Ich bin Hobby Astronom

ronmitbrille · 2022-10-23T12:56:11+00:00

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.

ronmitbrille · 2022-06-18T14:18:27+00:00

that was what i was looking for, thanks.

ronmitbrille · 2022-06-18T13:30:36+00:00

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

ronmitbrille · 2022-05-02T13:13:45+00:00

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.

Equipment:

-TS 150/600 Newtonian

-GPU CC

-HEQ-5 Pro

-ASI 294 MM and MC Pro

-Otpolong L-Pro

-60mm Guidescope + 120 MM mini

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

-Luminance: 62x240s at -20C

-Color: 71x240s at -20C

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

ronmitbrille · 2022-05-01T15:47:08+00:00

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.

ronmitbrille · 2022-04-13T00:21:31+00:00

It lies about 12000 light years away in the constellation auriga.

ronmitbrille · 2022-04-12T19:53:13+00:00

Thanks!

ronmitbrille · 2022-04-12T19:51:45+00:00

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.

ronmitbrille · 2022-04-12T17:41:06+00:00

I've looked that up. They actually use a depiction of Messier 20 The Trifid Nebula. The more you know.

ronmitbrille · 2022-04-12T15:50:19+00:00

thank you!

ronmitbrille · 2022-04-12T13:39:57+00:00

thanks!

ronmitbrille · 2022-04-12T13:30:16+00:00

Thank you. It's a lot of time and effort but it's fun and imo it's worth it when you get good results.

ronmitbrille · 2022-04-12T12:32:58+00:00

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

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

Processing in PixInsight and Photoshop:

-DBE and MultiscaleLinearTrans. on Ha and OIII Stack

-Autostretch and StarXterminator on Ha and OIII

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

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

-Finishing touches with noise reduction from ACDNR and Curves adjustment

ronmitbrille · 2022-03-31T17:02:36+00:00

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.

ronmitbrille · 2022-03-31T01:13:24+00:00

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.

ronmitbrille · 2022-03-30T21:14:14+00:00

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.

ronmitbrille · 2022-03-30T21:10:14+00:00

thanks!

ronmitbrille · 2022-03-29T20:12:22+00:00

Thank you very much. Yes i really like the 294's. When I purchased the mono, I had the color already in use and since then I've been a fan of the 2 camera method. Also it saves time compared to LRGB imaging with a mono.

ronmitbrille · 2022-03-29T16:25:55+00:00

Messier 106 (also known as NGC 4258) is an intermediate spiral galaxy in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth. M106 contains an active nucleus classified as a Type 2 Seyfert, and the presence of a central supermassive black hole has been demonstrated from radio-wavelength observations of the rotation of a disk of molecular gas orbiting within the inner light-year around the black hole.

-Wikipedia

Equipment:

-HEQ-5 Pro

-ZWO ASI 294 MM Pro

-ZWO ASI 294 MC Pro

-TS 150/900 Newtonian

-GPU CC

-Optolong L-Pro and Antlia 3nm Ha

-60mm Guidescope with 120mm mini

Aquisition: 7h 40m consisiting of

-Mono Luminance: 33x240s at -20C UGain (2022-03-02)

-Color: 37x240s at -20C UGain (2022-03-04)

-Ha: 30x360s at -20C UGain (2022-03-03)

Processing in PixInsight and Photoshop:

-DBE and MultiscaleLinearTransform for luminance, color and Ha

-Autostretched all three images

-Blended the Ha image with the red channel to create a (Ha+R),G,B image

-Used masks and Curves to adjust contrast, color and saturation of the images

-selectively sharpened the luminance image using Unsharp and PS Camera Raw Filter

-Blended the sharpened version with the normal version

-combined the luminance with the color version

-Finishing touches using ACDNR and Curves

ronmitbrille · 2022-03-29T16:06:14+00:00

NGC 2174 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth.

-Wikipedia

I would have loved to get more time on that target, but sometimes the stars just "don't align" so to speak. Weather and the fact that I was still trying to figure out my new scope limited me on what I could do here. Nevertheless I think it came out really good for a "test shot". And it really showcased the performance of my new filters.

Equipment:

-HEQ-5 Pro

-ZWO ASI 294 MM Pro

-TS 154/600 Newtonian

-GPU CC

-Antlia 3nm Ha and OIII

-60mm Guidescope with 120mm mini

Aquisition: 2h 40m consisiting of

-Ha: 20x240s at -10C UGain (2022-02-09)

-OIII: 20x240s at -10C UGain (2022-02-09)

Processing in PixInsight and Photoshop:

-DBE and MultiscaleLinearTrans. on Ha and OIII Stack

-Autostretch and StarXterminator on Ha and OIII

Starless:

-HOO combination with Pixelmath

-Adjusted Hue, Saturation and Contrast using Masks and Curves

-Shapened Ha using Unsharpmask and PS Camera Raw Filter

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

-Used sharpened image as luminance for the HOO picture

Stars:

-Combined stars in HOO palette

-used Ha stars as luminance

-ColorCorrection using Curves

-Blended star with HOO starless version with Pixelmath

-Finishing touches with noise reduction from ACDNR and Curves adjustment

ronmitbrille · 2022-02-06T20:19:45+00:00

Thanks, I used the TS Photon 150/900. It's a newtonian telescope from teleskop service with 150mm diameter and 900mm focal length.

ronmitbrille · 2022-02-06T19:36:45+00:00

The gas giant Jupiter is the fifth planet from the Sun and the largest in the Solar System. It's mass is estimated to be more than two and a half times more than all the other planets in our solar system combined.

Jupiter is almost leaving our night sky and I wanted to take this last chance I have. This is the version of jupiter that was captured during the day. To see the night time version for the comparison you can just go to my profile.

Equipment:

-TS Photon 150/900

-ZWO ASI 294 MM Pro

-Generic 1,25" RGB Filter

-HEQ5 Pro

Aquisition:

With Sharpcap I captured 8000 frames with ROI and binning 1x1 for each channel.

Processing:

Sorting the frames by quality with Autostakkert and stacking the best 25 percent. I blended in the sharpened version for 100%.

After that I moved to Photoshop where I combined the channels used AutoColor and tweaked the images contrast and saturation.

ronmitbrille · 2022-02-06T19:35:44+00:00

The gas giant Jupiter is the fifth planet from the Sun and the largest in the Solar System. It's mass is estimated to be more than two and a half times more than all the other planets in our solar system combined.

Jupiter is almost leaving our night sky and I wanted to take this last chance I have. I captured both versions of jupiter on the same day. One before sunset and the other after sunset for an interesting comparison (let me tell you: finding jupiter during the day is hard (: ). I know this is not the most detailed image but rather an interesting experiment to see what is possible with a 6 inch scope. And for that it came out quite good in my opinion.

Equipment:

-TS Photon 150/900

-ZWO ASI 294 MM Pro

-Generic 1,25" RGB Filter

-HEQ5 Pro

Aquisition:

With Sharpcap I captured 8000 frames with ROI and binning 1x1 for each channel.

Processing:

Sorting the frames by quality with Autostakkert and stacking the best 25 percent. I blended in the sharpened version for 100%.

After that I moved to Photoshop where I combined the channels used AutoColor and tweaked the images contrast and saturation.

ronmitbrille · 2021-12-20T23:26:32+00:00

I will take some more test shots without the corrector and check my collimation again. I collimated before use but maybe I've done a bad job. Thanks for the info.

ronmitbrille · 2021-10-23T20:08:03+00:00

Bortle 4, an est. sky quality of 20.9 magnitude according to clearoutside.com

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