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M81 after 25 hours

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#1 Mark72

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Posted 18 November 2012 - 12:58 PM

Hi,

Just thought to got these elusive Arp's loops with tonnes of exposure but not much of them seen here.
I console myself that my FOV is too small to get them;)

LRGB - 880:190:160:240 minutes


http://www.astrobin.com/24889/B/



Thanks for looking!

Mark

#2 lordfabri

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Posted 18 November 2012 - 01:02 PM

A LOT of exposure here..

Goot shot Mark!

Best Regards,

Fabrizio

#3 rigel123

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Posted 18 November 2012 - 01:06 PM

Beautiful!

#4 J.P.M

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Posted 18 November 2012 - 01:09 PM

I second to Warren, beautiful!

#5 broca

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Posted 18 November 2012 - 01:26 PM

I feel like I am there! Excellent work!

#6 SL63 AMG

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Posted 18 November 2012 - 02:54 PM

Mark, that's a great image. Lot's of color and detail.

Please take the next comment with a grain of salt as I am definitely not trying to minimize all of the hard work and effort you put into this spectacular image.

I think the stars are a bit "fat". It is particularly noticeable when viewing the smaller version, not the full resolution. With the diffraction spikes, it makes the larger stars look a little "square". On the full resolution version, it seems less noticeable.

I am wondering if perhaps you could mask the stars and then reintroduce them into the image as smaller stars without using image processing to reduce their size which may cause artificats to appear. The stars seem a bit bloated to me which I suppose could be due to the long exposure times, in which case only image processing can reduce them. Am I right on that?

Anyway, I know little about image processing so I am probably the last person you need advice from...lol.

Great job sir!

#7 Mark72

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Posted 18 November 2012 - 03:00 PM

Thanks a lot guys!

Dave,

You are right! Fully agree. I feel the best way out are your stars - I'm so envious of your data;)
I 'll try to improve.


Mark

#8 blueman

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Posted 18 November 2012 - 03:12 PM

Nice image, lots of data!
Blueman

#9 mcarroll

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Posted 18 November 2012 - 04:11 PM

That's a very nice M81! You put a lot of time into it, so maybe you need darker skies to get Arp's loop to show up better.

#10 Aircrftr

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Posted 18 November 2012 - 05:50 PM

I have to agree with everyone else here. I think it looks great!

#11 tidroplane

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Posted 18 November 2012 - 06:29 PM

Beautiful image, time well spent!

#12 Mark72

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Posted 19 November 2012 - 03:32 PM

Thanks a lot guys!

Mark

#13 lunar

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Posted 19 November 2012 - 10:11 PM

Wow! You certainly did a good job here. Wonderful detail and color in the spiral arms and deepness of the field.

#14 SL63 AMG

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Posted 20 November 2012 - 12:36 AM

Dave,

You are right! Fully agree. I feel the best way out are your stars - I'm so envious of your data;)
I 'll try to improve.


Mark


Your data is fine and your image is fantastic. I just gave my initial impression of how the stars appeared in the small image.

I think if you can figure out how to get the color into the stars rather than in a halo around the star, the stars would look cleaner.

Anyway, my comment was definitely not meant to berate you or your hard work and tremendous effort. After reading it again, it comes across that way.

Instead, it was meant as a freindly opinion that I hoped would make your already fabulous image even better.

I dont' like typing my comments. It's hard to convey constructive criticism without coming across like a jerk.

Please accept my apology.

Your friend,

Dave

#15 jsigone

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Posted 20 November 2012 - 01:26 AM

sweet work on that target

#16 scirocco1

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Posted 20 November 2012 - 01:49 AM

Great details, I specially like the background, noise free and lots of faint stuff visible. I think hard stretching should reveal the elusive loop.

#17 kfir Simon

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Posted 20 November 2012 - 05:35 AM

WOW - that is a great image!
I envy your patience...to dedicate 25 HRS in just one object!!??
But the effort really pays off.

Cheers,

Kfir

#18 bill w

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Posted 20 November 2012 - 01:25 PM

nice job warren

#19 Mark72

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Posted 20 November 2012 - 03:43 PM

Thanks guys!

Dave,

No problem at all, thanks for pointing this out.
Perfectly valid comment.

Mark

#20 w orchid

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Posted 20 November 2012 - 04:43 PM

Fantastic image of M81.

#21 Mark72

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Posted 21 November 2012 - 12:59 PM

Thanks!

Mark

#22 Harel_Boren

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Posted 21 November 2012 - 04:20 PM

Beautiful image, time well spent!

I couldn't have said it better. Thanks for sharing.
Cheers,
Harel

#23 Mark72

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Posted 22 November 2012 - 04:25 PM

Thanks Harel,

Mark

#24 mikotoy

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Posted 24 November 2012 - 05:37 AM

Ach du mein gute!

25h and the result is fantastic. Love the detail and the colour - nice processing.

Can't wait to see more of your stuff in the future.

-Hytham

#25 Mark72

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Posted 25 November 2012 - 10:21 AM

Thanks Hytham;)

Mark






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