The Pleiades, aka The Seven Sisters

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The Pleiades, aka The Seven Sisters

Postby Bob Andersson » Wed Dec 10, 2014 12:18 pm

Hi folks,

The image below was synthesised using my own data supplemented by data from the Digitized Sky Survey. I've described the way the data were combined over at PAIG but for this forum maybe just the picture...

    Image

      The Pleiades, aka The Seven Sisters or M45

BTW, if you like what you see you can click on the image to download a larger version. Best viewed against a dark background!

With limited opportunities for observing at the moment I quite often play with DSS data but for this one it was nice to be able to use my own data to improve it. :)

Bob.
Sony RX1R II. Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, M.Zuiko Digital ED 40-150mm f/2.8 + 1.4x T/C, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8
M.Zuiko Digital ED 75mm 1:1.8, Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.
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Re: The Pleiades, aka The Seven Sisters

Postby popo » Wed Dec 10, 2014 10:22 pm

Having read the description on PAIG, if I may summarise, this is a semi-real semi-false colour comprised of blue, red, IR data? Sounds like a lot of processing done!

Semi-related: I actually had a go at imaging the other night, but it was just before full moon so a total wash out.
Canon DSLRs: 7D2, 7D1, 5D2, 1D, 600D, 450D full spectrum, 300D IR mod
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3rd party: Zeiss 2/50 makro, Samyang 8mm fisheye, Sigma 50/1.4A, 150 macro, 120-300 f/2.8 OS
Compacts: Sony HX9V, Fuji X100.
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Re: The Pleiades, aka The Seven Sisters

Postby Bob Andersson » Wed Dec 10, 2014 10:47 pm

Hi popo,

At least you got the 'scope out!

You are right about the mix of data so far as the nebulosity is concerned. The stars, however, were totally derived from my red, green and blue subs so, with the usual caveats, those colours are representative. While the reflection nebulosity might, for some, be on the blue side in places that is what came out of the mix of red and blue data together with a green channel synthesised from red and blue. I'm actually very pleased with the result simply because there is a good deal of variation in the colour of that nebulosity which helps illuminate (sorry, bad pun!) structure. Modesty aside, I also think it's rather pretty! :oops:

Oh, and you are right that there was a lot of processing. Nearly two weeks worth! :twisted: :shock:

Bob.
Sony RX1R II. Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, M.Zuiko Digital ED 40-150mm f/2.8 + 1.4x T/C, Lumix 7-14mm f/4, Leica DG Summilux 15mm f/1.7 ASPH, M.Zuiko Digital 45mm 1:1.8
M.Zuiko Digital ED 75mm 1:1.8, Leica D Vario-Elmar 14mm-150mm f/3.5 - f/5.6 ASPH.
OM-D E-M5, H-PS14042E, Gitzo GT1541T, Arca-Swiss Z1 DP ball-head.
Astrophotography: TEC 140 'scope, FLI ML16803 camera, ASA DDM60 Pro mount.
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Re: The Pleiades, aka The Seven Sisters

Postby warth man » Thu Dec 11, 2014 5:07 am

Impressive work Bob. I admire your patience and yes, it does look pretty.
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