Olympus UK E-System User Group
Olympus UK E-System User Group

Join our unique resource for Olympus Four Thirds E-System DSLR and Pen and OM-D Micro Four Thirds photographers. Show your images via our free e-group photo gallery. Please read the e-group.uk.net forum terms and conditions before posting for the first time. Above all, welcome!


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Looking for improvement This is the e-group critique board. If you post a picture here it will be assumed that you are looking for comprehensive technical feedback - both good and bad, but always respectful. Only post pictures here if you can deal with potentially negative constructive criticism. Anyone is qualified to comment and post feedback, and everyone is encouraged to do so. NB: "Looking for Improvement" is the place to post any pictures you would like advice on improving, no matter how bad you might think they are.

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  #16  
Old 7th February 2019
MikeOxon MikeOxon is offline
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Re: Hand held Orion

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Originally Posted by Phill D View Post
That's an impressive shot Mike but it looks weird upside down I'll definitely try higher iso next time.

Another technique I could mention is to take a number of shots and then use software to register and stack the individual shots into a combined version with less image noise. thank you for your comment on my NZ photo You might find more tips in the 'communal night sky photos' thread
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  #17  
Old 7th February 2019
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MJ224 MJ224 is offline
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Re: Hand held Orion

Are those red spots hot pixels?? I had some during my last Astro foray. I carried out the Pixel Count or mapping, on the camera, so hopefully they are gone...……..
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  #18  
Old 7th February 2019
MikeOxon MikeOxon is offline
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Re: Hand held Orion

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Are those red spots hot pixels?? I had some during my last Astro foray. I carried out the Pixel Count or mapping, on the camera, so hopefully they are gone.....
Yes, I think most of them are - although Betelgeuse really is red!

The NZ shot was taken on my old E-M1-i, so I can't go back and check.

I do see a few on my E-M1-ii, which disappear when noise reduction is applied, at exposures longer than 1 second. I guess it would always be worth taking a dark reference image at the same time, since these things can be temperature sensitive.
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  #19  
Old 7th February 2019
Ulfric M Douglas Ulfric M Douglas is offline
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Re: Hand held Orion

Orion was looking fantastic that night!
The moon was nowhere to be seen.
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  #20  
Old 8th February 2019
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Phill D Phill D is offline
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Re: Hand held Orion

It certainly was Ulfric. It was a great for an hour or so before it went misty.
Mark yes I think there were a few red ones in my shots too There was also an odd set of four green ones together in my first shot? I'm sure that must be a sensor issue too, not sure what it is though. Haven't seen it again but haven't done any astro shots since though.
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Old 8th February 2019
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Re: Hand held Orion

I think both the red and the green dots are stuck pixels. They come and go when the sensor starts to warm up. Easily fixed though in post-processing.

I went out last night to have a go but it was too misty.
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Old 8th February 2019
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Re: Hand held Orion

Thanks Dave you saved me Googleing it
The green ones were a bit curious as they were in a square set of 4 with probably one good blank one in the middle.
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Old 8th February 2019
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Re: Hand held Orion

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Originally Posted by Ulfric M Douglas View Post
Orion was looking fantastic that night!
The moon was nowhere to be seen.
Australia?
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