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Old 04-05-2021, 10:47 PM
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muletopia (Chris)
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moonlight experiment M83

Folks,
I have collected 8 hours of images of M 83.
Three consecutive nights with increasing moon and last night.Lat night was dark and good for imaging, Nebulosity RMS .3 to .35 seconds.


The stack of four nights is not as good as the stack of the first of the first two nights plus last night.
Oh for more nights like last night.


The image attached is a stack of 37 exposures.
All images from a QHY8L OSC camera, gain 0, exposure length 600 seconds.


Telescope Takahashii Mewlon 210 with field flattener.


Mount Mesu Mount 200 (mark 1).


The flattener is not totallu successful and the darks need to be reshot for last nights images.


What else?


Comments please.
Chris
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Old 05-05-2021, 12:34 AM
raymo
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Stunning!!
raymo
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Old 05-05-2021, 06:57 AM
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PKay (Peter)
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Well done Chris
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Old 05-05-2021, 09:26 AM
Zuts
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That is a fantastic image scale for galaxies, really good details.
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Old 05-05-2021, 07:10 PM
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muletopia (Chris)
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Thanks

Thanks for the kind words.
It would be nice if someone were to suggest how I could improve the image,probably in the processing steps.


Chris
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Old 05-05-2021, 09:39 PM
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PKay (Peter)
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Hi Chris

I use Pixinsight so can't help with Nebulosity.

Also your image is too small to see much & what I can see has a lot of noise and little detail.
Have a look at what others have done to use as a reference.

When uploading to IIS, I let the server downsize the image, it will accept up to about 1.2Mbyte.


Basic steps after calibrating aligning and integration are :
Background extraction
De Noise
De Convolution
Stretching (developing)

Non linear stage:
Do the tutorials, the methods are endless...

Here is mine (NB): https://www.iceinspace.com.au/forum/...e.php?a=274421
Hi Res: https://www.astrobin.com/full/j771z5/0/

And from ChrisD (OSC): https://www.iceinspace.com.au/forum/...d.php?t=190701

Last edited by PKay; 05-05-2021 at 10:09 PM.
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