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M78, LRGB

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#1 kathyastro

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Posted 22 February 2020 - 09:04 AM

It's been two months since I've been able to capture some photons. I've had weather-related hardware malfunctions, and just plain bad weather. If it's been clear, it's been too windy. Anyway, last night was clear and not windy, so I fired up the gear.

Orion 200mm f/4 Newtonian
Atik 383L+

16 @ 300s L, 1x1;
12 @ 120s R, 2x2;
11 @ 120s G, 2x2;
7 @ 120s B, 2x2
140 minutes total

 

LRGB_1-1000px.jpg


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#2 kathyastro

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Posted 22 February 2020 - 09:05 AM

There sure were a lot of satellites out there. Here are one geosynchronous one in a polar orbit that flared twice, and one geostationary one that was flashing every 1.5 seconds. There were a few more that looked pretty ordinary.

 

sat1.jpg

sat2.jpg

sat3.jpg


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#3 elmiko

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Posted 22 February 2020 - 09:15 AM

Excellent results Kathy! And even with the satellites photo bombs! Did you rely on Pixinsights' excellent rejection algorithm to remove them? I don't throw away subs that have satellite trails. Linear fit clipping does an excellent job.


Edited by elmiko, 22 February 2020 - 09:16 AM.

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#4 kathyastro

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Posted 22 February 2020 - 09:17 AM

Excellent results Kathy! And even with the satellites photo bombs! Did you rely on Pixinsights' excellent rejection algorithm to remove them? I don't throw away subs that have satellite trails. Linear fit clipping does an excellent job.

I used Windsorized Sigma Clipping.  These three frames all got used in the stack, with no sign of the satellites in the final image.


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#5 sunnyday

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Posted 22 February 2020 - 10:20 AM

really a beautiful result, these famous satellites and it will not improve.


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#6 DSOs4Me

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Posted 22 February 2020 - 10:23 AM

Nice Job!


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