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Apr13 Beginner DSO Challenge Poll!

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Poll: Apr13 Beginner DSO Challenge Poll! (32 member(s) have cast votes)

Which Image is Our Winner?

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#1 Charlie Hein

Charlie Hein

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Posted 01 May 2013 - 12:44 PM

Who has brought us the best image of M13 with NGC6207 in the frame? Vote for your favorite from the following entries:


Posted Image
M13_58x120s_1hr56m_Integration_ISO1600 by AstroJeff, on Flickr

Here is my submission for this month:

Hanging out in space at a distance of 25,100 light years, this 24 million year old beauty is one of the most impressive globular clusters for the northern hemisphere. Containing over a million stars packed into a 145 light year sphere, the center of this glorious object is 500X more concentrated than its outer perimeters. And out of all of those stars there stands one stranger… Barnard Number 29. What is it? In a world where all the stars should be the same age, there is a spectral type B2 – a young, blue star. Where did it come from? Apparently on one of M13's journeys around our galaxy, it collected a field star, for radial velocity measurements have proved that it does belong to the globular cluster!

Object: M13 Keystone Cluster
Location: Enfield, NS Canada
Date: April 6 into the 7th, 2013
Camera: Canon XSi / 450D Gary Honis Full Spectrum modified
Coma Corrector: Baader MPCC
Telescope: Orion 8" F4 Astrograph
Mount: Celestron CGEM
Guiding: Celestron 80mm Guidescope with a Celestron Nexguider.
Subs: 120s x 58 Integration time of 1hr52m
Darks/Bias/Flats added
Processing: Pixinsight 1.8 RC5
Post-Processing: Pixinsight 1.8 RC5

Also, here is a link to the FULL resolution of the image, take note of the detail in NGC6207, there is also another galaxy to the north of NGC6207. This file is 4MB. I can count 17 galaxies in the background.



Posted Image

My submission and first DSO image :)

Orion SkyView 6" Deluxe newtonian modified for prime focus
CGEM mount unguided
Sony A57 DSLR unmodified

The exposure is a single frame, ISO 1600, 107 sec.
Processed with StarTools

I took this image while trying to figure out how to autoguide with the CGEM and an SSAG/ Orion ST80 combo. That effort was unsuccessful but I did manage to get this one frame with round stars before the sun came up.

A few nights later I finally figured out the basics of autoguiding but alas I did not use the camera during that session. I wanted to keep the session simple and keep my head in the autoguiding game and not be distracted with imaging. Things should get easier from here on. I think I am over the first big learning hump. :jump:


#2 Charlie Hein

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Posted 09 May 2013 - 09:24 AM

Congrats to Magellan, you're the April Beginner DSO Challenge Winner! Please let us know what the June subject will be as soon as you can.


#3 Magellan



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Posted 09 May 2013 - 02:30 PM

Sorry for taking so long. I am on business in london,uk. The 4 hr time difference is taking its toll.

Tyvm everyone

I pick M12 for june. I love colourful clusters.

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