SINGLE 20 sec exposure VS 40 subs stacked :)

[LewisM]

This is a SINGLE, unstacked 20 sec exposure at ISO 1250 of M 42, using a Vixen VC200L at f/6.3 and a Canon 5DMkII (unmodified).

More clarity and colour than stacking the other 40 subs :) Hmmmmm...

Might whack it into MaxIm DL and see what happens.

EDIT: second picture is 40 subs of 20" / ISO 1250 stacked, with someprocessing. A bit of a difference! (if only the focus was spot on!)

Shame it's a jpeg... looks MUCH better in PS than the compressed version here :(

[leon]

Not a bad effort for a single exposure, yep, more of the same will certainly change the outcome.

:Leon

[Larryp]

Quite a bit of detail for 20 secs!

[LewisM]

Only process I did besides touching contrast a little was to use the Custom filter in CS5 (it's a stock filter). Never tried it before and it did sharpen things up, but also gave some artefacts I don't like. Still, it's OK I guess for one shot!

Working on the stack now - 40 images. End result is mono almost, so goign to have fun getting the colour back some!

[LewisM]

Oh yeah, this Vixen blows my mind! I know this is a finicky scope to use (like an RC), but the results will be worth it. Got list of things to sort out yet, and I am NOT moving on past my current 3 targets till they are resolved (M 42, M 8 and NGC 253).

So, guidescope should be finalised next week (been waiting on Orion shipments), then we should crack the trail barrier...

[Vasya Pupkin]

How ugly is my M42 after THIS! Definitely, light pollution is a terrible problem!
Photo: 35*1sec, ISO1000, Sumsung NV3, Moscow.

[LewisM]

Vasya, I think you need to get on the roof of the Ostankino Tower and try... no, knowing Moscow, there will still be enough light pollution to ruin any photo :) Those who say Las Vegas or Paris are the cities of lights has never been to regular suburban Moscow... LOL


I believe somewhere near Domodedovo might be darker? Or maybe a train trip to Yaroslavl?

[Merlin66]

Lewis,
have you done similar but at say 200ISO?

[LewisM]

When I have my guide scope all settled, I will - I think no lower than ISO 400 though.

[Merlin66]

I find the 200 iso on the 1000D to be pretty good. The higher iso is just an internal camera gain amplification of the RAW data....