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Old 14-05-2013, 10:01 PM
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naskies (Dave)
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Join Date: Jul 2011
Location: Brisbane
Posts: 1,865
Quote:
Originally Posted by strongmanmike View Post
Excellent result Dave

13hrs is a lot of data though, not sure why you feel you need more really ?

Looks like you had great fun camping though is that Leyburn?

Mike
Thanks Mike! Yep, that's in Leyburn.

My RC8 has a 50% secondary obstruction, and I'm oversampling with my 8300 chip at 0.68''/px, so my 13 hrs might be a bit misleading

I really like the ultra-smooth look (ala Martin Pugh's images) so I'll stop when I reach the point where adding extra data doesn't give me a big jump in detail/smoothness.

Side note - I'm up to 12.5 hours on my Cat's Paw and it's look smoooooth

Quote:
Originally Posted by RobF View Post
Sure looks pretty good to me already too Dave. Nice image scale. What software are you using for processing?

Love the widefield. I'm suffering Leyburn withdrawal already. I wanna go back now!!
Thanks Rob! The widefield was from Sunday night - brilliant transparency until the clouds arrived at 12.30 am It was stacked in DeepSkyStacker and processed in Photoshop. Learning PixInSight is on my todo list...

Hope to see you out there again soon!

Quote:
Originally Posted by alpal View Post
Hi Dave,
that M83 is looking great.
I have a feeling you'll be able to dig a lot more out of that data.
Well done.

cheers
Allan
Thanks Allan! Yes, there's heaps more potential in the L and B data, but my R and G channels fall apart. I might collect a bit more data and have a go at it in PI.

Quote:
Originally Posted by RickS View Post
Dave,

Shame about the weather (I feel your pain!) but good to see you got some great data. I found with my RC10 that it does take a lot of time to get good colour at f/8. There's always the option of heavy noise reduction

Cheers,
Rick.
Thanks Rick! Yeah, I'm very happy with the RC8's image quality but just wish it was a *lot* faster. How's your AG12 and Ceravolo coming along - any chance to use them in anger yet?

Quote:
Originally Posted by gregbradley View Post
That has a lot of potential. Are you shooting your RGB binned 2x2?
I usually do that to get the colour quickly. Sometimes I use 1x1 if I want maximum detail but usually 2x2 works nicely.

Greg.
Thanks Greg. Yep, I was shooting 30 min L subs at 1x1 binning (0.68''/px) and 22.5 min RGB subs at 2x2 binning.

Starizona's exposure calculator with the measured sky background gives me an ideal exposure duration of 36 mins for the Ls.

I seem to be getting a good balance between capturing detail and maximising dynamic range with my subs - it's just takes a long time to get there with this scope. Binning my L subs at 2x2 (10.8 um to give 1.36''/px) might be the way to go in the future.
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