NGC 253 Luminance - 3 hours

[John K]

Hi everyone,

Whilst every Victorian ASV member must be at Vic South, there were a couple of us at LMDSS in Heathcote this weekend.

Luminance channel of NGC 253 taken on Oct 29, 2016 from Heathcote Victoria with a 12.5" f/5 telescope and a Zwo ASI 174mm cooled camera. 60 x 3 minute exposures giving a total exposure of 180 minutes (3 hours). 30 equivalent Darks and Flats. Captured with MaximDL and proceed with Deep Sky Stacker and Photoshop CS3.

High Res version here:

https://www.flickr.com/photos/johnkazanas/30018360373/in/dateposted-public/lightbox/

Reasonably happy so far but would be nice to also add RGB data.

Clear skies.

John K.

[Mighty_oz]

Great shot, this is just the camera no ha filter ?
How dark is Lmdss nowdays ?

[Regulus]

That's an excellent return on your time John, and RGB would make a killer image.
Really impressive.

Trevor

[Peter Ward]

Not bad, not bad at all.

But it needs better/wider framing....looks too "letter-boxed" IMHO.

Nice depth, and good res.

Stick with it :thumbsup:

[Atmos]

That is some nice looking luminance! Looking forward to the RGB version :)

[John K]

Thanks Colin.



Thanks Peter. The 174mm has a small chip so a tough one to frame without the box look with this object.



Thanks Tervor - let's see what this crazy weather does next new moon!



No Ha filter. The ASV's LMDSS site in Heathcote is excellent given it's only 1.5 hours North of Melbourne. I guess it also helps with NGC253 being really high up.

[Placidus]

Very nice indeed.

We don't mind the tight framing - it's all there - but one way to get round tight framing is to do a mosaic. If you bolt the camera on the right way (so that the main galaxy is at a rakish but not impertient angle) it might need only be a two panel mosaic. The main galaxy gets data from all frames, and the edges get data from only half of them. (We have the same problem with NGC 55).

[multiweb]

Awesome shot John. Very sharp. :thumbsup::thumbsup::thumbsup:

[SimmoW]

One day we will meet John! I keep missing you?

Lovely image this, real depth to it

[Shiraz]

Very nice work John - your experience with planetary is shining through with the high res processing.