View Full Version here: : Horsehead repro on a rainy nite
Geoff45
06-01-2011, 08:49 PM
Another rainy night in Sydney, so time for a repro on the image I took last weekend. I think I did a much better job this time but I really need a lot more luminosity data.
I wasn't game to put Alnitak into the frame, after the big reflection halo I got last time I tried the horsie.
Scope: William Optics 110 Apo
Camera: QSI 549
Guider: Starlight Xpress Loadstar
Mount: Losmandy GM8
Exposure:35 minutes each of RGB binned 2 x 2, 35 minutes luminosity binned 1 x 1.
strongmanmike
06-01-2011, 08:55 PM
At this size presentation, it looks pretty excellent Geoff, some good reflections there huh? and a couple of colour blodges (you could hide these pretty easily though)...but they don't really detract too much from the overall job you have done.
Very Nice
Mike
h0ughy
06-01-2011, 08:59 PM
love the result
richardo
07-01-2011, 01:46 AM
Looks like your 'rainy day' in payed off.
Nice repro!
Good colour balance and the reflection nebs turned out nicely.
Just judging from the smallish image published, maybe a bit more colour data as well as luminance. Looks to be some residual- mottling effects showing up from pushing the saturation in your colour channels.. [maybe jpg compression]
Refractors certainly handle Alnitak better than reflectors... no real drama that I can see here at all.
Rich
Geoff45
07-01-2011, 08:20 AM
Yes, certainly more data is needed. Always a bit of a tradeoff between pulling out detail and showing noise.
Geoff
multiweb
07-01-2011, 08:39 AM
Nice repro Geoff. It looks great. :thumbsup:
CoolhandJo
07-01-2011, 09:34 AM
Very nice indeed
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