This data-set is probably one of the best I have gathered in a while...under a full moon to boot!
Kudos to Martin Pugh for making me lift my game and realise an AO-X on a FSQ can make a difference. (Martin kindly showed me some of his data of the same region a while back)
Sorry. No colour (yet). I was simply delighted with the light and shadow that nature can surprise us with...
Magnificent. One gets a strong feeling of two humongous clouds colliding, one closer, one further away, over-riding each other in three dimensions. The Norma Bipolar Nebula and its faint outer shell came out well.
That looks great. That should put a stop to any discussion about whether an AO unit helps or not.
Greg.
Thanks Greg....I find the AO conversation to be entertaining when its decided seeing isn't being corrected after all, so it must be the mount. In any event the raw data shows stars around 9 micron across the entire 16803 chip, i.e a single pixel...very pleasing to see!
Quote:
Originally Posted by Placidus
Hi Peter,
Magnificent. One gets a strong feeling of two humongous clouds colliding, one closer, one further away, over-riding each other in three dimensions. The Norma Bipolar Nebula and its faint outer shell came out well.
Best,
Thanks!
Quote:
Originally Posted by Stevec35
Looking good Peter. Very nice composition too. Colour should be great.
Cheers
Steve
Ta. I'm hoping the weather will allow a NB sequence...
Looks great, would love to see a narrowband colour version
Ta...given it's a full moon it will probably stay clear for the NB data
Quote:
Originally Posted by Paul Haese
Full res?
I have been collecting data on 6164 for months and months with the RC12. It's a fascinating object.
Nice scale, contrast.
Yes Martin has a habit of doing that.
Thanks Paul.....2/3rd's res to keep it web friendly. The field is cropped from the attached full-field....which looks quite awesome uncompressed at full res
yep, very pleasing Peter and good to know the 7nm filter has handled the full moon quite nicely (granted it in a different part of the sky).
I appreciate the feedback...as for the moon, how typical...as it wanes I'm seeing the clouds build...sigh..
Quote:
Originally Posted by cometcatcher
That's a beautiful Ha image.
Quote:
Originally Posted by Retrograde
I normally find black & white images less than exciting but wow this has such amazing texture and subtlety.
Thanks for the positive comments. B&W images do need light and shade, as they can be a bit boring without it. That said... some SII and OIII would be awesome.
That fov is insanely huge and pinpoint from corner to corner. Very cool.
Regarding the AO discussion I agree with mount correction and improved guiding with a tilt/tip system but I honestly can't see how seeing related to one star in the center of the fov could possibly correlate to the stars on the entire field so I still think Gaston has a point.
My tilt/tip does a great job on narrow field with a smallish sensor.
That fov is insanely huge and pinpoint from corner to corner. Very cool.
Regarding the AO discussion I agree with mount correction and improved guiding with a tilt/tip system but I honestly can't see how seeing related to one star in the center of the fov could possibly correlate to the stars on the entire field so I still think Gaston has a point.
My tilt/tip does a great job on narrow field with a smallish sensor.
Thank you Marc, your comments are as always appreciated. Re: the AO-X
I suspect there are several factors at work, and subscribe to the theory if the seeing is "slow" then the correlation can be high across a good sized aperture.
I also have no doubt virtually instant and accurate guiding corrections by deftly moving few tens of grams of AO, rather than 100kg of telescope/counterweights/mount pays a dividend. However you cut it, tighter and brighter stars is the result I see time and time again.
By the way, I was guiding at a slovenly 2Hz...sadly a brighter guidestar was not available.
I suspect there are several factors at work, and subscribe to the theory if the seeing is "slow" then the correlation can be high across a good sized aperture.
I don't disagree with that but your whole field is way over a couple of degrees across?
Quote:
Originally Posted by Peter Ward
I also have no doubt virtually instant and accurate guiding corrections by deftly moving few tens of grams of AO, rather than 100kg of telescope/counterweights/mount pays a dividend. However you cut it, tighter and brighter stars is the result I see time and time again.
No argument there.
Quote:
Originally Posted by Peter Ward
By the way, I was guiding at a slovenly 2Hz...sadly a brighter guidestar was not available.
Yes it is also my experience up to 5Hz is realistically achievable and does an excellent job at smoothing all the "noise".
Well the image is lovely, not an argument from me, a long time user of the FSQ/Atlas/and Proline 16803 system. The AOX however is a puzzle. With a 16803 array, 9um pixels, and the FSQ, the resolution is 3.5 arcseconds per pixel. Can that be bested with the AOX? IMO, the bigger failure of the FSQ system and resolution is the focal length change with temperature. This has become such an annoyance, I've dropped my 40 minute subs to 30 minutes.
Well the image is lovely, not an argument from me, a long time user of the FSQ/Atlas/and Proline 16803 system. The AOX however is a puzzle. With a 16803 array, 9um pixels, and the FSQ, the resolution is 3.5 arcseconds per pixel. Can that be bested with the AOX? IMO, the bigger failure of the FSQ system and resolution is the focal length change with temperature. This has become such an annoyance, I've dropped my 40 minute subs to 30 minutes.
j
Ta very muchly !
The AO-X/FSQ creates what I call "single pixel guiding"....works for me
...and yep...noticed the focal plane shift...a real PITA...
Running 10 minute subs and I had to tweak the focal plane after every sub.
Quote:
Originally Posted by Joshua Bunn
Awesome field Peter, Absolutely love the contrast and 3D effect!
and good to know the 7nm filter has handled the full moon quite nicely (granted it in a different part of the sky).
