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Contains:  IC 435, NGC 2024, NGC 2023, Horsehead nebula, IC 434, The star Alnitak (ζOri)
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A winter classic, 


            Luigi Fontana
A winter classic

A winter classic

Technical card

Imaging telescope or lens:TecnoSky APO Triplet 130/900

Imaging camera:Canon EOS 450D Baader mod

Mount:10Micron GM2000 QCI

Guiding telescope or lens:Vixen 60/700

Guiding camera:Lodestar


Resolution: 1428x2145

Dates:Oct. 29, 2016

Frames: 24x600" ISO800

Integration: 4.0 hours

Darks: ~7

Flats: ~15

Flat darks: ~15

Bias: ~15

Avg. Moon age: 28.43 days

Avg. Moon phase: 1.36%

Bortle Dark-Sky Scale: 3.00

Mean SQM: 21.10

Temperature: 7.00 job: 1498592

RA center: 85.306 degrees

DEC center: -2.237 degrees

Pixel scale: 2.336 arcsec/pixel

Orientation: -176.112 degrees

Field radius: 0.836 degrees

Locations: Saint Barthelemy, Nus, AO, Italy


******** ENGLISH - 240 minutes exposure on the zeta Ori area.. APO 130 mm f/7, Canon 450 Baader. The three images are postprocessing of the same data. Bortle 3.

********* ITALIANO - 240 minuti di posa sulla zona di zeta Ori. APO 130 mm f/7, Canon 450 Baader. Le tre immagini sono elaborazioni diverse degli stessi dati. Bortle 3.



Luigi Fontana
License: Attribution-NonCommercial-ShareAlike Creative Commons


  • A winter classic, 


            Luigi Fontana
  • A winter classic, 


            Luigi Fontana
  • Final
    A winter classic, 


            Luigi Fontana


A different post-processing. I'm still not satisfied :-/


A third - and final, I suppose - version, by Edoardo Radice with PixInsight. To date, I think this is the most spectacular image I ever shot. I had to use PhotoShop to "clone" a small circular dark area, that is not real, but a flat problem.********* Terza (e spero ultima) versione, del "solito"Edoardo Radice con PixInsight. Ad oggi penso sia la mia immagine più spettacolare in assoluto. Ho dovuto "riparare" con Photoshop una piccola zona circolare scura che non è reale, ma è un difetto del flat.

Sky plot

Sky plot


A winter classic, 


            Luigi Fontana