Rosette Nebula, HaRGB

Happy valentine's day!

I finally had a clear (and cold!) night to capture some RGB data to go with the hydrogen-alpha from a few weeks ago. (My OIII efforts during the full moon were a waste, too many gradients thanks to the moon.)

So here is a first draft -- I will have another crack at processing this one soon. Somehow all the orange/yellow stars got washed out, and the background is somewhat noisy.

In terms of integration time (minutes), for Ha:R:G:B it's 180:45:45:45, with the RGB channels binned 2x2. So not a ton of colour there.

Thanks for looking,
Adam

Comments and faves

  1. ★

    Jarle Grindhaug, Cygnus~X1 - Visions by Sorenson, gainesp2003, Mike Cialowicz, and 68 other people added this photo to their favorites.

  2. astrometry.net (40 months ago | reply)

    Hello, this is the blind astrometry solver. Your results are:
    (RA, Dec) center:(98.017775583, 4.99851257052) degrees
    (RA, Dec) center (H:M:S, D:M:S):(06:32:4.266, +4:59:54.645)
    Orientation:164.46 deg E of N

    Pixel scale:7.70 arcsec/pixel

    Parity:Reverse ("Left-handed")
    Field size :2.19 x 1.49 degrees

    Your field contains:
    The star 12Mon
    NGC 2239 / NGC 2239 / Rosette nebula
    NGC 2244 / NGC 2244
    NGC 2252 / NGC 2252

    View in World Wide Telescope

    -----
    If you would like to have other images solved, please submit them to the astrometry group.

  3. Cygnus~X1 - Visions by Sorenson (40 months ago | reply)

    Amazing...gorgeous!

    --
    Seen in the group"astrometry" (?)

  4. gainesp2003 (40 months ago | reply)

    Beautiful shot of the Rosette!

  5. Anna (www.eprisephoto.com) (40 months ago | reply)

    Another wonderful image!!!! What length subs were they?

  6. write_adam (40 months ago | reply)

    Thanks for the kind words everybody!

    Annie, they were 9 X 20 minutes for the Ha, and 9 X 5 minutes binned 2x2 for the RGB.

  7. Mike Cialowicz (40 months ago | reply)

    Wow, absolutely sublime...

  8. Jοey (40 months ago | reply)

    Always impressed with your work my friend.. love the addition of RGB data.. very nice! You're going to be unstoppable with the new SBIG camera! :)

  9. jdmuth (40 months ago | reply)

    That is awesome, beautiful image!!!

  10. Riccardo Matteoli (40 months ago | reply)

    good work!!!!! if i only could find a clear night...

  11. Anna (www.eprisephoto.com) (40 months ago | reply)

    Adam - see this is really why I need to get a wedge! I decided to upgrade my camera first though so the wedge is gonna have to wait even longer. If you have time one day can you shoot me a message explaining binning to me? My new camera has that ability and my old one didnt so more learning for me!

  12. sedo_5 (40 months ago | reply)

    perfectly done!

  13. Xavier Ambs (40 months ago | reply)

    Oh yes it's a great shoot

  14. Paul Rumsey (40 months ago | reply)

    Hi, I'm an admin for a group called Sky @ Night, and we'd love to have this added to the group!

  15. liphotos (40 months ago | reply)

    Oh wow, just stunning!

  16. write_adam (39 months ago | reply)

    Hi everyone! Thank you so much for the kind comments. Sorry I haven't dropped by Flickr in a while so I missed the last few.

    @Annie - absolutely, re binning it's basically a technique (available via software for most astro CCD cameras) to increase light -gathering at the expense of lower resolution. Binning 1x1 is the same as not binning at all. Binning 2x2 is essentially treating a 4-square area of pixels (2 by 2) as one large pixel -- it therefore gathers 4 times the photons of a single pixel. It is however 1/4 the resolution of an unbinned CCD. 3x3 binning does the same for a square of 9 pixels, 4x4 for 16, etc.

    The advantage of binning is that you can capture sufficient light signal in a fraction of the time required for an unbinned photo.

    By using LRGB blending techniques, you can therefore capture Luminance at 1x1, and colour at 2x2 or higher, but blend the colour from the 2x2 into the resolution of the unbinned, 1x1 image. Best of both worlds!

    Hope this helps.

    Cheers,
    Adam

  17. Wherever I Roam (37 months ago | reply)

    I'm not really fluent on astro-speak, but this is stunning! ..you rawk man!

  18. AngelikaRaven (34 months ago | reply)

    um.. is it just me ...or does it look alot like a skull???
    i dont understand the techy stuff ..but your work is fab!!!

  19. i n i m i n i (34 months ago | reply)

    ooooooolala

  20. Cardigan Lane (34 months ago | reply)

    Was about to say the same thing... looks like a skull to me too...crazy!

  21. This photo was invited and added to the Nature Nerds group.

  22. UNNÖTIGdigga. (33 months ago | reply)

    WOW i love this

  23. write_adam (33 months ago | reply)

    Thank you!

  24. perekepa (19 months ago | reply)

    ¿Os habeis dado cuenta de que parece una calavera?
    Have you noticed that looks like a skull?
    ;)

keyboard shortcuts: ← previous photo → next photo L view in light box F favorite < scroll film strip left > scroll film strip right ? show all shortcuts