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Old 06-January-2008, 09:45 PM
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iceman iceman is offline
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Default Horsehead with more data

The last clear night was on the 28th December, and while waiting for some other targets to rise higher, I thought I'd try and capture some more horsehead/flame data and try adding it to the data from the previous session on the 14th December.

I took 9 exposures @ 300s each (ISO800), to add to the previous 55 minutes of data. The exposures were calibrated with flats, however not darks as I used ICNR with the lights.

All frames aligned, rotated and added in ImagesPlus. Processing included DDP in ImagesPlus, followed by Photoshop for noise reduction, levels, curves, saturation etc.

All taken with the unmodded 350D on the ED80 with WO 0.8x II reducer/flattener. Guided using a 80mm f/5 refractor, DMK21AU04 and PHD guiding.

Compared to the previous attempt, I'm happy with how this one has turned out. It's a small improvement, but an improvement nonetheless. You can see that the extra data has allowed some extra stretching and some fainter nebulosity to be captured, as well as giving more depth in the star colours.

For an unmodded camera, I'm pleased with the result and that'll do me for the horsehead for this Orion season. It could still use more data to remove the blotchiness from the very faint nebulosity, but other targets are on the rise and it's time to move on

Next capture/processing challenge is to get off ICNR and go back to taking darks.. so much time is wasted on ICNR but the results are definitely better than what I achieve with separate darks.

Thanks for looking.
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File Type: jpg 20071228-newhorse-800px-low.jpg (95.3 KB, 74 views)
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Old 07-January-2008, 01:16 AM
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Mike,

Very nice update to your previous image of these nebulae. I do like how the nebulae look ghostly and darkish. Not a typical presentation.

--Andy
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Old 07-January-2008, 12:53 PM
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Bravo! Mike.

thanks for sharing
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Old 07-January-2008, 01:35 PM
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hi Mike,

very well done Mr. Planet!
you managed to work out the color distinction perfectly!
also detail are nice!
Mike, if you added some more hours, that image would stand out a one ofthe best DSLR of that region! still, it needs a bit more data for becoming real deep!
go for it!
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Old 07-January-2008, 02:52 PM
JAICOA JAICOA is offline
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Mike it's simply beautiful and a super fine shot with a unmoded 350 wow. There are always room for improvement and surely you are on the right track. looking to see moe on your next session. clear skies
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Old 07-January-2008, 07:41 PM
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Thanks guys.

Dietz, you are too kind! I've got a long way to go with DSO imaging, but i'm enjoying the journey and look forward to pushing my budget equipment to the limit!
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Old 16-January-2008, 06:28 AM
kvwood kvwood is offline
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Mike,
Great wide field image of this region!

Thanks for sharing,
Kent
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Old 16-January-2008, 10:50 AM
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Hi Mike!

Your work is awesome!

I really love this Astrophotography Section.

Thank you for sharing .

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Old 16-January-2008, 12:26 PM
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Fantastic. I am seriously contemplating relegating my DSI II to guiding and moving to a DSLR. It is a wonderful shot as it stands. Congratulations.

Kind regards
Matt
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