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Old 10-03-2014, 06:46 PM
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rmuhlack (Richard)
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Does this qualify as "mega-data"? :)

Inspired by the heroic efforts of many here on the IIS forums (and particularly Rolf and Mike with their amazing collaborative effort on this target), I present here my first major project exceeding 20 hours. All captured with a humble DSLR and small 130mm f5 newtonian on a HEQ5 mount from my home in Strathalbyn SA (about 55km south-east of Adelaide).

Capture details:
Camera: modded Canon 1000D (Astrodon UVIR filter, no cooling)
Scope: 130mm f5 newtonian reflector
Mount: HEQ5 on the stock tripod
Exposure: 439 x 3min subs @ ISO1600 (just under 22 hours) across 7 nights in early March 2014. Ambient temps ranging from 12-18C
Software: Sequence Generator Pro, Pixinsight 1.8

Processed with the intent to reveal the polar jets and extended Halo of this magnificent galaxy as well as the abundant galactic cirrus throughout this region of our skies.

High resolution here: http://www.astrobin.com/full/82767/B/

What do you think? Has my attempt at "mega-data" been worth the effort? Any advice to improve the processing?

Comments and feedback appreciated
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Last edited by rmuhlack; 10-03-2014 at 08:09 PM.
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Old 10-03-2014, 07:11 PM
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Paul Haese
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Very nice looking and yes you have mega-ed up.
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Old 10-03-2014, 07:14 PM
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rmuhlack (Richard)
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Quote:
Originally Posted by Paul Haese View Post
Very nice looking and yes you have mega-ed up.
Thanks Paul. Im enjoying the new location here in Strath (although the skies probably aren't quite as dark as your place at Clayton).
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Old 10-03-2014, 07:15 PM
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alpal
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That's a top image - I don't see how it could be improved with more processing.
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Old 10-03-2014, 07:30 PM
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Regulus (Trevor)
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Gee Richard, I can't give feedback on the question you've asked and will leave that to the clever people who do this thing regularly.
What I can say is WOW, that's a nice photograph!!

Trevor
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Old 10-03-2014, 07:30 PM
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Quote:
Originally Posted by rmuhlack View Post
Thanks Paul. Im enjoying the new location here in Strath (although the skies probably aren't quite as dark as your place at Clayton).

Where about in Strath are you Richard? Perhaps some time you can come down on new moon. We have several guys that come down regularly on New moon for imaging if the sky is clear.
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Old 10-03-2014, 07:54 PM
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LewisM
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Words are futile.
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  #8  
Old 10-03-2014, 07:58 PM
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Such a great result with such humble equipment, amazing really!
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Old 10-03-2014, 08:31 PM
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rmuhlack (Richard)
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Quote:
Originally Posted by Paul Haese View Post
Where about in Strath are you Richard? Perhaps some time you can come down on new moon. We have several guys that come down regularly on New moon for imaging if the sky is clear.
have sent you a PM
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Old 10-03-2014, 08:43 PM
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RickS (Rick)
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Nice stuff, Richard. I think that qualifies as mega-data and a great effort from a DSLR. Great image!

Cheers,
Rick.
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  #11  
Old 10-03-2014, 09:55 PM
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Astroman (Andrew Wall)
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Thats a great image, love the stars and the FOV. Did you get your camera modded or was it bought like it? I am thinking of doing the same or similar to my 1100D. Excellent result.
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Old 10-03-2014, 10:00 PM
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rmuhlack (Richard)
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Thats a great image, love the stars and the FOV. Did you get your camera modded or was it bought like it? I am thinking of doing the same or similar to my 1100D. Excellent result.
Thanks. I modded the camera myself, by removing the anti alias and stock UV/IR filter and replacing with an Astrodon luminance filter.
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Old 10-03-2014, 10:11 PM
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strongmanmike (Michael)
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Well Richard it has been 6 years now since my 3 consecutive night 20hr effort under perfect dark skies on this galaxy through a 6" telescope and I remember when I was processing what was then unique looking data, the excitement was palpable...I imagine it was very similar in your case here too, so I feel your emotion . Having lots of data to work with (particularly if captured under truly dark skies) is indeed a pleasure to work with.

