NGC 3372, 8 minutes

[LewisM]

Yes, a MASSIVE light grabbing SINGLE 8 minute sub.

I have 4 more I can lay on top to stack, but seems pretty darned deep and showy as a single 8 min sub. NO edit, apart from resizing. Difference to usual - I used a Skyglow filter :)

Canon 5D MkII unmodded, uncooled.

Making my webpage now for the fullsize ones ;)

http://imageshack.us/a/img96/8113/etacarinae2.png

[alistairsam]

Pretty good Lewis, which LP filter are you using and where was this imaged from, which scope?
should be able to bring out very good details after processing

Cheers

[multiweb]

Very nice. Coming along well. :thumbsup:

[allan gould]

The designation is ngc3372 not ngc1365

[LewisM]

Yeah, I know... Went to beddy-by at 4 am and got up at 6 am... brain cold, foggy, and silly

I shot 1365 though too last night :) I'll process that next.

[cometcatcher]

Which filter and scope Lewis?

[Larryp]

Nice image, Lewis!

[LewisM]

It's the SW ED100 I currently have for sale (potentially sold). Filter is a garden variety Orion Skyglow, 2" VISUAL filter (not photographic). A little too much green cast, but fixable. Seems the right wavelngth for the crud light around here.

Made the Horsehead pop out in red cloud on the first image - no need to fiddle :)

[cometcatcher]

Thanks. :)

[LewisM]

Here's the stack of 4, processed with flats and darks, then thrown into StarTools and fiddled with.

Some difference... just a little bit :eyepop:

http://img141.imageshack.us/img141/3690/eca4001.png

[Larryp]

Looks really nice, Lewis:)

[cometcatcher]

Looks much better.

[MrB]

Nice work Lewis, I think I prefer the original single frame tho.
Something happened to the stars in the stack and overall it looks as tho the register wasn't quite right.

[LewisM]

On zoom, I agree Simon. I have since taken each of the CR2's and tweaked them in PS 5.1 RAW tools, and will try a restack - the first stack by DSS revealed more like airy discs for stars than stars,, and visible field rotation patterns (and thta is set at a 50% detection rate to minimise sampling noise or faint stars).

The first single sub at top was taken with Canon long exposure noise reduction OFF (CMOS showing 24°). If I use LE noise reduction ON with the Canon, there is no need whatsoever to use darks (and usually not even flats!) in DSS. Just takes twice as long, meaning a decent stack of Eta Carinae complex is probably 3 or 4 nights work. The longer between sub wait is frustrating, but in my opinion after this trial, WORTH it, as I honestly believe Canon does a better dark reduction than DSS does.

[alpal]

The latest one looks very nice.
I'd love to see a full size 1920 x 1080 version.

cheers
Allan

[jjjnettie]

That single sub is a ripper.
I wonder if something had fogged up in the latter subs?

[Ross G]

A very good photo Lewis.

Sharp and nice detail.

Good colours too.

Ross.