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Bored, clear sky and no DSO's

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15 years 11 months ago #68120 by phoenix
Replied by phoenix on topic Re: Bored, clear sky and no DSO's
The big unsharp mask by Russel Croman starts at step 13 is this link

www.rc-astro.com/resources/index.html

You can do it with anything to avoid burning out the brighter zones in an image and enhancing fainter detail. You can aslo use it selectively sharpen areas.

Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/

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15 years 11 months ago #68180 by Seanie_Morris
Replied by Seanie_Morris on topic Re: Bored, clear sky and no DSO's

Seanie I increased the brightness for you aswell. If you would like it in green with a cheesy smell let me know :lol: .

The H alpha filter was purely to reduce the amount of light hitting the ccd otherwise I would just get a saturated blob.


You're ok for the cheese, there's enough of it going around here to last... :D

If you had taken the mosaic without the H alpha filter, and maybe used far less exposure times, would that have helped in brightness, and then maybe sharpness at all do you think?

Seanie.

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

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15 years 11 months ago #68320 by phoenix
Replied by phoenix on topic Re: Bored, clear sky and no DSO's
Seanie, I had the ccd at its lowest possible exposure setting even with the H Alpha. The only thing that could improve the sharpness would be more images. I had another go on the 14th and took 30 images per frame of the mosaic and stacked only those that had a quality of 80% or better.

This is a BIG image........... ancarraigobservatory.co.uk/Moon14thMay2008.htm

Kieran
16" ODK (incoming), Mesu Mount 200, APM TMB 80mm, SXV H16, SXV H9
J16 An Carraig Observatory
ancarraigobservatory.co.uk/

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15 years 11 months ago #68321 by pj30something
Replied by pj30something on topic Re: Bored, clear sky and no DSO's
Personally i dont think it needs sharpening. I think it looks great just as it is.

Paul C
My next scope is going to be a Vixen VMC200L Catadioptric OTA

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