Omega Centauri final

Post by **rcj** » Sun Jun 04, 2006 10:41 pm

Hi all,
Been quite a while since i last post. Here is one of the things i have been spending time on, Omega Centauri. This is actually an interesting image, in the sense that it has data obtained from both Singapore and Mersing. The luminance data was from Mersing, and was very nice to work with, little gradient issues, and the stars really have a pop-up effect. For CCD work, i guess, dark skies is important too. But the weather during the last mersing trip was bad enough, and the colour data obtained from there was plagued with passing clouds. So i have decided to gather more colour data from the Singapore end, all from the balcony. Total exposures would amount to about 4.5 hours cumulative, with 10 minutes sub exposure components.
As usual, the equipment configuration is the humble 3-inch refractor, on G11 mount.
Effort was also taken to make sure the cluster is not over processed, hence i tried not to give it too much of a saturated look. First time working on LRGB data in this way!

You can also view the image here on my website:
http://www.geocities.com/remuscj/imaged ... 30606a.jpg

Post by **VinSnr** » Sun Jun 04, 2006 10:58 pm

Nice! The CA of the scope added some blue and made the picture more interesting!

Post by **weixing** » Sun Jun 04, 2006 11:04 pm

Hi,
WOW!! Amazing image... pin-point stars!

By the way, is this taken using Nikon D70 DSLR or tri-colour imaging using your SBIG CCD??

Anyway, the small blue halo around the bright stars make the image looks very 3D.

Have a nice day.

Post by **rcj** » Sun Jun 04, 2006 11:10 pm

VinSnr, those are really blue stars... honest!

weixing, it is taken using CCD.

cataclysm · Post by **cataclysm** » Sun Jun 04, 2006 11:20 pm

This is a superb picture Remus. Well worth the efforts.

kamayok3 · Post by **kamayok3** » Mon Jun 05, 2006 8:57 am

Nice image! A+++++

Tommy

wucheeyiun · Post by **wucheeyiun** » Mon Jun 05, 2006 9:08 am

Wow, multiple colors and hue for pointed stars for Omega centuari, this image is like those taken by professional astrographers in observatories with absolute good seeing ...and you did this in Singapore? Try posting in Astromart and get some International critic.

Very Impressive amd mesmerising.

oxygn · Post by **oxygn** » Mon Jun 05, 2006 7:52 pm

just curious.... Wouldn't 4.5 hours of total exposure have blown the core??Pic seems otherwise. Excuse my ignorance.

Thanks

rlow · Post by **rlow** » Mon Jun 05, 2006 8:52 pm

Great image! The effect looks similar to what we have seen of Omega Centauri in the Portaball 12.5" at Mersing on 26 May 06!

Post by **weixing** » Mon Jun 05, 2006 8:54 pm

Hi,

just curious.... Wouldn't 4.5 hours of total exposure have blown the core??Pic seems otherwise. Excuse my ignorance.

It's not a single continuous 4.5 hours of exposure... it is 4.5 hours of cumulative exposure.

Have a nice day.