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PostPosted: Sat Apr 13, 2013 3:59 pm 
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Greg's "3" asterism in Leo by cybermystic, on Flickr

A few weeks ago I was scrolling through "the Sky 6" looking for interesting objects in Leo to image. As I was moving the stars across the monitor a strange asterism suddenly leaped out of the monitor - can't be - there's something that looks just like the number "3" in nice bright stars. I wonder if this asterism looks as good "in the flesh"? In case you haven't noticed, the weather has been rubbish for ages, so as I was impatient to know what the asterism looked like "for real" I downloaded the DSS data of the area. Yep - it really does look that good. So now it's a waiting game, waiting for some clear skies so I can get a chance of imaging the thing. Unbelievably there was a clear hour, between the clouds, last night. I have never moved so quickly to get the mini-WASP array up and running and managed to get half an hour's worth of data. O.K. so it's not deep enough to see the faint background galaxies, and there's not enough subs for a smooth background - but there's the "3" for all to see :D :D :D Not my best image, but at the moment it is my favourite.
Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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PostPosted: Mon Apr 15, 2013 7:48 pm 
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That looks pretty cool Greg!


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PostPosted: Tue Apr 16, 2013 10:26 am 
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Hi Greg,

Great find! I've added it to my "to do" list as it might be a good match for my new star colour workflow. 8)

Bob.

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Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, 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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PostPosted: Tue Apr 16, 2013 3:28 pm 
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Thanks guys :D I think your star colour technique should show a LOT more colour in the stars than I've managed Bob - look forward to seeing your version :D
Greg

P.S. Many congratulations on your first APOD too!! Now if you tread very carefully and don't p*ss off the two Yanks (like Noel & I have managed to do) you might even get a few more in :D :D :mrgreen:

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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PostPosted: Tue Apr 16, 2013 3:42 pm 
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Hi Greg,

Thanks for the kind words. And thanks for the heads up: with one notable and unfortunate exception ( :oops: ) I usually keep a lid on my emotions but I'll be especially on my guard there as I would like another APOD as and when I have something suitable to offer!

As for the asterism, maybe I'll get a chance to image it in the next week but after that the next few clear nights will be spent doing a fresh polar alignment and building a new Pointing File for my mount (enables accurate unguided tracking) as things may have drifted as bit over the last year.

Bob.

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Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, 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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PostPosted: Mon Apr 22, 2013 2:30 pm 
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Greg's "3" asterism - Noel Carboni process by cybermystic, on Flickr

Here's the Noel Carboni process, which as to be expected, is quite a bit better than mine :D
Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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PostPosted: Sat Apr 27, 2013 9:26 pm 
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That's cool 8) What a great `find`

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PostPosted: Mon Apr 29, 2013 10:51 am 
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Thank you :D If you have a planetarium program go to RA/DEC 2000:

RA 09h 37m 21.7s DEC+15deg 20min 43.49sec

Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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PostPosted: Tue Apr 30, 2013 1:25 pm 
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Hi Greg,

Clear skies last night and just enough time to capture 5 x 200 second subs in each of R, G and B, using the TEC 140 'scope plus the ML16803 camera. Here's the big picture (25% scale):

    Image

      Greg Parker's "3" Asterism

and here's a crop (50% scale)

    Image

      Greg Parker's "3" Asterism - Close up

I don't usually do star spikes but I decided to add them to this one as I think they help draw the eye towards the asterism. Processing followed the workflow outlined in this PixInsight thread but without using a "Repaired RGB". The star cores needed a little more manual cleanup than usual and, as always, colour balance is a challenge when there's so much there to start with. Unlike my recent rendition of the Soul Nebula, and my current project reworking my Heart Nebula data, I saw very few (bright) blue stars in this patch of sky.

As I mentioned before, a great find. If it isn't already in the books it deserves a place with your name attached. 8)

Bob.

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Olympus OM-D E-M1 + M.Zuiko Digital ED 12-40mm f/2.8, 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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PostPosted: Tue Apr 30, 2013 3:12 pm 
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Oooh!! Nicely caught Bob - good job. It will be an EPOD next month, so it should get some attention then.
Greg

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Nexstar 11 GPS, 2 x Sky 90, M25C, MaximDL, Photshop CS3, Noel Carboni's Photoshop actions, 7 foot Pulsar fibreglass dome, Canon 40D, 100mm macro lens, 28-200mm zoom lens, 17-55mm f#2.8 zoom lens, 100-400mm zoom lens, 1.4x converter, 2x converter.
http://www.newforestobservatory.com/
http://www.flickr.com/photos/12801949@N02/


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PostPosted: Wed May 01, 2013 9:32 pm 
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Bob, on yours (if I squint a bit) I can see a 2 at the bottom of the top image, below the `3` & if I squint a bit harder :mrgreen: I can see a butterfly above the `3` or maybe it's an angel! 8)

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Image btw,He who dies with the most toys, WINS!
Nikon D800E & D700 bodies + Nikon 200-400mm F4 VR1, 50mm F1.4G, 16-35mm f/4G VR, 105 F2.8 VR macro, 70-300mm lenses. A couple of filters, Giotto tripod & ballhead. Lowepro Slingshot 302 AW
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