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Found 5 results

  1. I am slowly getting things together for my dual rig. Hopefully, St Williams of Optics will one day grant me an audience and deign to send me a second of his scopes (the 'offering' has certainly been made). But there is enough to be getting on with, making sure the mount, computers and so on all work. I thought I may as well point at something interesting whilst doing this, and it had been a while since I tried M81 and M82. I managed to get 4 hours 10 minutes of Lum (which I was reasonably happy with). I managed 1 hour each of Red and Green. I would have had 1 hour of Blue too, if Sequence Generator Pro hadn't taken umbrage at the clock change last weekend. So I only got 50 minutes of Blue. I may try to double the integration on the colours at some point, but this will have to do for now. I wondered if with 250 minutes Lum, I might be able to see some of that IFN stuff that everyone seems to get in their images. I got a bit of it. I did push it harder, but the image started to fall apart. I hope this is a reasonable balance. This is a WO Star 71 and a Moravian G2-8300 mounted on a Skywatecher EQ6-R (which, according to PHD2, is performing much better than I expected it to). Only 7 hours total exposure through the WO Star 71. I pinched some Ha from a larger scale mosaic I am trying with my Esprit 120. That is 5 hours each over two panels. So I suppose I should call it 12 hours total integration. Oh - SSE? I have been posting a few images from Deep Sky West, but this is from my home observatory which I have taken to calling 'Shallow Sky East'.
  2. Hi guys! I've finally decided it's time to stop playing with the data from my AG12 first light and come up with a final result from the processing. The AG12 from Orion Optics UK is a carbon fibre newtonian astrograph. With 300mm aperture, and a blazing fast focal ratio of f/3.8, it really gives an interesting match to my QSI 583, landing at an image-scale of 0.98 arcsec/pixel, and still superfast so no need to bin(yuck) the camera to achieve the desired pixelscale and speed. This gives me really high resolution and still a relatively wide field of view compared to other rigs sporting this resolution. Unfortunately I wasn't able to drive out to the obsy & give the scope the collimation and ccd/corrector-distance tuning needed due to a knee-injury, but it performed quite fine even though the ccd/corrector spacing was off with 4-5mm (!) One of my main goals with this image was to try to lure out the überfaint IFN (Integrated Flux Nebulae) lurking in the background between these two famous galaxies (sidenote: the IFN is in our galaxy). I found it very difficult to reach a natural balance between mega-stretched background IFN and more realistic stretch of the galaxies, so I ended up with two versions, one where I held back on the background to give the whole image the kind of look I prefer in images, and one version where I stretched away, the disney-version. And of course, annotated versions of 'em both. The Scope: Orion Optics AG12 Aperture: 12" Focal lenght: 1140mm Focal ratio: f/3.8 Imaging scale: 0.98" / pixel together with my QSI 583 The Mount: 10 Micron GM 2000 HPS All subs unguided The Camera: QSI 583 wsg (with 8-position filterwheel upgrade) Filters: Astrodon The Subs (unguided): Lum: 41 * 5 min RGB: 11 * 5 min each channel Ha: 12 * 10 min Click images for full-res version: Click images for full-res version: And the annotated ones: Hope you enjoyed the first look, I can't wait to try the scope out with the correct tuning! Best Regards Jonas Grinde
  3. Here is a recent image taken with two dslr's side by side, one mono and one color. both using Samyang 135mm F2 at F2 104x40s mono 60d iso1600 -69.3 minutes -CLS CCD filter 104x50s RGB 550d iso 1600 -86.66 minutes uv/ir cut filter SQM 21.5 Transparency 5/5 Seeing 1/5 RGB version M81 M82 integrated flux nebula by Wes Schwarz, on Flickr
  4. Hi Everyone, This is my best M42 image till date. Every year I take a shot at this wonderful object and every year it teaches me something new. I started using Pixinsight only two days ago and the results are dramatic. I do take more care while processing and it has given me wonderful results. C&C welcome.
  5. This image is a continuation of an image I made in 2014 of the M81/82 galaxy group. I made the images and found signals of integrated flux nebula surrounding the galaxies. Soon after that I got in touch with Neil Fleming who had a splendid image of the IFN in this region on his website and a fellow astrophotographer, Michael Van Doorn, who had imaged the galaxies using his hyperstar setup. We decided to combine the data and create a deep field of this region. The lower magnitude visible is around mag. +24 in this image! Because of the long period of bad weather I decided to do some reprocessing on previously made images and decided to see if I could get even more out of this image. I think the result is astonishing. As far as I have found this is the deepest image of this region that I could find on the internet. The IFN really stands out very clearly and it's nice to see details like Arp's loop at M81 really jumping out to the image.... Image details are visible in the image. M81/82 Ultra deep field :) by Andre van der Hoeven, on Flickr
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