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Found 5 results

  1. MarsG76

    Barnard 33 Region

    From the album: Deep Sky Imaging

    Horsehead and Flame nebulae around the star "Alnitak" in "Orion's Belt" in the constellation of Orion. The nebulae are located approximately 1350LY for Flame nebula and 1500LY for the Horsehead curtain glow nebula. Alnitak is a bit closer at about 1250LY and is the source of light for the glow of the nebulae. The Horsehead nebula is a cold dark nebula silhouetted against the pink hydrogen alpha emission nebula IC434. The Horsehead shape is just the shape of the nebula that blocks that part hydrogen emission of IC434. This image was taken using a full spectrum modded Canon 40D. Image consists of Hbeta, HAlpha and OIII data as well as RGB taken through IR cut and neodymium filters across multiple nights in November and December 2015.

    © Mariusz Goralski

  2. Greetings Astronomers, The work on imaging my next object has begun, and as always and common to us all, I have to juggle imaging between clouds and moon phases. This is 3 hours of halpha data of 900s and 500s subs captured the night before full moon and on the full moon night through a 7nm Baader Halpha filter using a modded Canon 40D DSLR. I'm hoping to spend a night imaging 30 minute subs (when the moon shrinks to last quarter or smaller) to try to capture some of the dimmest nebulosity as well as spend perhaps another night imaging 15 minute subs through a Baader 7nm OIII filter to see what difference adding OIII signal to the final color image will make. Before the moon was first quarter I've acquired 3 hours of usable RGB data across 2 mornings of 300 second subs. After stacking I realized that I need more RGB subs for enough SNR to stretch the data, so my plan is to perhaps spend another night of exposing 300 second subs but through a unmodded DSLR, once complete, I'll stack and process the RGB frames and add the narrowband data to it for a full color image. Sorry for the drawn out ramble... clear skies, MG
  3. MarsG76

    IC434 Nov2017

    From the album: Deep Sky Imaging

    This has been imaged through the NexStar 8SE on the CGEM mount. This was imaged in the native 2032mm focal length (F10) through a Baader UV/IR Cut and Halpha 7nm filters and recorded by my modded Canon 40D DSLR. I experimented with trying to capture some UV data through the Astrodon UV filter but it was a failure on the horsehead... I talked about it in another post, but I think that stacking the UV data into the rest pulled the stars back to white from the redness caused by the HAlpha data. I used PHD 2.6.4 to Autoguide for the first time and I have to say that I like PHD 2 a lot, highly recommended... it is very good, my guiding accuracy (according to PHD2) was between 0.5" and 0.8" arc sec... I found it easy to get to grips with. Total data amount was 81 subs, 75 used in this image... HII: 29 x 15 minute ISO1600 RGB: 13 x 10 minute and 25 x 5 minute ISO800 UV: 8 x 20 minute ISO3200 So total time spent on integration was 850 minutes

    © Mariusz Goralski

  4. MarsG76

    IC434 Nov2017 Crop

    From the album: Deep Sky Imaging

    This is a cropped image of the other Horsehead image which I imaged through the NexStar 8SE on the CGEM mount in the native 2032mm focal length and recorded by my modded Canon 40D DSLR. Total data amount was 75 used in this image... HII: 29 x 15 minute ISO1600 RGB: 13 x 10 minute and 25 x 5 minute ISO800 UV: 8 x 20 minute ISO3200 So total time spent on integration was 850 minutes

    © Mariusz Goralski

  5. Hi all, This image is the complete version of the Barnard 33 system HAlpha image I posted about 3 weeks ago. The Horsehead nebula intrigued me as a kid and this image and framing was something I wanted to photograph (or fantasized about photographing) in 1991 when I was a kid using a Tasco 60mmx900 refractor on a alt-az mount. So I guess I can say that this image is nearly 25 years in the making. I did image the horsehead in the past but not framed like this with the flame nebula. Just thinking back about pestering my parent to buy be a t-adapter/ring kit and a SLR "because I was going to photograph the sky like the pros..." Ha, lucky it was too expensive for them to splash out on, knowing what I know now, no pictures would have been taken, potentially a small fortune would have been wasted on film and developing, and even fast forwarding to the time when I restarted the hobby, digital was well in the main arena, so even the SLR, unless used for normal photography, would have been gathering dust... But of course as kids we knew everything, we knew it best.... where in reality we KNEW NOTHING AT ALL. How history keeps repeating... :-/ This image consists of RGB, HAlpha and Hbeta, as well as OIII subs taken across November and December last year. The Hbeta and OIII only had a bit of data of the flame nebula and only Hbeta showed a bit of the horsehead nebula. Looking at the subs I do say that imaging Barnard 33 through Hbeta or OIII filters is not necessary and I think the image would look no different without spending the nights capturing those subs. Hope you all like it, I'm happy how it turned out by using a modded, uncooled DSLR. Clear skies, MG
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