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Old 10-11-2013, 08:15 PM
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John Hothersall
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NGC7424 Grus Galaxy

SPX350 F4.5, ST10XME, Astrodon filters.

This is a very faint galaxy and needed a lot of stretching out but the addition if Ha has added a little extra. Not as good as RickS rather excellent longer fl image but the outer faint parts are visible and considering I have streetlights behind me I am pleased. The Galaxy is 37 mil lyrs away and not part of any group.

L-5hrs
RGB-45min binx2
Ha-90m.

Thanks, John.
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Old 10-11-2013, 08:32 PM
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Great shot John. I just finished processing an image of this also. You are right it is very faint. Really a dark site target.

You've done very well there.

Greg.
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Old 10-11-2013, 08:55 PM
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RickS (Rick)
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John,

I wouldn't have thought it possible to capture that nicely without heading to a dark site. Very well done!

Cheers,
Rick.
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Old 10-11-2013, 09:07 PM
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strongmanmike (Michael)
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Nice work John, came out pretty well I also used Ha on this one too and I think it helps bring out the HII better in this galaxy..may sound obvious but it doesn't help with all galaxies eg did little for my latest galaxy in Horologium.

Mike
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Old 10-11-2013, 09:36 PM
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astroron (Ron)
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Nice image John.
This galaxy has bee an APOD January 8 this year.
http://apod.nasa.gov/apod/ap130108.html
Cheers
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  #6  
Old 10-11-2013, 09:37 PM
Dennis
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A brave effort that has turned out really nice, despite the almost daylight conditions of Brisbane’s night lighting scheme!

Cheers

Dennis
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Old 10-11-2013, 09:57 PM
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A great result John.... I scouted this one the other night, only a very dim core appeared on a binned image, so I put it on the backburner for another time.... You did very well....
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Old 13-11-2013, 08:59 PM
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Shiraz (Ray)
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excellent result John - difficult object under perfect conditions, near impossible with streetlights, so you did well.
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Old 13-11-2013, 11:24 PM
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Octane (Humayun)
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What a beautiful galaxy.

Great work.

H
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  #10  
Old 15-11-2013, 06:08 AM
stevous67 (Steve M)
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Great work John.

Steve
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  #11  
Old 15-11-2013, 11:12 AM
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Nice image John. Good detail too.
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  #12  
Old 15-11-2013, 11:18 AM
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A good job - did you use an anti-light pollution filter in front
of all the other filters?
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  #13  
Old 15-11-2013, 08:47 PM
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John Hothersall
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Thanks for the comments.

Quote:
Originally Posted by alpal View Post
A good job - did you use an anti-light pollution filter in front
of all the other filters?
Although I am in the suburbs I am not too deep in the suburbs but do have 2 streetlights about 15 meters away in the West one orange and one low intensity white. My Astrodon RGB filters have a spectral gap in the green blocking out 589nm sodium streetlights which helps with mild light pollution. I think Baader green filters have a similar gap.

John.
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  #14  
Old 16-11-2013, 09:55 AM
Ross G
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Great looking galaxy photo John.

Ross.
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