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  #1  
Old 30-06-2012, 05:56 PM
John Hothersall's Avatar
John Hothersall
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Terzan 2 faint globular in Scorpius

SPX350 F4.5, ATK-16HR, Baader RGB Astronomik IR742nm filters.

This Terzan is North of Scorpius Tail and a shade south of star 45 Oph. In the dust this would look interesting in IR to see through the dust for better contrast. Notice the star a touch right of the cluster in IR is very bright compared with RGB. If you flick from one image to the other you can see the IR stars switch on and off as the dust disappears.

RGB=8x3min each. IR=8x5mins.

Thanks, John,.
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  #2  
Old 30-06-2012, 07:58 PM
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spacezebra (Petra)
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Hi John

Your captures are brilliant! Im a HUGE fan of Globs - so yes, very good to see.

Cheers Petra d.
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  #3  
Old 01-07-2012, 07:48 AM
stevous67 (Steve M)
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You're doing some neat tricky dicky stuff John. Well done. Just have watch out though, your scope may explode if you push it any harder!

Steve
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  #4  
Old 01-07-2012, 12:22 PM
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multiweb (Marc)
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Very cool shots. What brand of IR filter do you use to achieve that effect?
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  #5  
Old 01-07-2012, 12:24 PM
Dennis
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Nice work John. Blinking the non-IR and IR frames is very interesting and educational in terms of the additional details present in the IR frame.

Cheers

Dennis
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  #6  
Old 01-07-2012, 02:19 PM
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John Hothersall
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Thanks everyone, the IR brand Marc is Astronomik 742nm from 742nm till the sensor cuts off at 1050nm. It is used for planetary but works well in deep space in Sag and Sco dust but needs to be refocused compared to the Baader RGB filters but my OAG can still guide on the stars.

John.
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  #7  
Old 01-07-2012, 07:05 PM
Stevec35 (Steve)
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Nicely done John. IR always seems to work great with these obscured globulars.

Cheers

Steve
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  #8  
Old 02-07-2012, 04:47 AM
Ross G
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Another great capture John.

The difference is very apparent.

Ross.
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