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
Firstspanish light on a Orion wide field
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Firstspanish light on a Orion wide field

Acquisition details

Dates:
March 6, 2015
Frames:
52×5(4′ 20″)
Integration:
4′ 20″
Avg. Moon age:
15.42 days
Avg. Moon phase:
99.51%

Basic astrometry details

Astrometry.net job: 563910

RA center: 05h35m06s.5

DEC center: -03°4908

Orientation: -63.083 degrees

Field radius: 3.876 degrees

Resolution: 620x374

File size: 178.4 KB

Description

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) !

Comments

Revisions

  • Firstspanish light on a Orion wide field , 



    
        

            Ewam
    Original
  • Firstspanish light on a Orion wide field , 



    
        

            Ewam
    B
  • Final
    Firstspanish light on a Orion wide field , 



    
        

            Ewam
    C

Sky plot

Sky plot

Histogram

Firstspanish light on a Orion wide field , 



    
        

            Ewam