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Saturday, May 26, 2012

Live observation of NGC6888 and NGC6992 SNR in Cygnus

Good evening,

I am now reporting live from my location, where my scope is currently up and running. The QHY8L one-shot-color astrocamera is now collecting photons from the supernova remnant in the Cygnus constellation. An IDAS-LPS-P2 filter is effectively blocking the light pollution from the nearby street lights. I am guiding with a Starlight-Lodestar camera and the PHDguiding software. The weather is very good tonight. The seeing of 4.99" is evident in the guiding graph window, there are no spikes in the guiding curve tonight. Here is a live view of my computer desktop where the telescope and the camera are controlled from:
Image 1: My computer desktop during imaging


The first photons of NGC6888 are now collected. I quickly calibrated this single exposure (900s exposure at f/5.4 and FL=730mm) to show you how this object it looks like. No photo processing is applied on this single image. Here is it:
Image 2: NGC6888 (unprocessed)

A stacked image of NGC6888 is shown below:
Image 3: NGC6888 (9x900s, processed)


Amendment 31.05.2012:
NGC6992, another supernova remnant in the Cygnus constellation, had been also captured at that night. In the meanwhile, the final NGC6992 image is processed and it is shown below:
Image 4: NGC6992


/px

Wednesday, May 23, 2012

Rediscover the blue sky! Visit Greece!

If you have never been in Greece before, it is probably now the right time to visit it.
The deep blue skies will fascinate you.

Greece offers you 300 sunny days and 300 starry nights per year. Make them yours!

At night you can rediscover our Milky Way, experiencing a seeing of 1,5 arcsec which is not unusual on mountain tops higher than 1500m and there are many of them around the country.

Mount Helmos in Peloponnes where the Aristarchos telescope is installed, Sxinakas in Crete, or Dyrfis in Euboea are just few examples for places having an exceptional seeing. Look at the light pollution map of Greece to find a proper place for your observation session.

You can enjoy the hospitality of the Greeks getting top service at unusual low prices in famous touristic regions.

Image: Venus Transit 2004
In Greece, you can observe the Venus Transit 2012 for a longer time than in central Europe.

Image: B111 in Scutum
At night, you can discover low attitude objects, being de facto invisible from locations in the north.  Have you ever observed NGC6193 and NGC6352 in the horizon?

Greece is probably one of the best value destinations in Europe this year, addressing all tourists and sky-gazers wanting a fascinating summer vacation.

More vacation photos at: http://dark.astrodigital.net/greece_2012 

Tuesday, May 22, 2012

NGC6791 - The old star cluster in Lyra


NGC6791 is one of the oldest and most metal-rich open clusters of our galaxy. It is located in the constellation of Lyra. Reference: en.wikipedia.org. This is an uncalibrated test exposure: 5x180s, f/5.3, FL=730mm, QHY8L, TOA130

Wednesday, May 16, 2012

The Pelican and the Golf Of Mexico nebulas

Image 1: The Pelican & the Golf Of Mexico

Both nebulas are part of larger nebula complex in the constellation of Cygnus. They are best observed during the summer of the north hemisphere.
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See also wikipedia.org

Thursday, May 03, 2012

Venus in May 2012


This is the planet Venus on May, 3rd 2012 as captured with an apochromatic telescope at 820mm focal length with a Nikon d3100 DSLR. The phase of Venus was 24.3%, its apparent size 39,8" in a distance of 64'000'000 km from the Earth.