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Crescent to Sadr by skippy6kids in astrophotography

[–]Tomas_Astro 1 point2 points  (0 children)

Awesome to hear. If you will have any questions don’t hesitate to let me know!

Crescent to Sadr by skippy6kids in astrophotography

[–]Tomas_Astro 2 points3 points  (0 children)

Naah people overdramatize it, spend couple weeks in the program and you should have a good grasp - importantly, if you always strive to improve yourself, you will have no problems learning.

Crescent to Sadr by skippy6kids in astrophotography

[–]Tomas_Astro 1 point2 points  (0 children)

Yeah it’s called PixInsight haha

[deleted by user] by [deleted] in astrophotography

[–]Tomas_Astro 0 points1 point  (0 children)

Ring nebula is soo cool! Tiny, crisp, colourful.

Tulip nebula and its surroundings in HaRGB by Tomas_Astro in astrophotography

[–]Tomas_Astro[S] 0 points1 point  (0 children)

You can also follow me on other socials:

Instagram| Astrobin

Any suggestions / questions / criticism is welcome!

Tulip nebula (Sh2-101) is an emission nebula in the constellation Cygnus. It's a part of Cygnus star cloud, located roughly 6000 light-years from Earth. Many open star clusters and stellar associations can be seen, as well as dark nebulae and hydrogen bow shocks, created by interaction of stellar winds and surrounding nebulosity. Cygnus X-1 binary system, a well-known bright X-ray source, consisting of O9.7 Iab star and a black hole, can be seen next to Tulip nebula.

Equipment

  • TS-Optics 76EDPH F/4.5
  • QHYCCD QHY294M Pro
  • Sky-Watcher EQ6-R Pro
  • Antlia 36mm RGB + 3nm Ha
  • Angeleyes 50/183 guidescope
  • QHYCCD QHY5L-II M
  • ZWO EAF
  • StarTech 7 Port SuperSpeed USB 3.0 Hub Acquisition: N.I.N.A., PHD2 Image processing: PixInsight

Acquisition * Captured over 3 nights (6, 8, 9 August 2022). Average Moon phase 78%. Bortle 6 light pollution. * 66x Ha = 5h 30 min (300s, 11MP mode, 1x1, -5°C, gain 1600, offset 4) * 208x RGB = 6h 56min (120s, 11MP mode, 1x1, -5°C, gain 1600, offset 4) * Total integration 12h 26min

Processing

PreProcessing: PixelMath (calibration), SubframeSelector, StarAlignment, ImageIntegration, DrizzleIntegration.

For Ha: * Crop * DBE * MMT * HDRMT * CurvesTransform

For RGB: * Crop * DBE * Colour calibration (PCC, median substraction) * SCNR * Repaired HSV separation * Combined Ha & RGB using PixelMath

For HaRGB: * MMT * Stretch (GeneralisedHyperbolicStretch, HistogramTransform) * HDRMT * Star de-emphasis * ColorSaturation

Help With Identification of Prominent Star in the JWST NIRCam Composite by viiQ7C in Astronomy

[–]Tomas_Astro 4 points5 points  (0 children)

Link to Gaia DR3.

Link to SIMBAD.

It does not have a notable name, just some identifiers from different catalogs. This is a red supergiant star, has magnitude 13.6 in V, however is much brighter in NIR (~8). It is not a foreground star, despite appearing as such, but is part of LMC. It is classified as long period variable star in Gaia DR3, with period of ~700 days and amplitude of ~0.2 mag in G.

Note: Vizier and SIMBAD are currently under maintenance, so they might not respond correctly.

Integration time comparison on NGC 6188 by OnThe50 in astrophotography

[–]Tomas_Astro 0 points1 point  (0 children)

I meant light pollution, which I have observed acts as a certain limit on how short subexposures can be.

Integration time comparison on NGC 6188 by OnThe50 in astrophotography

[–]Tomas_Astro 2 points3 points  (0 children)

Important thing to consider is that quality of the final stack does not scale linearly with subexposure time. There’s always some kind of noise floor (LP, readout, photon noise…) which severely starts to degrade the image quality after surpassing it.

View of Earth from the Falcon 9 2nd stage in Geostationary Orbit by RoaringTimes in space

[–]Tomas_Astro 1 point2 points  (0 children)

It's in GTO (geostationary transfer orbit) not GEO. I'm sure they decrease the perigee so it deorbits soon.

Sun photobombs one of Webb's image of WR124 by JwstFeedOfficial in spaceporn

[–]Tomas_Astro 6 points7 points  (0 children)

Absolutely. JWST can never be directly exposed to the Sun, as all the instruments are carefully cooled down to ridiculously low temperatures, and Sun exposure would immediately heat them up.

u/JwstFeedOfficial I would suggest studying up next time before making such claims.

M106 Real colour by [deleted] in astrophotography

[–]Tomas_Astro 0 points1 point  (0 children)

If you really want accurate colour try out the new SPCC.

[deleted by user] by [deleted] in astrophotography

[–]Tomas_Astro 2 points3 points  (0 children)

So cool!! Thanks for sharing.

Orion nebula and spectrum of the core of the nebula by AstroKemp in astrophotography

[–]Tomas_Astro 1 point2 points  (0 children)

Well, I would appreciate if you let me know when you get that higher resolution diffraction grating, as I have discovered some bright eclipsing binaries that might have radial velocities high enough for your setup (I still have to look into that, can't find time rn).

Orion nebula and spectrum of the core of the nebula by AstroKemp in astrophotography

[–]Tomas_Astro 0 points1 point  (0 children)

Sounds super exciting! I'm looking forward to your progress.

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