Taking advantage of a pretty good weather and school holidays, I was able to put together a new image - the first one with my new telescope. Happy days!
Some technical info:
Scope: CFF 105mm f/6 with a 0.75 Riccardi reducer (imaging at f/4.5)
Camera: QSI 690
Filters: 3nm Astrodon
Exposure: Ha - 195 min, OIII - 420 min, SII - 420 min
Colour palette: SHO
Processing: PixInsight 1.8
Signal in OIII and SII was quite weak; I was getting about 3 photons per pixel per minute in the brightest areas with OIII, with SII being somewhat weaker still.
There is some field curvature in the corners so my next image will be at native f/6 with just a flattener to further test the new telescope. I am starting to appreciate the 3.2" FT motorised focuser - solid as a rock and wonderful precision. As for the optics in the new scope - I have immediately noticed some welcomed improvements over my previous beautiful and trusty TS ED doublet - with CFF there was only very minimal focus shift between OIII and SII filters and virtually no halos around stars, but frequent refocus was needed at F/4.5. After trying f/4.5, I look forward to imaging at native f/6.
Congrats Slawomir, looks a very good early result! Nice colours too
Quote:
Originally Posted by SimmoW
Oh your IIS image seems cropped?
Glad you like it Simon. I sometimes just attach a crop to IIS posts because of a 200kB file size limit, but trying to remember to provide links to a full res on Astrobin
Quote:
Originally Posted by alpal
Hi Suavi,
wow - that looks so polished & professional.
Well done.
Niiice shot Suavi, of a magnificent...perennial...imaged ad nauseum ....yaaaawn Object
Juuust kidding looks really great! and well done in shaking down the new kit (perfect object for doing this ) Looks to be performing very nicely...be my turn soon
Great looking image, Suavi! Congrats on the first light.
Thank you Rick, it's good to be imaging again
Quote:
Originally Posted by topheart
Hi Suavi,
That is very very good.
Congratulations!
Cheers,
Tim
Thank you Tim.
Quote:
Originally Posted by gregbradley
That is a very vibrant 6188, I am mightily impressed.
Congrats on a super successful first light.
Greg.
Thank you Greg for your encouragement. It was a bit of a challenge to bring vibrancy to this image due to a weaker SII and not so great SNR in OIII, possibly due to occasional cloud passing when I was collecting OIII and of course proximity to the city.
Quote:
Originally Posted by strongmanmike
Niiice shot Suavi, of a magnificent...perennial...imaged ad nauseum ....yaaaawn Object
Juuust kidding looks really great! and well done in shaking down the new kit (perfect object for doing this ) Looks to be performing very nicely...be my turn soon
Mike
I look forward to your mega wide field image of this area Mike. I would like to more distinctly highlight hot SII and OIII regions, but with my rig and being close to the CBD, I would need to expose OIII six times longer than Ha, and SII probably about eight times longer to get a similar SNR to Ha. So there is a challenge for you Mike
....yaaaawn 
Object 
looks really great! and well done in shaking down the new kit 
) Looks to be performing very nicely...be my turn soon 