Congratulations of a fine image with modest equipment, I can see the full hockey stick shape but the galactic Cirrus is a bit hard to really make out but one good thing is that you don't look to have simply arbitrarily lassoed the hockey stick shape or used a heavy handed mask and worked on it separately, so it looks natural and to be real scaled data.

So...as many on here will remember I made a reasonable number of reprocessing efforts on my data set and started to annoy some on here with my regular reposts of Centaurus A's ...but in the end the final finished product (4 months later) was worth the many efforts..and the term doing a Sidonio or Sidononioing was coined for reprocessing Hey I can take it .

So, see if you can reveal the cirrus a bit better, perhaps up the contrast a bit and try processing a version just for the dust lane and (very) carefully blend it back in...

Again great effort and commendable result there

Mike
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Old 10-03-2014, 10:38 PM
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rmuhlack (Richard)
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Quote:
Originally Posted by strongmanmike View Post
Well Richard it has been 6 years now since my 3 consecutive night 20hr effort under perfect dark skies on this galaxy through a 6" telescope and I remember when I was processing what was then unique looking data, the excitement was palpable...I imagine it was very similar in your case here too, so I feel your emotion . Having lots of data to work with (particularly if captured under truly dark skies) is indeed a pleasure to work with.

Congratulations of a fine image with modest equipment, I can see the full hockey stick shape but the galactic Cirrus is a bit hard to really make out but one good thing is that you don't look to have simply arbitrarily lassoed the hockey stick shape or used a heavy handed mask and worked on it separately, so it looks natural and to be real scaled data.

So...as many on here will remember I made a reasonable number of reprocessing efforts on my data set and started to annoy some on here with my regular reposts of Centaurus A's ...but in the end the final finished product (4 months later) was worth the many efforts..and the term doing a Sidonio or Sidononioing was coined for reprocessing Hey I can take it .

So, see if you can reveal the cirrus a bit better, perhaps up the contrast a bit and try processing a version just for the dust lane and (very) carefully blend it back in...

Again great effort and commendable result there

Mike
Thanks Mike. It has been a bit of a rollacoster last week, as I (in the process of acquiring this image data) have also been testing and refining my automation software (Sequence Generator Pro) - so testing out unsupervised plate solving, auto focus and auto-meridian flips. I lost quite a bit of data due to equipment issues, but very excited to still have cracked the "20 hour" barrier.

Bringing out the galactic cirrus has been interesting. Using your image and Rolf's image as references, I can easily see the galactic cirrus in my data with an extreme stretch. However - i guess due to the fact that my camera is operating at > ambient temps - there is a LOT of noise when I do this. I simply cant reproduce the smooth result that you had with such an extreme stretch, but i guess that is in part due to the difference in capability of the equipment. Given the modest nature of my gear i am very happy with the result, but will continue to refine as you have suggested. I admit that after viewing the image on 4 different screens (two desktop monitors, a laptop and my phone) the "galactic cirrus" is indeed hard to see. Pixinsight does not allow one to selectively lasso a region of the image, which i think preserves the integrity of the data. Nevertheless you've given me something to work towards.

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  #15  
Old 10-03-2014, 11:31 PM
DJT (David)
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Top image Richard. No improvement tips I could possibly offer.
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Old 10-03-2014, 11:50 PM
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A stunning image Richard. Really nice.

Greg.
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  #17  
Old 10-03-2014, 11:56 PM
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h0ughy (David)
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fantastic effort and result - well done
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  #18  
Old 11-03-2014, 08:32 AM
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multiweb (Marc)
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Nice one Richard. Very deep field.
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  #19  
Old 11-03-2014, 09:16 AM
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A wonderful result Richard !
Proof that great images can be had with modest gear too.

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Old 11-03-2014, 03:27 PM
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Great result there Richard. Your perseverance has really paid off in an excellent image.
Allan
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