Veil Nebula with STC-7

Discussion in 'My Astrophotos' started by Doug, Jun 10, 2021.

  1. Doug

    Doug Staff Member

    Sep 25, 2014
    It cleared up late last night, so I set up the observatory and went to bed. By the next morning MaxIm DL had managed to collect 2-1/2 hours of exposure before it shut down the observatory due to twilight.

    This is a Hubble palette Ha-SII-OIII shot of the Veil Nebula. Seeing was averaging around 3.3 arc-seconds so mediocre but not surprising. I always get my best seeing in the spring for some reason.

    Tim Povlick likes this.
  2. Colin Haig

    Colin Haig Staff Member

    Oct 27, 2014
    So much detail in there - the sensitivity of this camera is just nuts. There's really a lot of faint filaments in the background that I don't typically see from shots taken in suburbia.
    My guess is the daytime heating is the issue - sets up a lot of upper atmosphere convection, and formation of cumulus cloud beyond 40,000 feet. It takes quite a few hours for that to settled down.
    Any weather/upper atmosphere experts out that that can comment?
  3. Tim Povlick

    Tim Povlick Cyanogen Customer

    May 8, 2020
    Kayenta Utah, USA
    very well done Doug...

    Figured I'd give it a go also, this is only two stack at 6 minutes each. Seeing was about same ~3.5 FWHM.
    Didn't come close to the master.
    This always seemed a challenging object being somewhat dim. On the plus side, not an HDR.

    Attached Files:

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