NGC4631 Whale Galaxy

[Oily]

Another one I took the other night,taking advantage of the clear skies!!Thanks go to Mark for cleaning the image.I've got a few bits of dust on my sensor

ZEQ25GT,200PDS,Canon 350 D modified fitted with Astronomik CLS filter,ISO1600,approx an hour of data.

[WaveSoarer]

That's great. I have this pair on my camera ready to download and process. A nice pair of really interesting galaxies. Did any of your subs have satellite trails? This area seems to be the M25 (motorway) for satellites.

[swag72]

I think there's some good detail in this, but you've clipped the background too far. You can see this with halo's around the galaxies and brighter stars. I think a reprocess really keeping an eye on the histogram will really help to change this from a good image to an even better image

Hope that helps.

[Oily]

That's great. I have this pair on my camera ready to download and process. A nice pair of really interesting galaxies. Did any of your subs have satellite trails? This area seems to be the M25 (motorway) for satellites.

Thanks WaveSoarer,can't recall seeing any sat trails in my subs,mind you I was sat inside just glancing once in a while at team viewer on the laptop

I think there's some good detail in this, but you've clipped the background too far. You can see this with halo's around the galaxies and brighter stars. I think a reprocess really keeping an eye on the histogram will really help to change this from a good image to an even better image

Hope that helps.

Thanks Sara,Mark(Quatermass) processed it and he says I have a lot of dust etc on my sensor so maybe that's why ?

[swag72]

I think that there are a few different ways to tackle dust on the sensor - The best way being with flats. Failing that an artificial flat works well, a particularly well written tutorial is here http://www.corius.net/?page_id=395

[Oily]

I think we are talking more than what flats can sort out Sara,they're visible on the screen when taking subs

[swag72]

That's the Big Mans way of telling you it's time for a spring clean

[sulaco]

great image, this is my next target.