Ngc 1433

[Flugel88]

This is the first real image i've managed to squeeze out of my GSO RC14.
Due to a multitude of problems with the scope and the gear i'm trying to work with it.

NGC 1433 is a really cool Seyfert Galaxy with an intense ionizing maelstrom at its centre though not visible with my washed out luminescence data.

Included Hubbles version of the central nuclei.

I have some 20min RGB subs that i have been trying to compile but it looks terrible. Bad vignetting wild gradients and colour noise is what i end up with to embarrassing to share:ashamed: and to late in the year to get more data.

about 7 hours of luminescence data
Mag 9.9
size is 6.1" x 5.7"
at a ridiculous 0.39"/Pixel

[Geoff45]

Very sharp Michael. You mention bad vignetting. Do you take flats? They make a huge difference.
Geoff

[strongmanmike]

Looks really good Mike lovely and crisp...and I can't believe how much it looks like NGC 1512 (http://www.pbase.com/strongmanmike2002/image/153237509/original) in Horologium, I thought it was at first :eyepop:

Mike

[Regulus]

This is a lovely clear and detailed image Michael, and it's very pleasant to look at.

Trevor

[Flugel88]

Thanks for the comments guys i was pleasantly surprised by how crisp the galaxy turned out after processing.

Geoff
Iforgot to mention i did take darks/flats and bias worked well for my luminescence data but i still get some bad colour noise and gradients with my RGB.
I think now it might be more to do with the way im stacking and per-processing with CCD stack auto stretching DDP.
I will try my best later to clean it up and produce a colour image.

Mike
Your NGC 1512 does look a little similar closeup though that top arm in your image is massive! spiraling what looks like a huge distance from the core.
BTY I really would like to be able to get the level of vibrance from my galaxy attempts as yours well balanced very nice. :thumbsup:

[Placidus]

Michael, that is a delight! Would like to see it closer up.

Best,
MnT

[Placidus]

Regarding dodgy flats - we were plagued by inadequate flats for years. Tried sky flats, t-shirt flats, light-box flats, all to no avail. The flats actually made the image worse.

So we forked out for a giant electroluminescent panel (expensive for a 20"), and never looked back.

[RickS]

Great luminance, Michael, and a lovely little galaxy.

Crappy looking RGB data is not unusual for a dim target, at least in my experience ;) Hit it with your favourite gradient removal tool and a heavy denoise and it should be usable. Some people go as far as deliberately blurring the RGB data.

Cheers,
Rick.

[Paul Haese]

That is an impressive result Michael with that image scale. Almost double what is considered "safe" but the result looks sharp and has plenty of detail.