Needs a lot more subs but this is the best I can do for now. 34 x 120s unfiltered with the C11 hyperstar and unguided NEQ6.
(http://farm9.staticflickr.com/8042/8029517473_fcc0fee040_b.jpg)
Link to a larger version: http://farm9.staticflickr.com/8042/8029517473_6599d1afe4_h.jpg (http://farm9.staticflickr.com/8042/8029517473_6599d1afe4_h.jpg)
TFL
Robert
An excellent result!
Your dust has come out very well and your processing has done a good job of distinguishing it against the background.
Iris Nebula is a great target for demonstrating the power of your new imaging setup. You have just over one hour total exposure - incredible image for such a short time.
Personally I would increase the colour saturation a bit but that's only a matter of taste.
Mark
Thanks Mark. I have to say I agree with you about the saturation. Even though I did boost it a bit it still looks like I need a bit more. I also have another 30 mins in 30s subs that I'm considering adding (if I can work out a way to do that without adding noise).
Cheers
Robert
Love the brown dust Robert. I know you are using a hyperstar but what camera were you using with the hyperstar. sorry if this is a dumb question but I am not quite sure how the hyperstar works and am assuming a small camera is plugged into the hyperstar itself.
Also I agree with Mark these are excellent results for such short subs.
Carole
Thank you Carole. The camera is a Starlight-Xpress SXVF-M25C one shot colour which has an APS size Sony sensor.
The hyperstar works by using the C11 main mirror and a special corrector lens. The corrector lens replaces the normal SCT secondary mirror in the corrector plate at the front of the OTA so instead of being f/10 it becomes f/1.9.
Robert
Quoteinstead of being f/10 it becomes f/1.9.
Wow, I knew it reduced the focal ratio, but I didn't know it was by that much.
Carole
Quote from: Carole
Wow, I knew it reduced the focal ratio, but I didn't know it was by that much.
At F/1.9 it collects photons more than twice as quickly as the Tak Epsilon at F/2.8 which itself is twice as fast as "fast" F/4 scopes.
That's excellent - really liking ALL that brown stuff - really deep - John.
Your 1 hour of data seems to have come out better than 4 hours on my Tak:
http://www.markshelley.co.uk/Astronomy/2010/iris_2010.html
I might try reprocessing to see if I can bring out more in the image but it's a very thought provoking comparison ...
That looks really good Robert, so much dust
Fantastic Robert, such short subs as well!!!!!!
I like that a lot, would be tempted to put another hour or two into it then it will be a super image.
Hmm no do I go out and but a OSC and C11? Would work well from my place.
Better not though or winter will be cloudy.
Quote from: Rocket Pooch
Hmm no do I go out and but a OSC and C11? Would work well from my place.
Yes - I'm also tempted ...
If you get stuff now while the weather is crap anyway, the weather gods might get confused and clear the skies and make the wind go away :lol:
Like I need a 6th scope!
The man who dies with the most toys wins ;)
Sounds like I've got some catching up to do :o
Thanks for the good comments.
Mark, I'm not sure of the 4:1 ratio on hours but I can tell you that the M25 wipes the floor with the 450D. It's not just about focal ratio and sensitivity but also because the s/n ratio on the camera is just so much better, I can pull more data out of images.