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Found 7 results

  1. I've been interested in imaging the ionisation band in the Pelican Nebula for a long time so decided to make it an early Summer project. Started in May but holiday and other fun stuff meant I missed the great run of clear nights in July. When I did get out I was usually plagued by high cloud so it's been a disappointing trawl of data in the end but I did manage a couple of decent nights recently. Camera: QSI 532 ws with SX AO Scope: LX 200R with 0.63 reducer @ F7 Filters: Baader 7nm Ha, OIII and SII Subs: Ha 10x1800secs OIII and SII each 2x1800 secs 4x900 secs binned x2 and 3x300secs binned x2 Captured, calibrated and combined with Maxim. Deconvolved in CCDStack and completed in PS using Ha for luminence and colours assigned as per Hubble Palate
  2. From the album: Deep Sky II

    I've never tried imaging the Pelican Nebula in narrowband before so this was my first attempt. Since it was nearly a full moon I decided to limit the image capture to Ha data. This was also my first image after my recent adjustment of spacing between my field flattener/reducer and CCD (according to CCDInspector, the aspect ratio of my stars is now more consistent which I took to be a good sign). The image is processed via a combination of smartsharpen, noise reduction, unsharp mask, High Pass Filter and HDR toning. I was quite impressed by the HDR toning effect on the lighter parts of the image. I like the overall result, particular the details and the slight 3D effect. LIGHTS: 8 x 1800s Ha; FLATS: 40; BIAS: 100; DARKS: 30 all at -20C.
  3. In June, I managed to get just over 11 hours data for an SHO Pelican Nebula. SGP's Framing & Mosaic wizard makes it relatively straightforward to plan mosaics built upon an existing image. This, therefore, is a two-panel mosaic of the North America and Pelican nebulae in SHO captured using my dual WO Star 71 Rig. Details WO Star 71 x 2 Moravian G2-8300 x2 Mix of Astrodon and Chroma filters Ha - 32 x 12000s = 10 hours 40 mins OIII - 24 x 1200s = 8 hours SII - 24 x 1200s = 8 hours That's 26 hours 40 mins total I built the mosaic using a trial version of AstroPixel Processor. (I also did it in PixInsight, but APP seemed to give me more usable area on the combined panels.)
  4. Back in early June, I collected 5 and a bit hours of Ha using my dual WO Star 71 Rig - https://stargazerslounge.com/topic/295500-pelican-in-ha-first-real-test-of-dual-rig/. The plan was to collect 5 hours of each of SII and OIII to go with the Ha. I got 3 hours of each (simultaneously) by the end of June and since then the weather has not played ball. So, I decided to go ahead and process what I had. Those Star 71s give a good wide field. This is WO STar 71 x 2 Moravian G2-8300 x2 Mix of Astrodon and Chroma filters Ha 5hours 20 minutes OIII 3 hours SII - 3 hours That's 11 hours 20 mins total:
  5. Well it was a good night, weather-wise, last night (12-Nov-2017) in this part of Oxfordshire. Cool (3 degrees) but amazingly dry, really (85%.) And so, for once, everything wasn't covered in dew by the end of the night. After an earlier debacle with coma-corrector spacing, I've shaved off a further 0.5mm to try and tweak it a bit better, but I've also (for my sins) started a trial period with PI. I've so far eschewed this box of tools in favour of simpler, and some home-grown, things. But I'm interested in finding out more about what so many people use... even if only to understand the PI-speak language a bit better. As a result of all this, I want to try things out on some smallish datasets, and ended up with: Crescent, 12 x 300s (60 min) Pelican, 17 x 300s (85 min) Iris, 12 x 300s (60 min) Horsehead, 6 x 300s (30 min) Quattro 8" on Avalon M-Uno, QHY8L OSC, captured, guided, and dithered, by Nebulosity, pretty poorly processed in PI (my fault, not its) including bias, darks, and flats. Some observations about the images: Crescent... a difficult RGB target, I've tried but failed to reduce the background stars Pelican... just a bit too big for the frame, but the extra data (more than 60 mins) helps with noise Iris... real problems with the background. The APS-C sensor is just a bit too big for this scope? Horsehead... my first ever attempt at this. Pleased to have resolved the Alnitak double. Sad to have framed it so poorly for the Flame. No doubt the processing is very ham-fisted for my first use of PI, so any C&C is positively encouraged! Thanks for looking.
  6. Hello, Here is my version of the Pelican Nebula. Data capture done during several nights from the 14th august to 22nd September 2017. Location, country side one hours drive south of Copenhagen. HA 5nm: 47 x 600 second subs, moon lit nights. OIII 3nm: 29 x 600 second subs, no moon. SQM 21.10 SII 3nm: 37 x 600 second subs, no moon SQM 21.30 Total exposure: 18 hours 50 minutes Calibrated and stacked followed by deconvolve and DPP in Maxim. Layered as Hubble palette and final curves in Photoshop. Reduction of magenta saturation and lightnes to adjust star color in the flattened image. Equipment: Mesu200 mount. 10" Skywatcher Quattro, Atik 460m camera and Astrodon filters. Offaxis guided. Link to full resolution: https://drive.google.com/open?id=0B-WsltPPgG5JeXFIZnA5d3ZkYmc Thanks for watching.
  7. I'm back - into DSO imaging After a couple of years away due to the weather and other things I have myself a new imaging rig for widefield. Trying the new ZWO ASI1600MM-Cool CMOS camera in conjunction with Asahi Super Takumar 135mm f2.5 lens and Atik AFW2 filter wheel. EQ8 mount looking huge in comparison Friday night into Saturday morning gave me lovely clear sky for several hours and after a few very short trial runs I was able to grab my first decent imaging run for ages. All subs were 30s exposure with lens at full aperture, no guiding. Taken with Astrodon 5nm Ha filter. Software (still in Win7) was CdC plus EQMOD ASCOM for mount control and APT for image capture, followed by DSS and Photoshop for image processing. I captured 8 subs of the North American and Pelican Nebulae and 53 subs of the Cygnus Loop though DSS only chose 4 and 26 respectively in spite of much fiddling with the settings. Both stacks were cropped to the DSO area with the Cygnus Loop rotated to fit the screen better. Then these images were histogram stretched in Ps plus Enhance DSO & Reduce Stars and Space Reduce Noise applied to the Cygnus Loop. The images still being at least twice the maximum size allowed for posting here, size was reduced to 1200px in the biggest direction. Saved in PNG format.
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