NGC235 - 4 hours worth

[Raymond]

Excellant resolutions and details. Worth the time !

[gaa_ian (Ian)]

Yep ...now my desktop too
Superceded the hubble deep field I had there !

[h0ughy (David)]

wow, flaming fantastic!!! the detail is awesome

[cventer]

Thanks for the Kind words everyone. I will post a reprocessed one once I have have some time to do a dark subtraction and take some flats.....


Best Regards
Chris Venter

[seeker372011 (Narayan)]

Originally Posted by cventer

this over last 2 nights in Melbourne.....

with CFW8A, Astrodon Tru Balance Filters

Chris, sorry can you explain what all this means?Others may know know but I must admit I dont

[cventer]

Which parts did you want explained ?

The CFW8A stands for Color Filter Wheel. 8A is the Model number from SBIG. It comes standard with a set of custom scientific Red, Green , Blue and Clear filters. I replaced those stock ones with a set of filter from Don Goldman called Astrodon Filters. These filters allow you to image all colors , Red, Green and Blue with the same length of time exposures and you get near perfect color balance without having to stuff around with different color combination ratios.

The AO7 is an adaptive optics device that moves a small mirror in front of the light path at up to 10 times a second to keep a star perfectly centred.

These links tell you about dark frames and flat frames
http://www.ghg.net/akelly/process.htm#9
http://www.starizona.com/ccd/procbasiccal.htm
http://www.starizona.com/ccd/procadvcal.htm

Feel free to ask any other questions....

Best Regards
Chris Venter

[seeker372011 (Narayan)]

thanks very much, I just didnt know what Astrodon was all about

[iceman (Mike)]

Incredible image Chris, is there a full-res version available?

Regarding darks and flats, don't forget there's a great article by our own Eddie Trimarchi, here on IceInSpace: http://www.iceinspace.com.au/index.p...63,211,0,0,1,0

[EddieT (Eddie)]

Wow, that is a seriously awesome image of 253. The Celestron 9.25 is capable of producing some excellent images judging from what I've seen so far around the traps.

Well done Chris!

[cventer]

Evening all,

Tonight I took some flats and then redid the processing with flats and dark subtraction.

This is the new image attached, plus a higher res version for those interested.

http://www.dslrfocus.com/NGC253-C925Hi-Res.jpg

Best Regards
Chris Venter

[[1ponders] (Paul)]

Brilliant Chris. New desktop image Any one here know how to automatically cycle desktop images. I've got so many from this site now I don't know which one to use

[atalas]

Louie

[iceman (Mike)]

Stunning Chris, even better than the first. Amazing detail and one of the best shots of 253 i've seen.

[fringe_dweller]

mmmmm beautiful round stars - thats what i love about the high end CCD's the most - super job Chris - go the southerners
Kearn