Firstspanish light on a Orion wide field (Ewam)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: Great Nebula in Orion · Horsehead nebula · IC 423 · IC 426 · IC 431 · IC 432 · IC 434 · IC 435 · M 42 · M 43 · NGC 1973 · NGC 1975 · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1981 · NGC 1982 · NGC 1990 · NGC 1999 · NGC 2023 · NGC 2024 · Part of the constellation Orion (Ori) · The star 42Ori · The star 45Ori · The star Alnilam (εOri) · The star Alnitak (ζOri) · The star θ1Ori · The star θ2Ori · The star ιOri · The star σOri

Firstspanish light on a Orion wide field , Ewam

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Firstspanish light on a Orion wide field

I've been interested in wide field, and curious to test the 300mm under better skies. f2.8 seemed to produce a bit too "soft" images so I gave it a go at f4 (even though some claim f5.6 is the sweet spot on this Nikon tele-lens).

So, here is my first 27 subs from Valencia : thank to Moonrocks, I got a nice cup of tea, a warm welcome and a first - much appreciated - go at photoshop wizard editing.

Technical details :

VERSION A :

27x 4 sec subs ;

VERSION B : the same plus

15x 8 sec ... ;

10x 1.6 sec subs, all @ f4, iso 6400.

VERSION C : same as B, with slight crop and micro adjust on color balance.

As it took me a long time to figure this out, I thought I would share the information with the ones interested :

In terms of time spent on acquisition, when using 6400 iso, it saves you a lot of time ; the theory is right, it does take about 30 sec at iso 800 to get the same result you get in only 4 sec @ 6400 ! That's 8 time faster. And a massive 16 times faster compared to imaging at f5.6 / iso 800 - super fast thanks to this iso noise free baby Nik' (D750) !

Original
B
Final
C

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Status	Basic success
Started	...
Astrometry.net job	563910
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Firstspanish light on a Orion wide field

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Firstspanish light on a Orion wide field

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