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Found 10 results

  1. The summer has proven challenging weather-wise here in the UK. The original plan was for 5 hours each of SII, Ha and OIII on this object. I got pretty close to completion last night before the clouds rolled in. I have decided to call it therefore, even though I am still 4 subs short of target. This is my Esprit 120, with QSI 690 atop a Mesu 200 in my home observatory. Data captured between 27 May and 19 August 2017 and consists of: Ha: 18x1200" OIII: 13x1200" SII: 13x1200" For a total of 14.7 hours Data was then brutalised using PI and PS.
  2. goose35

    deneb processed

    From the album: widefield

    Canon EOS 1100D with 135mm m42 lens at F4 via a adaptor 24 x 30 sec lights 10 each dark, flats and bias. Need to get a stepdown ring for my 2 inch neodynum filter
  3. I've spent the day at the keyboard documenting some image processing techniques and as the skies have been so poor, I've had to use some old data for the screen shots but this one worked out OK with the new work-flow. A Wall of Ionization NGC 7000, the North America Nebula, is a very popular deep sky imaging object and its rich Ha emission content makes it particularly appealing for RGB imaging. However, I like to capture this region of the Milky Way in Cygnus using narrowband filters to really bring out the detail in ‘The Wall’. As well as the predominant Hydrogen Alpha (Ha), this object is also quite rich in doubly ionised Oxygen (OIII) emissions. The position of OIII emissions in the light spectrum, right on the cusp between green and blue, allows a full RGB colour image to be produced from just two sets of filter data by using the OIII data for both the green and blue channels and the Ha data for the red channel. Image Stats Mount: Mesu 200 Telescope: William optics FLT98 Reducer: William Optics FR IV Camera: QSI 683 WSG-8 Filters: Baader 8nm Ha and 8.5mm OIII Subframes: 19 x 900 sec OIII, 19 x 600 sec Ha Control: CCD Commander Capture: MaxIM DL Post-Processing: MaxIM DL and PS3
  4. Hi all After a frustrating time getting my head around which side of the pier to begin this image (the dreaded tripod leg collision dilema) I resorted to two nights of imaging for this one. Im very pleased with the results. Using EQMod / Stellarium scope to find the target, disable meridian flip and halt tracking just before the collision point! Canon 1000D / CLS Filter clip Skywatcher 250px Guiding with ToUcam Pro II 25x 5 min exposures Darks on the fly 30x Flats Thanks for looking
  5. From the album: CCD venture

    A h-alpha shot of the Wall section of NGC7000 aka north america nebula. ED80 - ATK16HR - Ha clip filter - EQ6 - finderguider 9x50mm PhD2 - photoshop - DSS.
  6. Hi all I'm still transitioning from an unmodified Canon 200D to an Altair Astro 183C pro. I think this might be my best image yet, and the first time I have tried a mosaic. Its made of two panels, each panel has 20x120s + 30x60s. Stacked and stitched in Astro Pixel Processor and edited in PS CC 2018. I'm pretty pleased! Scope is a SW ED80 DS pro (reduced to 480mm, f/6) on a HEQ5 pro. Guided with a QHY5L-II in my finderscope.
  7. My effort from Derry last night - once I remembered to remove the cover from the field flattener. Doh. I know the North America Nebula is done to death, but this is my first time imaging it, and also my first time trying the Triad filter with my Nikon. I'm in the middle of the city but I was able to take 5 min subs! I processed in PixInsight, but didn't even have to do background extraction. I used photometric colour calibration to restore natural colour and then just did a bit of mild tinkering. I'm impressed by the Triad filter on my first try. Comments welcome - maybe I should try a star mask and try to bring out star colours? Barry 22 X 5 min subs - 1hr 50min integration PixInsight for calibration / registration / processing Mount - Vixen AXD2 Scope - TEC 180FL Camera - Nikon D750
  8. Nice to have a few clear nights for a change! I finally managed to include some darks and flats . These are different versions of a set of 4 X 256s sub-frames. I think I prefer the less processed one (a) - the stars are less bloated. Any critique/advice welcomed! Borg 55FL f/3.6; Atik 490 EX colour
  9. From the album: Widefield DSO

    Large region of Cygnus presented in Hubble palette, or at least the nearest I can get to it.
  10. alan4908

    NGC7000

    From the album: Deep Sky

    My very first picture from East Sussex ! Bloated stars where the main challenge in this image and I attempted to tame them via the StarShrink PS plugin from Russell Croman. I wasn't using dithering at the time, so the raw images contain quite a few defects which I had to process out with PS. Taken in June 2015 with a Trius SX26C and SW ED80. LIGHTS: 20 x 600s; DARKS: 40; BIAS: 100; FLATS: 40.
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