NGC346-419 in Tucana

[TrevorW]

NGC 346 Cluster associated with nebulosity in Tucana
The brightest star-forming region in the neighbouring Small Magellanic Cloud galaxy, The light, wind and heat given off by massive stars have dispersed the glowing gas within and around this star cluster, forming a surrounding wispy nebular structure that looks like a cobweb.

Right Ascension: 0 : 59.1 (hours : minutes)
Declination: -72 : 11 (degrees : minutes)
Apparent Magnitude: 10.3
Apparent Diameter: 14. (arc minutes)

Clusters NGC 419 and NGC 416 are located in the 'Wing' of the SMC, and represent two of the brightest and richest members of the SMC. The present investigation is concerned with the construction of color-magnitude diagrams (CMDs) for both clusters. The CMDs are analysed, taking into account the global features, a photometric estimate of the cluster metallicities, and the ages and the distance-reddening problem. It is found that NGC 416 is about 1.5 Gyr older than NGC 419. The clusters' absolute ages are 2.5 + or - 0.7 Gyr and 1.2 + or - 0.5 Gyr, respectively. Integrated photometry is feasible to very low apparent magnitudes, and, for this reason, any calibration of integrated photometric indices versus age and/or metallicity, which can be performed in the Magellanic Clouds, is of fundamental importance in the study of more distant unresolved galaxies.


The globular star cluster NGC 419 in the Small Magellanic Cloud, in the constellation Tucana, has a diameter of 2.4' and an apparent magnitude of +10.00 mag.
The globular cluster NGC 419 was discovered on the 2 September 1826 by the Scottish astronomer James Dunlop.

Position (J2000): RA 01h08m19.45s, Dec -72°53'02.5"


Image captured 19/10/2011 9 x 10 minute frames GSO 8”RC QHY8 OSC CCD

[RickS (Rick)]

Nice image of an interesting area, Trevor!

[Stevec35 (Steve)]

Nice one Trevor. Good colour.

Cheers

Steve

[TrevorW]

Thanks Rick and Steve

bit of a gradient in there didn't do any flats which hasn't helped used GradX but still not happy, target needs bigger aperture and more exposure to do it justice

[bmitchell82 (Brendan)]

hey trev, i dunno if you have used a filter or something but the back ground looks like its that hammer coat paint or something. I know your contending with the light pollution though so that might be the issue?

[TrevorW]

Trying to work out a blotchey background

Cheers

[atalas]

Hi Trev

The repro has a much better background and color balance...I think I see a slight red bias in the background but still quite nice....well done.

[gregbradley]

A lot of potential there Trev.

I ran Gradient Xterm on it again and the blue background went and it looked very good.

Lasso the 2 main objects (hold down the shift key when adding a 2nd selection with the lasso tool). Now select/inverse.

Gradient Xterminator medium and high strength. Check the balance background colours box.

Worked perfectly.

I also ran another more complex gradient correction routine in PS and it gave the same result.

Greg.

[TrevorW]

Thanks Louie and Greg. I tried your suggestion Greg

[Ross G]

A nice photo Trevor.

I like the colour.

Ross.

[Lester]

Very nice view Trevor. The first I found too blue, the others are good.

Can you comments on the RC 8" for visual use on DSO objects? I have heard they give low contrast views, and are not pushed as a visual telescope.
Thanks.

[TrevorW]

Thanks for looking Lester

[gregbradley]

Originally Posted by TrevorW

Thanks Louie and Greg. I tried your suggestion Greg

That turned out nicely.

Greg.