NGC6820 better processing

[Carole]

I am going back to a number of my images and reprocessing them, as I wasn't happy the first time around.
Much happier with this result.

This is the original post:
http://forum.orpington-astronomy.org.uk/index.php?topic=11501.0

Original info:
Dual Rig

Atik314L/WOZS71
Atik460EX/ED80
Both with x0.8 focal reducer
HEQ5
Ha 29 x 600 = 4 hours 50mins
Oiii 17 x 600 binned + 5 x 300 = 3 hours 15 mins

Total imaging time = 8 hours 5mins

Oiii taken with Atik460/ED80 and Ha taken from both cameras.
There is some blue signal in there, but it seems to be swamped by the stronger Ha signal

Better view on Astrobin:
https://www.astrobin.com/full/370867/C/?nc=user

[ApophisAstros]

Cant wait for my HA filter to arrive to get some of that lovely fine detail, great image.
Roger

[Carole]

Thanks Roger.  Yes the Ha filter will open up new opportunities for you, and of course it will be great at keeping the LP out from your home location.

Carole

[Roberto]

Very nice Carole!  HaOIII works really well on these targets. Yellow stars keep their colours.
Roberto

[Carole]

Thanks Roberto.

Carole

[The Thing]

Nice Carole. It's surprising what you can get out of an image by processing it slightly differently to what you initially thought was the 'right' way. I think a reprocess is always a good idea, the difficult bit is deciding when you have it 'just so' and post it, because really one always has another go and produce a better version after the post. C'est la vie.

Duncan

[Carole]

Thanks Duncan.  Once upon a time reprocesses used to be frowned on on this forum, but I am glad that doesn't seem to be the case of late and I could never understand the objection because as you say you can get a completely different result second time around.

I think on some of the dimmer images I have probably just processed them a bit too hard and by "pulling back" a bit I can get a less noisy and smoother result.

the difficult bit is deciding when you have it 'just so' and post it

Very true.

I think also some of the images I have been posting of late are less usual ones (mainly because I have run out of targets), and I think the reason they are less usual is because they are dimmer and more of a challenge. 

But in the end I didn't want to leave the original process as the only one I posted.  so thanks for your comments.

Must try to do better first time around in future.

Carole

[MarkS]

That's made a big difference!

Ignore the detractors - reprocessing is always worthwhile.

Mark

[Carole]

Thank you Mark.

Ignore the detractors - reprocessing is always worthwhile.

Thank you for that too and I agree. 

Caole

[Fay]

I must do a reprocess as have a trial PIXinsight for a month