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Old 14-09-2006, 07:20 AM
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iceman (Mike)
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Thumbs up Trapezium with the DMK

Hi all

Got up early this morning to image the moon and decided to have a go at the trap in Orion, since it was sitting up nice and high.

The seeing was quite good, I had some local tube currents but it's the best seeing i've had in about 6 weeks. Shame the moon was only at 25° alt.

Visually, using the 7mm Pentax, the 6 mains stars (A-F) were easily visible and separated, a testament to good collimation and good seeing.

I used the DMK21AF04 and the 2x barlow. No filters were used (straight monochrome). I'll go higher resolution next time and use the 3x or 5x barlows and see how wide we can split these puppies

The first image was taken at 1/15s @ 15fps with gain quite high. 50 frames were stacked. Mild wavelets and no other processing.

The second image was taken at 1/2s exposures with gain quite high. 20 frames were stacked. Mild wavelets in registax and curves stretched in photoshop to bring out some of the fainter stars (and obviously some noise).

The G and H components are *just* visible in the second image. With a slightly longer exposure (and more accurate tracking) i'm sure they'd come out better, as I'd be able to stack more frames to reduce the noise.

You can see what my tracking is like in the 2nd image, as my DMK has a hot-pixel which danced around during stacking, which was obviously aligned on the trap.

Thanks for looking.
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  #2  
Old 14-09-2006, 08:12 AM
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Lester
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Good one Mike.
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  #3  
Old 14-09-2006, 08:36 AM
Dennis
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Spectacular results! Gee that DMK is a good camera, notwithstanding your skills and expertise that is!

Cheers

Dennis
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  #4  
Old 14-09-2006, 10:02 AM
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RB (Andrew)
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Well done Mike.

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  #5  
Old 14-09-2006, 12:18 PM
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EzyStyles (Eric)
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nice trap mike .
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  #6  
Old 14-09-2006, 12:20 PM
tornado33
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yes well done
Have you tried it in the core of 47 Tuc? Imagine how well it could resolve it.
Scott
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  #7  
Old 14-09-2006, 01:23 PM
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ving (David)
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yeah give that a try mike!!!
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Old 14-09-2006, 09:01 PM
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Rodstar (Rod)
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I am looking forward to "trapping" G and H visually when SDM #012 arrives....bit of a strain to see them in that second image, Mike....

Very impressive stuff, mate. Could you try some other OC's for comparison??
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  #9  
Old 14-09-2006, 10:04 PM
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davidpretorius
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top stuff mike
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  #10  
Old 15-09-2006, 06:54 AM
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iceman (Mike)
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Quote:
bit of a strain to see them in that second image, Mike....
I know, but there's a definite fuzz

Quote:
Could you try some other OC's for comparison??
Sure, but the problem is they'll be monochrome.. also, I'd need a small, tight OC because of the long (shortest) focal length of my imaging train.
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  #11  
Old 15-09-2006, 07:39 AM
gbeal
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Quote:
Originally Posted by iceman
Sure, but the problem is they'll be monochrome.. also, I'd need a small, tight OC because of the long (shortest) focal length of my imaging train.
Maybe Mike, but have a crack at the likes of Omega Cent, and/or 47 Tuc, you will be surprised I am sure.
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