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New CSOG edition: Hickson Compact Galaxy Groups

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#1 ClearSkies.eu

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Posted 28 February 2013 - 11:18 AM

A new Clear Skies Observing Guides edition: Hickson Compact Galaxy Groups !

As an introduction, for one week only, the Hickson guides are available for less than 50% of the normal price of 9.95 euros. As always, customers outside of the European Union are exempt from VAT. For them it means the price this week is 4.09 euros: That's (only!) approximately 5.40 US dollars, or just over a nickel for a Hickson group. This price will remain valid until Sunday March 10th. Take advantage of this introductory offer before the normal price of 9.95 euros takes effect!

Please feel free to download a few samples to view Hicksons and other CSOG editions.

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The CSOG Hickson guides differ slightly from other CSOG content, as explained below.

There is one assumption: A user owns a starchart, can plot a celestial coordinate on it and is able to point his or her scope to within one degree of that position, or uses a goto system. From there, the observing guide takes over.

Data for Hickson group members always contain a galaxy's common name, along with "special designations" (Arp, VV', Markarian) and synonyms (MCG - PGC - UGC - ESO). Data for all of the objects was crosschecked with NED.
Below the object data is a large image depicting all group members. The image scale is displayed at top left, with a minimum size of seven arcminutes (7') east to west.

The second page of every Hickson guide contains four images. These images are uncompressed and therefor "zoomable" when using a computer or tablet. The size of an image is noted in the upper left corner: 1.25 degree (75'), 1 degree (60'), half a degree (30') or a quarter of a degree (15'). When using a laptop or tablet when observing, the image that best matches the telescope's field of view can be used. No need to switch to another image, just use the one you started with to zoom in on the object's position.
When using the guides in print or on a non-zooming device such as some e-readers, the images can be used consecutively. DSS images beat any starchart.

As for most CSOG content, three types of tours for goto telescopes are included: Autostar Tours for Meade's scopes, NexTours for use with Celestron's NexRemote and EQTours for use with EQMOD. As always, an AstroPlanner planfile is part of the package.

Of course, one of the main CSOG features applies to the Hicksons, too: The option of mirrored images.
  • "True" (unmirrored: north up, east to the left)
  • Mirrored Horizontally (north up, west to the left)
  • Mirrored Vertically (south up, east to the left)
  • Mirrored Horizontally & Vertically (south up, west to the left)
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Counting the mirrored ones, there are now 200 CSOG editions. Read all about it on the website: www.clearskies.eu

Clear Skies!

#2 ClearSkies.eu

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Posted 08 March 2013 - 05:41 PM

Two days left!

#3 Bill Barlow

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Posted 08 March 2013 - 08:47 PM

I wanted to ask, is the Hickson guide a hard copy/ notebook type publication that you can take with you to your observing site or is the guide more for a computer or I-pad type device? I am looking for a printed guide like the Sky and Telescope's Pocket Sky Atlas. Thanks

Bill

#4 ClearSkies.eu

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Posted 09 March 2013 - 05:03 AM

CSOG is a digital publication, as explained on the Home & Guides pages of the website: http://www.clearskies.eu/guides - "The Size of CSOG". It's up to CSOG users to print their edition(s), or to use them on a (tablet) computer.
I recently posted a few images on the Twitter, Facebook and Google+ pages to illustrate how the guides can be used on an iPad when observing.

#5 ClearSkies.eu

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Posted 09 March 2013 - 11:07 AM

This shows how CSOG guides can be used on a tablet, an iPad in this image, at the telescope's eyepiece.

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Of course, the screen should be dimmed and a red screen overlay used to not affect night vision.
The arm that holds the iPad in place is a Twelve South Hoverbar attached to a Mitty Wedge.

I am expecting to add lots of pictures to the website after a week of observing in southern France in early April, including nighttime shots.

#6 ClearSkies.eu

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Posted 10 March 2013 - 03:51 AM

Final day of introductory offer!






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