instead, I may try to get a refractor that has a shorter focal length ~900mm, and a corresponding lower F/#... some time in the future, hopefully not so far.

 

Alvaro



#7 moxican

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Posted 26 February 2019 - 12:30 AM

Very nice image. You must have the patience of a lamb or something. Nonetheless, great work!



#8 aacc66

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Posted 26 February 2019 - 11:04 PM

Thanks.  Not sure if lambs are patient, but I had heard that they can be tasty.  grin.gif

 

Thanks again.

 

Alvaro

Very nice image. You must have the patience of a lamb or something. Nonetheless, great work!



#9 skycamper

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Posted 03 March 2019 - 11:11 AM

Alvaro,

I'm assuming you used the ground stacking function in DSS to keep the lights ,flats, bias, in the same days?

 

Great image!!

Abraham 



#10 aacc66

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Posted 03 March 2019 - 08:29 PM

Thanks.

 

nope.  I do two stackings (if get that data) one for post-meridian and another one for pre-meridian for each night.  When I am happy, or cannot wait anymore, I get all of the stackings and evaluate them by placing then on DSS and letting the application rate them.  From that I use the best one as a reference and do star alignment, using PI, and the obtained images are finally stacked in DSS.  In my latest image (ngc3344) I did the stacking in PI.

 

I am curious, how does the "ground stacking function" works in DSS.

 

Thanks again,

 

Alvaro

Alvaro,

I'm assuming you used the ground stacking function in DSS to keep the lights ,flats, bias, in the same days?

 

Great image!!

Abraham 




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