Horsehead and flame nebula

Discussion in 'My Astrophotos' started by Brian Atteridge, Nov 9, 2019.

  1. Brian Atteridge

    Brian Atteridge Cyanogen Customer

    Joined:
    Jan 23, 2017
    Messages:
    32
    Location:
    Lewisville, TX
    I decided to try taking shots of the Horsehead and Flame nebula with my telescope setup though i wasn't able to get a lot of shots due to the weather effects on my camera and scope. However what i got wasn't half bad for only 6 shots. My equipment is as follows:

    Meade LX-90 OTA (Classic)
    Orion Sirius EQ-G computerized tripod with PC control connection
    Meade f/6.3 FF/FR that is apparently actually F/4.5 or so (one of the mis-manufactured Meade ones)
    Orion Nautilus 2" filter wheel
    2" Dark Frame Filter.
    2" Orion SkyGLow filter
    Canon EOS 60D (modified for Full Spectrum)
    Orion SSAG and a 50mm Guide scope package from Orion /w IR block filter
    MaximDL 6.2 controlling telescope, camera, filter wheel and SSAG

    All Subs were 00:04:10 long at ISO 800 in moderately light polluted skies with temps hovering around 14-18 C
    Subs Were dark and flat subtracted Processing was done in MaximDL, mostly, with a few sharpening and noise reduction effects in Photoshop.
     

    Attached Files:

  2. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    2,433
    Nicely done Brian.
    I'm always amazed what people like you can do with a modest and noisy DSLR with a bit of hard work.
    You might want to play with MaxIm's sharpening and noise reduction capabilities too - there is a lot there. It's not quite as interactive as Photoshop, but a lot there.
     
    Brian Atteridge likes this.
  3. Bernard Miller

    Bernard Miller Cyanogen Customer

    Joined:
    Oct 12, 2014
    Messages:
    3
    Location:
    Phoenix, AZ
    Brian Atteridge likes this.
  4. Brian Atteridge

    Brian Atteridge Cyanogen Customer

    Joined:
    Jan 23, 2017
    Messages:
    32
    Location:
    Lewisville, TX
    Yeah that gradient was because the flat i took wasn't as completely flat as i hoped. I took the images on friday, left my scope setup all day saturday and then took the flats and some darks saturday night when the temp was similar. Unfortunately the cold weather caused my scope to shrink enough to throw the colimation way off. Everything on the outer edge of the image was distorted completely and no amount of focus fixed it when i first tried to take some lights of M33. I took the flats anyway since the orientation of the camera to scope hadnt changed but it left the image with a bit if a gradient to it that i could not get rid of. I did crop the image a bit to remove the worst of it but that still left some glow on the right side. Next time i will take the flats at the same time as the images...
     
  5. Brian Atteridge

    Brian Atteridge Cyanogen Customer

    Joined:
    Jan 23, 2017
    Messages:
    32
    Location:
    Lewisville, TX
    I should also mention the focal reducer/flattener i use is one if the meade f/6.3’s that is really f/4.5. When it shrunk it also affected the focal ratio by making it worse. Usually the outer edges only have slightly elongated stars but this time they were bad, WAY out of focus.
     

Share This Page