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Old 27-11-2014, 07:54 PM
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John Hothersall
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John Hothersall is offline
 
Join Date: Apr 2007
Location: Thornlands, Brisbane.
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Terzan 6+1 in Scorpius star cloud

SPX350 F4.5, ST10XME, Astrodon filters.

A quick couple of faint globular images deep in Scopius near M6. IR742nm filter allows a deeper view giving many more fainter stars by adding IR to Red and using IR as Luminance. Terzan 6 was involved with hydrogen background so I added a quick hour of Ha blended with IR+Red as Luminance.

A comparison of Red vs IR742 filters is interesting to look at, sometimes when seeing is good IR filter will give very tiny stars compared with Red some stars only visible in IR.

Terzan 6 mag 13.8, is just below centre right in first image and is quite small and is 4,200 light years from the galactic core.
Terzan1 mag 15.9.

Terzan1-IRRGB-5x5mins each
Terzan6-IRRGB-5x5min each with 6x10min Ha.


Thanks, John.
Attached Thumbnails
Click for full-size image (terzan6-ha  ir rgb-cs3xx.jpg)
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Click for full-size image (terzan6-closeup-ir+rgb.jpg)
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Click for full-size image (terzan1-ir ir+rgb-cs3x.jpg)
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Click for full-size image (terzan1-closeup.jpg)
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Click for full-size image (terzan6-red+ir comparison.jpg)
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Click for full-size image (terzan1-red+ir comparison.jpg)
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Last edited by John Hothersall; 28-11-2014 at 01:40 PM.
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