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Narrowband

2018-05-19 Milky way around Deneb


rotatux

Just for compleness I wanted to test the kit zoom lens which came with my PEN body.
It turned out pretty well and it's wide open !
There's just a bit of purple aberration / coma but it's certainly not as dominant as aberrations of the Pany 25.
Will have to try it at another focal some other time (and maybe do flats).

The FoV is nice also, though quite not like ultra-wide.

Gear: Olympus E-PL6 with M.Zuiko 14-42mm/3.5-5.6 at 14mm/3.5, no filter on Celestron Nexstar SLT tracking alt-az
Capture: 9 lights x 60s x 1250 ISO, master dark
Site: deep country 26km from Limoges, France
Sky: good (not measured, usually SQM around 21.4)
Processing: Regim 3.4, Fotoxx 12.01+

Copyright

© Fabien COUTANT

From the album:

Alt-Az / NoEQ DSO challenge

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Photo Information

  • Taken with OLYMPUS IMAGING CORP. E-PL6
  • Focal Length 14 mm
  • Exposure Time 60/1
  • f Aperture f/3.5
  • ISO Speed 1250

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Thanks. When I'm there 3 or 4 times per year my house is actually already far from towns: nearest "big" town of ~600 people is at 6km, Limoges is really big but out of sight. The house is an old water mill burried deep down a valley, so I have to climb the hill up to the other side at 500m altitude to get an astronomic view. Clear Outside says my site is Bortle Class 3, which I believe is probably true given the rare SQM measurements I did.

 

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Here is a version with color recalibrated on a single reference star (I don't remember whether Vega, Deneb or Sadr)... I find it better but can't replace the previous version.

838057768_20180519milkyway.thumb.jpeg.5221c7892cf70b1fe699f50deb3e5bdf.jpeg

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