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M106, NGC 4217 and surroundings

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23 replies to this topic

#1 Maurice Toet

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Posted 05 March 2017 - 09:01 AM

A focal length of 500 mm is actually a little short for galaxy imaging, but M106 is rather large and a 180 mm mirror yields a large resolution. Total integration time almost 7 hours (415 minutes). Imaged with the Epsilon-180ED and Canon EOS 5D Mark II (Baader modded) at ISO 1600 (5 min. subs). February 25 & 26, 2017, Les Granges, Étoile-Saint-Cyrice, France (SQM 21.4 - 21.6).

 

The following images are crops of the actual FOV. Best to view in full-res on my website.

 

m106_83x300s_20170225_crop-XL.jpg

 

m106_83x300s_20170225-XL.jpg

 

 

 


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#2 GoFish

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Posted 05 March 2017 - 09:07 AM

Nice!  Thanks for posting. 


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#3 james7ca

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Posted 05 March 2017 - 09:07 AM

Very nice with good color and a sharp field. Would you consider getting a few shorter exposures to help with the center core detail?


Edited by james7ca, 05 March 2017 - 11:43 AM.

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#4 ismosi

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Posted 05 March 2017 - 09:10 AM

That is an exquisite image. The full size is teeming with faint galaxies. Thanks for posting it!


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#5 whwang

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Posted 05 March 2017 - 11:00 AM

very beautiful!


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#6 scopenitout

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Posted 05 March 2017 - 11:17 AM

Maurice, I love this beautiful image you have shared. The framing is perfect.
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#7 Pete_xl

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Posted 05 March 2017 - 11:56 AM

Super! Thank you for posting!


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#8 AKHalea

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Posted 05 March 2017 - 12:16 PM

Awesome image of the whole area with many tiny galaxies popping up! Thanks for sharing ..... Anil


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#9 17.5Dob

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Posted 05 March 2017 - 12:56 PM

Very nice with perfect star colors. waytogo.gif


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#10 jakob1234

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Posted 05 March 2017 - 01:32 PM

Beautiful image!


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#11 Maurice Toet

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Posted 05 March 2017 - 02:42 PM

Thank you for your comments. The Epsilon keeps surprising me; the image holds more details than I suspected.

 

Would you consider getting a few shorter exposures to help with the center core detail?

 

I don't think there's much more to gain, do you? A longer focal length would help to fill in more details, though. Or maybe an H-alpha blend to bring out the emission nebulas. 



#12 Emanuel

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Posted 05 March 2017 - 05:41 PM

Awesome job Maurice. Thanks for sharing smile.gif


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#13 james7ca

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Posted 05 March 2017 - 09:38 PM

Thank you for your comments. The Epsilon keeps surprising me; the image holds more details than I suspected.

 

Would you consider getting a few shorter exposures to help with the center core detail?

 

I don't think there's much more to gain, do you? A longer focal length would help to fill in more details, though. Or maybe an H-alpha blend to bring out the emission nebulas. 

The largest part of the core is more than fine, but I'm talking about the very center of the core, which seems to be almost featureless. You may already have data for that, maybe a tweak in the processing would add some tone to that area. In fact, it is so minor that it could come down to a question of opinion, that being would it look best to have the core very, very bright (almost featureless) or with slightly more density.

 

In any case, it's a very fine image as it stands.


Edited by james7ca, 05 March 2017 - 09:51 PM.

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#14 jambroseus

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Posted 07 March 2017 - 09:35 AM

Love it! Color, contrast and resolution is great, don't change a thing!

 

John


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#15 Maurice Toet

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Posted 07 March 2017 - 02:38 PM

Thanks for the clarification, james7ca. I've just checked the raw data, but the core is already blown out in the linear file. Therefore I think I'll leave it as it is ;-)

 

@jambroseus, also thanks for your comment. Glad you like it. 



#16 skycamper

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Posted 07 March 2017 - 05:42 PM

Insane image Maurice,  on the image in your provided link just to the lower left of the main M106 there are tiny dots clustered there and pretty much thoughout your image that border on "not star like".......are these tiny galaxies that are more distant?  I guess I could do more resarch but im working right now and cant wait to know.   LOL......my favorite area of the sky is this right here.   I'll be following this thread tonight!!  Ive not seen an image this deep on this subject especially with NGC4217 as part of it.

Abraham

Portland OR USA


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#17 Maurice Toet

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Posted 08 March 2017 - 03:59 AM

Thanks skycamper. Indeed, lots of galaxies can be seen in this image. There are, however, even deeper images of this area of the sky. An excellent example (captured with a CCD camera) is this one by Fabian Neyer (featured on APOD on 16 January 2016). He's very good at extraction faint details out of his data. In fact, that's one of his goals in pursuing signs of activity between galaxies (intergalactic structures, stellar tidal streams).    


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#18 aacc66

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Posted 08 March 2017 - 11:38 PM

Excellent image.  Thanks for sharing.  waytogo.gif

 

Alvaro

 


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#19 skycamper

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Posted 14 March 2017 - 12:41 AM

Maurice,

I was flipping between your image and the Fabians image and trying to see how similar they are and what could be seen.  Then I'd flip to my image and thought maybe Mickey mouse was taking it.  LOL.   Really stunning image,  Could explore your photos for awhile!  I'd really like to see NGC4217 at F10 in a larger scope but have only seen that one other time.

 

Not exactly a Widefield target!! 


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#20 kkennardis

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Posted 14 March 2017 - 02:00 PM

That image is superb, well done.  There is a lot going on in that image, thanks for sharing.


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#21 jhayes_tucson

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Posted 14 March 2017 - 05:02 PM

Wow.  Very well done!

 

John


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#22 Ron359

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Posted 16 March 2017 - 11:22 AM

Outstanding image!   What do you use for processing?   


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#23 Maurice Toet

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Posted 16 March 2017 - 04:07 PM

Thanks again. I use PixInsight for calibration / pre-processing. Post-processing is done in Photoshop CC. 



#24 jimegger

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Posted 16 March 2017 - 10:24 PM

Excellent image - lots of neat galaxies in there and sharp too !




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