Horsehead & Flame Nebulae

[Mike]

Nice image Fay.

You can see from the raw that the focus was slightly off and that the wind was affecting your guiding, but an excellent image nonetheless.

[Fay]

Thanks a lot, Mike. I did have to discard a couple of images, but not bad considering it was such bad conditions.

[Tony G]

Good going Fay,
A lovely image again, something I'd be well happy with .
Keep up the good imaging and wrap up warm.

Tony G

PS camera batteries reordered, first lot lost in post.

[Fay]

Thanks Tony. No worries about batteries, they will arrive some day!

[MarkS]

Fay,

That single frame looks very good.  Were you imaging from somewhere dark?  Or using light pollution filter?  Or have you subtracted the light pollution from it?

Mark

[Carole]

A good example of the benefits of stacking.  Maybe could be used at a future "talk" on Astro-imaging.

Carole

[Daniel]

Fay, thanks for that, it is indeed a great example of stacking, no more lazy single exposures for me! was it the stacking that got rid of the grainyness, or was that some extra post processing?

Daniel
:O)

[Fay]

Yes I use a light pollution filter. Also I used an Ha filter.
The image becomes clearer when it's stretched & processed, I use Photoshop. Captured with AstroArt.

Going to try Mars tonight. Taking a chance the sky will be reasonable. If it is not, there is not so much equipment to put away, just using the webcam. 

[JohnP]

Fay, thanks for that, it is indeed a great example of stacking, no more lazy single exposures for me! was it the stacking that got rid of the grainyness, or was that some extra post processing?

Daniel - When you stack you increase the signal to Noise ration (SNR) by the square root of the number of images you stack. So if for example you stack 100 frames SNR improves by a factor of 10.

John.