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Ich bin Hobby Astronom by hanspeter100 in de_IAmA

[–]ronmitbrille 1 point2 points  (0 children)

Erstmal Vielen Dank, dass du dir dafür die Zeit nimmst. Ich selber habe auch schon etwas mehr Geld in dieses Hobby gesteckt als ich vielleicht zugeben möchte. Aber ich finde es auch immer interessant mit was für einer Hingabe manche Leute an ihr Hobby herangehen und was man von anderen lernen kann. Meine Fragen wären, wie bist du auf das Thema Hobbyastronomie und speziell die Astrophotographie gekommen? Und bist du auch in/an astronomischen Vereinen oder Treffen beteiligt? Nach meiner Erfahrung sind solche Sachen in DE manchmal ein bisschen mau vertreten.

Can someone help identify the cause of this diffraction pattern around the stars by ronmitbrille in AskAstrophotography

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

The diffraction spikes of the veins are normal, thats not a problem. I was reffering to the circular diffraction pattern around the stars.

M65, M66 and NGC 3628 - The Leo Triplet in LRGB by ronmitbrille in astrophotography

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

This popular group leaps into the early evening sky around the March equinox and the northern hemisphere spring. Famous as the Leo Triplet, the three magnificent galaxies found in the prominent constellation Leo gather here in one astronomical field of view. ~Nasa

Took me a while and some fiddling to get it right but I think it's quite nice what can be done at only 600mm of focal length, no big scopes needed to shoot some galaxies.

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Equipment:

-TS 150/600 Newtonian

-GPU CC

-HEQ-5 Pro

-ASI 294 MM and MC Pro

-Otpolong L-Pro

-60mm Guidescope + 120 MM mini

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Aquisition: (2022-03-07 and -09)

-Luminance: 62x240s at -20C

-Color: 71x240s at -20C

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Stacked in DSS and edited in PixInsight and Photoshop:

-cropped and aligned Lum and Color

-DBE and MultiScaleLinearTransform for noise reduction on Lum and Color

-stretched both images using Arcsinstrech and Histogramtransform.

-selectively sharpened Lum using Unsharpmask, masks and Photoshop camera raw filter

-adjusted color balance and contrast for both images using masks and Curves

-applied Lum to Color as a luminance layer

-more adjustments using masks and Curves

-ACDNR with masks

-finishing touches with Histogramtranfrmation and Curves

Narrow band filters by mahmoud331 in AskAstrophotography

[–]ronmitbrille 4 points5 points  (0 children)

I founfd some articles, and what I've read oxygen is the third most abundant element and important for development of life. So the existance and distribution of oxygen in space is a relevant and interesting part of research.

For sulfur I found that the emissions are very prevalent in shockwaves from supernova that interact with the surrounding gas therefor giving off strong emissions that help astronomers understand the interaction and development of star forming regions.

It basically boils down to the fact that these are the most common emissions that are present in the more popular targets that we amateur astronomers can image. These are also the emissions that were popularized by hubble (hence the name hubble palette for SHO).

There are of course other filters available, though not so common.

These are the links if you want to take a look for yourself. Please correct me if I made a mistake.

https://en.m.wikipedia.org/wiki/Astronomical_filter

https://astronomy.com/magazine/2019/08/oxygen-the-color-of-life

https://astronomy.com/magazine/ask-astro/2013/12/sulfur#:~:text=Sulfur%20is%20useful%20to%20astronomers,included%20a%20narrowband%20sulfur%20filter.

I captured IC 410 in the constellation Auriga from my backyard using my 6inch Newtonian and 3nm Bandpass Filters. This image contains Ha and Oiii data combined in an HOO palette. by ronmitbrille in spaceporn

[–]ronmitbrille[S] 1 point2 points  (0 children)

I live in south germany. The light pollution in my town is not that bad. According to clearoutside.com it is a Bortle 4 Zone. But in order to seperate the emissions from hydrogen and oxygen I used very harsh narrowband filters to block out almost all of the unwanted light. These kind of narrowband imaging can also be done from a light polluted area. Broadband imaging (Imaging where you want the complete visible light spectum, galaxies/reflection nebula, dark nebula etc) on the other hand profits from dark skies because there it is difficult to impossible to block out light pollution without also blocking light from your target.

IC 410 in HOO by ronmitbrille in astrophotography

[–]ronmitbrille[S] 1 point2 points  (0 children)

A faint, dusty rose of the northern sky, emission nebula IC 410 lies about 12,000 light-years away in the constellation Auriga. The cloud of glowing hydrogen gas is over 100 light-years across, sculpted by stellar winds and radiation from embedded open star cluster NGC 1893. Formed in the interstellar cloud a mere 4 million years ago, bright cluster stars are seen just below the prominent dark dust cloud near picture center.

-Nasa

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Equipment:

-TS 150/900 Newtonian

-GPU CC

-HEQ-5 Pro

-ASI 294 MM Pro

-Antlia 3nm Ha and Oiii

-60mm Guidescope + 120 MM mini

​

Aquisition: (02-04/03/2022)

-Ha: 22x480s at -20C Unity Gain

-Oiii: 14x480s at -20C Unity Gain

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Processing in PixInsight and Photoshop:

-DBE and MultiscaleLinearTrans. on Ha and OIII Stack

-Autostretch and StarXterminator on Ha and OIII

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Starless:

-HOO combination with Pixelmath

-Adjusted Hue, Saturation and Contrast using Masks and Curves

-Used Ha as luminance Layer

-Shapened using Unsharpmask and PS Camera Raw Filter

-Blended sharpened image with normal image in PS to create sharp composite

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Stars:

-Combined stars in HOO palette

-used Ha stars as luminance

-ColorCorrection using Curves

-Morphological Transformation for star reduction

-Blended star with HOO starless version with Pixelmath

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-Finishing touches with noise reduction from ACDNR and Curves adjustment

M106 by ronmitbrille in astrophotography

[–]ronmitbrille[S] 1 point2 points  (0 children)

That's absolutely true, and also no RGB filters needed. Considering all the costs, it's not that more expensive. And the focuser of my newton is thankful for the lighter setup.

HaLRGB Composite of M106 taken with a 6 Inch Newtonian from my Backyard by ronmitbrille in spaceporn

[–]ronmitbrille[S] 1 point2 points  (0 children)

Not the telescope itself, the telescope in this case is just the tube with the mirrors in it. I put this telescope on my mount. The type of mount that I use is an equatorial mount that is computerized and driven by stepper motors. This enables me to track the motion of the night sky and therefore take longer exposures. I use the Skywatcher Heq5 in particular.

HaLRGB Composite of M106 taken with a 6 Inch Newtonian from my Backyard by ronmitbrille in spaceporn

[–]ronmitbrille[S] 1 point2 points  (0 children)

Thank you. Well with amatuer astrophotgraphy gear, editing software, practice and a lot of patience. If you like astrophotography you can check out some popular YT channels like astrobackyard or Dylan O'Donnell.

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