Loading ...
Sorry, an error occurred while loading the content.
 

Re: NGC 925 - First LRGB Image

Expand Messages
  • Bob
    Thanks, Bernard. Levels in CS4 tells me I left a 4-point pedestal on the blackpoint. Maybe not enough? Increasing it lightened the sky background, but seemed
    Message 1 of 3 , Feb 12, 2013
      Thanks, Bernard. Levels in CS4 tells me I left a 4-point pedestal on the blackpoint. Maybe not enough? Increasing it lightened the sky background, but seemed not to reveal any more of the bluish glow around the Gx.

      Bob

      --- In ccd-newastro@yahoogroups.com, "Bernard Miller" wrote:
      >
      > Bob,
      >
      >
      >
      > Not bad for your first image. I am not that familiar with this object so I
      > am not sure about the color. It looks like you black clipped the data
      > little. Try redoing the image and pay attention to the black point to make
      > sure you don't clip the data.
      >
      >
      >
      > Bernard
      >
      >
      >
      >
      >
      > From: ccd-newastro@yahoogroups.com [mailto:ccd-newastro@yahoogroups.com] On
      > Behalf Of Bob
      > Sent: Tuesday, February 12, 2013 11:52 AM
      > To: ccd-newastro@yahoogroups.com
      > Subject: [ccd-newastro] NGC 925 - First LRGB Image
      >
      >
      >
      >
      >
      > NGC 925 in Triangulum is an interesting challenge - fairly large but fairly
      > faint.
      >
      > Image is here: http://tinyurl.com/au3p5qo
      >
      > After some years of happy OSC imaging, I've diversified with a QSI 583wsg on
      > an ASA 12-inch. This is my first try at assembling all the bits and pieces
      > of a mono image, from 10 hours of photon collecting on six nights in
      > September and November. Used CCDStack 2, CS4 and Adam Block's fine
      > tutorials.
      >
      > Not sure I got the G2V calibration entirely right. I think there should be a
      > warmer feel to it.
      >
      > Critiques welcome. Thanks for looking,
      >
      > Bob Gillette
      >
      >
      >
      >
      >
      > [Non-text portions of this message have been removed]
      >
    Your message has been successfully submitted and would be delivered to recipients shortly.