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20hrs on NGC 253 @ 0.5"/px

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18 replies to this topic

#1 leemr

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Posted 08 September 2019 - 04:07 PM

Had some pretty good seeing to start with, progressively deteriorating over the course of the week into some truly terrible seeing. I managed to do a pretty good job of using the good nights for luminance and the poor nights for chrominance which worked rather well. All up the luminance master clocked in at 1.95" I did miss the majority of one night of good seeing when, after an hour of imaging, something went wrong and I ended up with the rest of the night capturing just the tip of the galaxy.

 

Wouldn't mind getting some more luminance on this, so if the seeing is good and nights clear when the moon phase is more agreeable, I might get some more data.

 

L: 6.67hrs

RGB: 13.75hrs

 

More capture details / full res on Astrobin

 

NGC253_final_sml.jpg


Edited by leemr, 08 September 2019 - 04:08 PM.

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#2 Jim Waters

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Posted 08 September 2019 - 04:15 PM

Impressive image...  Real nice colors, guiding and processing. 

 

How do you like your TS 8" F4.5 ONTC Newtonian?  I am considering getting there f/4 scope.


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#3 leemr

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Posted 08 September 2019 - 04:24 PM

Thanks Jim :-)

 

The ONTC is my first newtonian, I'd basically always used refractors until then, ignoring one very brief stint with an RC8. I struggled with it a lot at first... countless threads posted here about elongated stars etc. Finally found the primary cause of it was my own dodgy primary mirror fan (the ONTC does not have fans, you have to DIY this). I also struggled with star shapes in the corner of the frame with my (now sold) ASI1600MM-C; finally settled on a very small sensor so I could just ignore that because I no longer see the malformed stars.

 

So after an extended period of time, I finally got it delivering good images and I'm now happy with the purchase. I'd say most if not all of the problems I've had have been my own doing. Hard to beat a refractor for simplicity though, I think newts are the tough for perfectionists. If I was getting another newtonian I'd happily get another ONTC though.


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#4 H-Alfa

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Posted 08 September 2019 - 05:08 PM

Wow, what a beauty...

Enviado desde mi ANE-LX1 mediante Tapatalk
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#5 avarakin

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Posted 08 September 2019 - 11:39 PM

Wonderful image!

Alex


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#6 leemr

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Posted 10 September 2019 - 04:14 AM

Thanks very much H-Alfa and avarakin :-)


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#7 jhayes_tucson

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Posted 10 September 2019 - 10:17 AM

Wow...that’s an excellent image.  Very nicely done!

 

John


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#8 ChristopherBeere

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Posted 10 September 2019 - 11:48 AM

Words cant do that one justice. Outstanding.


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#9 PeteM

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Posted 10 September 2019 - 09:51 PM

Impressive image! Textbook quality you achieved.


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#10 leemr

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Posted 11 September 2019 - 02:52 AM

Thanks John, Christopher and Pete, glad you like it :D



#11 Mert

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Posted 13 September 2019 - 01:52 PM

This galaxy is on my wishlist but I can hardly imagine to obtain

such a good quality as your image!

Very nice colors and the sharpness and detail is dazzling!!


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#12 Jon Rista

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Posted 13 September 2019 - 02:06 PM

Excellent! That thing is huge! You really did it justice, and your processing/color are great.


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#13 leemr

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Posted 15 September 2019 - 12:23 AM

This galaxy is on my wishlist but I can hardly imagine to obtain

such a good quality as your image!

Very nice colors and the sharpness and detail is dazzling!!

Thanks Mert! It's a great target, definitely worth an entry on your wishlist.

 

 

Excellent! That thing is huge! You really did it justice, and your processing/color are great.

 

Thanks very much, Jon :D I actually struggled a bit with the colour on this one, but think I got there in the end.



#14 FiremanDan

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Posted 15 September 2019 - 08:59 AM

Incredible! 


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#15 kyle528

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Posted 15 September 2019 - 09:58 AM

Very nice image!


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#16 Jim Thommes

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Posted 15 September 2019 - 04:18 PM

Nice one Lee. Great color.


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#17 leemr

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Posted 16 September 2019 - 03:59 AM

Thanks very much Dan, Kyle and Jim! :-)



#18 astrovienna

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Posted 16 September 2019 - 04:51 PM

Great resolution/detail, and I think your color is spot on.  Really nice image.

 

Kevin


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#19 leemr

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Posted 18 September 2019 - 12:32 AM

Thanks Kevin :D




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