Rosette in Narrow Band

[nandopg]

Hello,

This is my shot on Rosette in bi-color mapping.

My main interest is to show the dark nebulae and Bok Globules presents in Rosette, so that to have a better contrast of these structures, I decided to image Rosette in Narrow Band , using Ha and O3 filters.
The final image is not as smooth as normally Rosette is presented but shows the type of structures I was focused on.

The full resolution image is here (http://www.astrobin.com/full/64780/0/)

Image:
9x900sec Ha bin 1x1
12x900sec O3 bin 1x1
Scope: TMB 92 f/5.5
Focal Reducer Flattener Teleview TRF 2008: x0.8
OAG: SBIG OAG-8300
Camera: ST8300
CCD Guider: Lodestar

Pre and Pos-Processing: PixInsight
Bias, Darks and Flats applied

Thanks for looking,

Fernando

[Shiraz]

excellent result Fernando. What bandwidth filters did you use?

[nandopg]

Thanks for the thumbs up Ray.

My Ha filter is 6nm and the O3 and SII are 12nm.

Best Regards,

Fernando

[broca]

Nice work! Beautiful colors.

[nandopg]

Hi Steve,
Thank you very much for the nice comment.

Regards,

Fernando

[troypiggo]

Lovely. I notice you're using almost the same gear as me - TMB92SS and I have the QSI583ws (same sensor as you). I tried the TRF2008 but couldn't get round stars in the corners, but notice you have. I suspected with my setup it was the spacing between flattener and sensor. Out of interest, what do you have between the 2?

[nandopg]

Troy,
Thanks for the kind comment.
My camera is a ST8300M equiped with a filter's wheel model FW8-8300 from SBIG and a OAG also from SBIG model OAG-8300. The total back focus of this setup including the camera, is 57mm, so that I have included a 2mm ring spacer to make 59mm, that I concluded empirically as the optimum spacing between the TRF2008 and the sensor.
Even being at the optimum distance, I didn't achieve round stars in the corners, where they are a little bit elongated so, I could not escape of cropping the image a bit to get rid off those elongated stars.

Best Regards,

Fernando

[White Rabbit]

Lovely sharp image is there a high res version?

[nandopg]

Hi, thanks for the kind comment. The full resolution image can be seen on the link below:

http://www.astrobin.com/full/64780/0/

Note that there is a combo box on the upper right corner called "View" where you can click on the little arrow and select "Full Resolution".

Best Regards,

Fernando

[E_ri_k]

Love it:thumbsup: Great work! The dark areas stand out very well.
Erik

[nandopg]

Thank you Erik !! I am glad that you pointed out about the dark areas as that was my main goal with this image.

Best Regards,

Fernando