Ngc 55

[markas (Mark)]

NGC 55 is a Magellanic type galaxy in Sculptor. It is about 7 Mly distant, about half way between the Milky Way and the Sculptor galaxy group. It is thought to be gravitationally bound to NGC 300.

Shot recently on two cloud interrupted nights; total exposure 2 hours 30 min - 80 min L, 70 min RGB. FOV approx 53 x 40 arcmin.
RH200/Moravian C1X26000, resolution 1.3"/px.


Mark

[alpal]

Originally Posted by markas

NGC 55 is a Magellanic type galaxy in Sculptor. It is about 7 Mly distant, about half way between the Milky Way and the Sculptor galaxy group. It is thought to be gravitationally bound to NGC 300.

Shot recently on two cloud interrupted nights; total exposure 2 hours 30 min - 80 min L, 70 min RGB. FOV approx 53 x 40 arcmin.
RH200/Moravian C1X26000, resolution 1.3"/px.


Mark

Hi Mark,
a very nice capture - you should be more than happy with that!
I think I would have made some slight adjustments to the processing:


increase the background levels up from the present 11 to 15 out of 255
to somewhere between 23 and 28.
That would have stopped the background being so dark and pulled out the galaxy halo more.
Also I would have increased the saturation a bit.

cheers
Allan

[strongmanmike (Michael)]

That's a very nice shot of this galaxy Mark

...it's aaaalmost galaxy seeeeason!

Mike

[markas (Mark)]

Thanks Mike and Allan.


Not a particularly attractive galaxy, but it's big, so it was a reasonable target for the RH200....


Allan, I appreciate the critique. Raising the sky background level doesn't really do much for the outer halo in this case. Even with the f/3 telescope, 80 minutes of L and 70 minutes total RGB is not enough exposure to give an adequate halo signal!



On the colour, there isn't a lot there, and again, more time is needed. I generally tend not to push saturation very hard - just personal preference, I guess.


Mark