Takahashi FSQ106ED and Bortle 2/3 skies

Using SharpCap for other Astro Imaging such as all sky cameras and meteor detection
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oopfan
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Takahashi FSQ106ED and Bortle 2/3 skies

Post by oopfan » Tue Jul 21, 2020 11:30 pm

I didn't take these. I downloaded them. They were taken at a remote site in Spain with a Takahashi FSQ106ED at f/3.6 and a QSI camera.
We can dream can't we?

These are single frames: one each of Ha, R, G, B with exposures 600s, 900s, 900s, 900s, respectively.

Brian
horsehead-1x600s-Ha-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg
horsehead-1x600s-Ha-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg (101.73 KiB) Viewed 104 times
horsehead-1x900s-Red-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg
horsehead-1x900s-Red-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg (123.89 KiB) Viewed 104 times
horsehead-1x900s-Green-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg
horsehead-1x900s-Green-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg (115.42 KiB) Viewed 104 times
horsehead-1x900s-Blue-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg
horsehead-1x900s-Blue-bin1-Pier6-Takahashi-FSQ106ED-f3.6.jpg (109.34 KiB) Viewed 104 times

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turfpit
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Re: Takahashi FSQ106ED and Bortle 2/3 skies

Post by turfpit » Mon Jul 27, 2020 9:58 pm

Brian

I downloaded the data from the home page and spent 2 days developing my APP skills. Incredible detail from Bortle 2/3 skies. As usual with imaging, no gain without pain. This is what I managed to produce.

IC434-HaLRGB_R-12x900s_G-9x900s_B-12x900s_Ha-20x600s.jpg
IC434-HaLRGB_R-12x900s_G-9x900s_B-12x900s_Ha-20x600s.jpg (226.24 KiB) Viewed 70 times

IC434_Ha-20x600s.jpg
IC434_Ha-20x600s.jpg (142.55 KiB) Viewed 70 times


I had to experiment stacking different numbers of RGB frames in order to get the colour balance right. Also a synthetic L frame was generated by combining Ha, R, G, B stacks, described here https://www.astropixelprocessor.com/har ... olonnello/.

The camera used for capture was a QSI 683ws (KAF 8300 sensor). 20 darks, 20 bias and 10 flats were used with each filter. APP performed flawlessly handling this data.

Alnitak is troublesome with these exposure lengths and currently beyond my processing capabilities but I am satisfied with the range of colours and Ha detail.

Dave

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Re: Takahashi FSQ106ED and Bortle 2/3 skies

Post by oopfan » Mon Jul 27, 2020 10:37 pm

Great work Dave! You are the APP wizard.

Brian

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Re: Takahashi FSQ106ED and Bortle 2/3 skies

Post by turfpit » Mon Jul 27, 2020 11:06 pm

Not really Brian - I used all the default settings in APP.

Dave

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Re: Takahashi FSQ106ED and Bortle 2/3 skies

Post by oopfan » Mon Jul 27, 2020 11:58 pm

Fair enough but you knew what buttons to press in the proper order!

Brian

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Re: Takahashi FSQ106ED and Bortle 2/3 skies

Post by turfpit » Wed Jul 29, 2020 10:35 am

After some 'support & encouragement' from Brian I have settled on this one. This is the 9th version (9th attempt at processing the stacks) - better framed and finally managed to grasp removal of light gradients in APP. In the end, more was achieved with less processing. The final step was to denoise with Neat Image.

IC434-HaLRGB-resized.jpg
IC434-HaLRGB-resized.jpg (227.05 KiB) Viewed 42 times


Dave

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Re: Takahashi FSQ106ED and Bortle 2/3 skies

Post by oopfan » Wed Jul 29, 2020 5:20 pm

A really stunning image, Dave! I see that it is really racking up the views, likes, and comments at AstroBin.

Brian

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