Cat's Eyey Nebula

Discussion in 'My Astrophotos' started by ROBERT T SCHAEFER JR, Jul 13, 2018.

  1. ROBERT T SCHAEFER JR

    ROBERT T SCHAEFER JR Cyanogen Customer

    Joined:
    May 13, 2018
    Messages:
    213
    Cat's Eye Nebula NGC6543 as RAWMono-Autosaves using various ISO's and two to three minute exposures .. ISO1600 and 3200 and 6400 .
    Early this morning I was doing then ..Friday the 13th June 2018 .. the sky was about 5% blurred with 95% visabilty and I had to use
    .25xSiderealGuideRate because 1xSidereal wouldn't do it . MaximDL Pro was used for everything with the Rebel T7i . 25 images were
    'Manual 2 Star' stacked .... this is as good as I could get it and "Rank Filter 5% Radius and 40% Contrast" was used and 'screen-stretch' to
    darken the background agitation ... the image is cropped and "Double Size" because the nebula is small .
    Mizar and it's companion Alcor were used for a 'Live View' focus and the same focus position was used on the NGC6543 . x
     

Share This Page