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Neowise Comet

By diehard4  
Neowise comet in the northwest sky over Faversham uk. I want to improve on my astrophotography and how improve on editing my images. This image has been stacked and edited so far.

Tags: Sky Portrait Colour Night photography Manipulated Stars Stacked Landscape and travel Night and low light comet neowise

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Comments


dark_lord Plus
16 2.6k 683 England
19 Jul 2020 10:22PM
It looks good enough to me, t least at the small size here.
How many images did ou stack.?
It's something I was going to try myself and I looked out just now to no avail. Tere are still a few days left to see it and hopefully there'll be some clear sky.
The last time I photographed a comet was Hale-Bopp in (I think) 1999.

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banehawi Plus
16 2.2k 4149 Canada
20 Jul 2020 12:17AM
Can you explain what you mean by "stacked"?
diehard4 7 5 United Kingdom
20 Jul 2020 4:20PM
Hi I stacked 10 photos of the same scene in lightroom to create one image. To make the detail come out of the photo and less noise out of the photo. It makes it more workable when editing an image. I do this alot with landscape image's.
DaveRyder Plus
6 4.4k 7 United Kingdom
20 Jul 2020 4:44PM
Nice image and I'd not change it greatly.
There are a number of Neowise shots being posted on here. For me the best have something else to add to the actual central point of interest - the comet. Take a look here - Portfolio

Astrophotography is quite a specialised area and I'd suggest an astronomy forum, with an astrophotography section, would perhaps yield more answers. This is where I looked when I had a telescope and was looking for information relevant to that area.
diehard4 7 5 United Kingdom
20 Jul 2020 4:55PM
Cool thank you 👍
banehawi Plus
16 2.2k 4149 Canada
20 Jul 2020 5:59PM
Thanks for getting back to explain stacking. A different approach for sure.
dudler Plus
16 1.2k 1679 England
20 Jul 2020 7:28PM
Effective.

I still don't quite get the stacking: do you mean you combined at different exposures? Or something else?
DaveRyder Plus
6 4.4k 7 United Kingdom
20 Jul 2020 9:12PM

Quote:Effective.

I still don't quite get the stacking: do you mean you combined at different exposures? Or something else?



John,

Stacking Software
diehard4 7 5 United Kingdom
20 Jul 2020 9:18PM
The different exposure is bracketing which I suppose is HDR and stacking is the same image taken over and over then merged together. I think lol. Stacking hope this helps how to stack photos.
banehawi Plus
16 2.2k 4149 Canada
20 Jul 2020 10:08PM
This type of stacking is called super resolution and requires multiple in camera exposures, which I don't believe you've done?

It depends on slight camera movement between successive frames of the same subject wit the same exposure to remove noise and obtaining "super detail", and is based on Hasselblads approach to super resolution images.

Its not possible with one image shot at such a slow speed and processed as if it was separate images from the camera, as all images would be identical, preventing the process from working,as far as I can tell.


W
dudler Plus
16 1.2k 1679 England
21 Jul 2020 9:51AM
It wasn't so much the how of stacking as the why that interested me.

To reduce noise? To increase dynamic range? To improve resolution, as Willie says?
diehard4 7 5 United Kingdom
21 Jul 2020 11:27AM
Ok I understand. I've just got into astro photography and ive watching alot of astro stacking videos. So I thought I would give it a go. Also as the olympus em5 is very noisy in low light. So stacking was the way to go.now looking at the image I can see that I haven't quite nailed it.
dudler Plus
16 1.2k 1679 England
21 Jul 2020 3:34PM
OK, I understand.

Smaller sensors are less good at high ISO, so it'll pay dividends. My impression is that all forms of stacking need a little bit of practice (I've tried focus stacking, with mixed results).

It'll be worth pursuing the particular approach to stacking to reduce noise. I am intrigued that you're using a Cosina 28mm lens, presumably on an adaptor. It may be easier to get really good results with a native MFT lens, ideally a fixed focal length one. Cosina optics were always cheap and cheerful, and MFT makes considerable demands on lens quality.
diehard4 7 5 United Kingdom
21 Jul 2020 4:44PM
I do agree I will be investing in better lenses in the future. The lens was my uncles that I borrow from him. I suppose it was a cheaper way than buying a mft lens. Thanks for the critques.
dudler Plus
16 1.2k 1679 England
21 Jul 2020 8:52PM
Does that mean that you don't have any lenses actually designed for the Olympus (or Lumix - the two brands share the MFT mount)? If not, you are really missing out on a lot of ease of operation.

Thinking further, there may be a range of other technical issues around sky photographs that are worth exploring, though I'm not an expert in the area.

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