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Calypsob

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About Calypsob

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    Nebula

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    USA
  1. Hello I wanted to share some recent work of M45 from 1/8/2018 Here we have the Pleiades aka Messier 45, bathing amongst the very faint golden galactic cirrus which spans across the constellation of Taurus. The dust that you see here is actually not emitting light but rather reflecting. It is partially illuminated by the bright 7 stars within the Pleiades and additionally illuminated by our milky way galaxy. I am unclear of the distinction between IFN and galactic cirrus, Galactic cirrus seems to be closer to the core of the milky way. IFN and Galactic cirrus both actually appear in IRAS and Planck thermal dust surveys. Regarding molecular structure, I have read that IFN is comprised of Polycyclic Aromatic Hydrocarbons which are essentially leftover burned up carbon remains. The IFN reflects light predominantly at 540nm up through 950nm according to Mandel Wilson. Capturing Galactic cirrus and the bluish gray dust surrounding the pleiades requires very dark skies and deep integrations of data which must be carfeully processed. I am not 100% happy with this image yet and there may be a few more renditions, but I hope you enjoy what I have presented. Equipment and image capture: Cameras: Tandem Canon DSLR Full Spectrum modded T2i Unmodded T3i Lenses: Samyang 135mm F2 on each camera Filter: T2i only, Astronomik Clip Luminance L3 Light frames: 468 Exposures:30s Iso: 1600 Darks: 70 Flats:200 Bias: pre established master Seeing was 4/5 Transparency 5/5 Temp 25f SQM 21.6 Data was Fully Claibrated, stacked and registered in Pixinsight. Then partially processed between Pixinisght and Photoshop CC 2018 Messier 45 - 1/8/2018 by Wes Schwarz, on Flickr
  2. Calypsob

    California HA

    Thats incredible. Did you drizzle this data? The fine Ha structures located in the faint wisps of the edges are all over the place. Very awesome, great acquisition and processing.
  3. I have some lrgb planetary data sets and decided to manually dither between each filter so my images do not line up, is there a way to register the 3 colors and then combine them?
  4. Im curious, can you lock down the axises with a clutch?
  5. Calypsob

    Star Adventurer Tripod Recommendation

    I was going to suggest a zeq25 tripod which weighs about 5lbs. These are even smaller and probably weigh 3-4lbs and could go in a bag. You will be hard pressed to find a photo tripod that can match the sturdiness of this one for the price http://www.highpointscientific.com/ioptron-smarteq-tripod-skytracker-tripod-3221?utm_source=google&utm_medium=cse&utm_term=IOP-3221&gclid=Cj0KEQjwp83KBRC2kev0tZzExLkBEiQAYxYXOocFlBiI8zcIoBOVUtKT3-jt9-Glqu1dicBccHxEATgaAjaR8P8HAQ
  6. Calypsob

    Ideal 300mm Lens for DSO work

    Thanks, I am trying to figure out why there would be such a big difference between the 67 edif and the 645 edif. I know that 67 is an even wider format. Maybe that is why it corrects color better, because the central sweet spot is bigger.
  7. Calypsob

    Ideal 300mm Lens for DSO work

    Yes, pentax 645 is medium format.
  8. Hello I am looking around for a good 300mm lens to image with. I want to shoot at F4 and I need to keep the cost below $700 if possible. I posted another thread on cn requesting .cr2 image samples with the canon 300mm ef, but after looking around I am open to explore other options as well. I notice alot of the 300mm lens images on astrobin come from European countries so I figured I might get some good opinions on here. Ideally I want a lens that can shoot wide open at F4 without any coma or chromatic abberations. A 300mm F2.8 stopped down to F4 would be fine as well. I looked at the older nikkor 300mm f2.8 ed series and it seems that the images are on par with the Canon ef 300mm F4 L. There is a pentax 645 edif green star which unfortuantely seems to fall a bit short in regard to color correction, while the newer but very expensive version with a gold ring, color corrects even the 5DSR out to the edges without coma or chromatic abberation. Those are really the only lenses I have looked at. Can anyone recommend anything else that performs well at 300mm F4 ?
  9. Thanks everyone, I was pretty pleased with the results of such a short integration.
  10. 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
  11. I forgot to share this one last month. Between travel for business and brutally cold weather closing down my nearby imaging location in the mountains I have not had time to image this year. This was taken at the beginning of December and contains a very busy wide field splitting the constellations Taurus and Perseus. The better known DSO's are M45 the Pleiades reflection nebula and NGC 1499 the California emission nebula. The center of the image contains a dark nebula which I am not familiar with and the rest of the region is quite heavily laden in ISM interstellar medium dust. This image was taken with my unmodded T3i Information about this image camera: unmodded T3i ISO:1600 Exposures: 102 x 100s Darks: 5 ugh, mishap Bias:450 frame master Flats:35 Lens:SMC Pentax M* 50mm F1.7 stopped to F4 SQM: 21.1 Seeing: 3/5 Transparency:3/5 Calibrated and partially processed in Pixinsight and finished off in Photoshop CC 2017. M45 and California by Wes Schwarz, on Flickr
  12. nicely done! which lens was this?
  13. Well I did not want to repost his work without permission. The image I was referring to is actually shot at a wider field, i think 24mm
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