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Astrophotography and Sketching >> Astro Imaging/Sketching Contest

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Charlie HeinAdministrator

Reged: 11/02/03

Loc: 26.06.08N, +80.23.08W
Nov11 CN Imaging/Sketching Contest Poll!
      #4959350 - 12/10/11 07:33 AM

Welcome to the November 2011 Cloudy Nights Imaging/Sketching Contest poll!

Each month the best images selected from the individual Cloudy Nights Imaging and Sketching forums will be presented for the userbase to vote on. The winning entry will be posted on the front page of the CN website for all to admire! At the conclusion of the poll, the entry with the highest total will be the winner of the contest..

Please choose your favorite from the entries below. The poll will remain open through December 15th at midnight.

Here are the entries for November!

CCD Imaging & Processing's Finalist - SGT500:

Messier 33
Astrotech 8" RC
SBIG St-8300M
Astrodon LRGB

Solar System Imaging's Finalist - Mike Phillips:

Location: Swift Creek, NC USA

Time: November, 8, 2011 - 0254 UTC

Optics: Akule = Custom 356mm (14" Zambuto) f/4.5
5x TeleVue Powermate at f/26 / 9,315mm EFL,
Secondary Mirror Antares 3.5 1/30wave

Mount: Celestron CGE on JMI Wheely bars

Camera: Point Grey Research Flea3 - FL3-FW-03S1M

Filters: True Tek Supraslim Color Filter Wheel with
Astronomik RGB TYP II

Capture: Lenovo W500 (Aquila) using Anthony Wesley's
custom Coriander v2.0 - with Anthony Wesley's
focuser and CFW scripts

Processing: Ninox -> Registax -> AstraImage -> Iris -> Gimp

Sketching Forum's Finalist - maroubra_boy:

This October New Moon saw me attend for the first time the Ice In Space Astro Camp at Lostock, New South Wales, Australia. The forecast threatened thunderstorms, but as luck would have it, the clouds parted to give us a great view of the sky. Thunderstorms did happen, but we only saw the glow of the flash of lightening from a massive storm system that lay behind a ridge.

My first sketch of the night was of 47 Tuc (NGC 104). This massive globular cluster is considered to be the remnant core of a galaxy long ago swallowed up by our Milky Way. There are two other such galaxy core remnants, Omega Centauri & M2.

The view of 47 Tuc through my 17.5” is nothing but astounding. At 125X the whole FOV is filled with countless stars. Its core is very compact and extremely bright, and the reach of the remaining ball of stars is impossible to determine its limits. Transparency was a little lacking, but you take what you get sometimes.

For once I added a FOV ring around the subject. My customary ringless sketch lacked a little something with this one as the field doesn’t extend to the edge of the page, the excessive blank black caused a lack of context. The FOV ring this time I feel gives that context to the sketch with only a small amount of extraneous stars lying just outside the ring.

An interesting comparison is between 47 Tuc and Omega Centauri, the two largest globular clusters in the sky. Omega’s core is larger in apparent size, while 47’s is much more compact and intense. This makes for an easier pick-up of ‘fingerprint’ patterns within Omega, while these patterns are much more subtle and even fickle in 47 Tuc. Still, these differences make for their distinct & unique qualities.

This was a challenge to sketch faithfully. As most of the stars in this cluster are actually quite faint on their own, it became more of a matter of attempting to lay down an impression of the collective features. The patchy ‘mini clusters’ around the perimeter, the suggested arcs and lines, and the distinct three ‘dark’ spots on the core, one of which is more of a bar that lies above two of the spots.

I hope you enjoy this sketch.

Alex M.

Good Luck to all our finalists!
Which Image/Sketch is our Winner?
Users may choose only one (102 total votes)
CCD Imaging & Processing's Finalist - SGT500:
11 10%
Solar System Imaging's Finalist - Mike Phillips:
51 50%
Sketching Forum's Finalist - maroubra_boy:
40 39%

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Reged: 01/17/09

Loc: USA
Re: Nov11 CN Imaging/Sketching Contest Poll! new [Re: Charlie Hein]
      #4977525 - 12/21/11 10:31 AM

Mike Phillips

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