[AZ-Observing] Re: IC 1805
- From: "Richard Harshaw" <rharshaw2@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Mon, 20 Oct 2008 06:44:16 -0700
Why don't you specify the location in terms of offsets from one of the
corners then? For example, if the image is 10 units wide and 7 tall, the
cluster is 4 above and 3 left of the lower right corner, etc?
Richard Harshaw
Cave Creek, AZ
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Spencer, Darrell
Sent: Monday, October 20, 2008 5:54 AM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: IC 1805
Uh, yes, but it still doesn't identify the very small, apparently more
distant cluster I referred to below.
Thanks Dick!
Darrell
________________________________
From: az-observing-bounce@xxxxxxxxxxxxx on behalf of Richard Harshaw
Sent: Sun 10/19/2008 5:50 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: IC 1805
Archinal's book on Open Clusters states that IC 1805 is properly the star
cluster, not the nebula. It is also known as Melotte 15. Luginbuhl and
Skiff concur in their "Observing Handbook." But Sky Catalogue 2000.0 Vol II
lists IC 1805 as both the cluster AND as a nebula. The original IC catalog
of 1895 shows it to be a Barnard discovery and lists it as "Cl, co, eL neby
extends f". The NGCIC.org web page lists it as a cluster with nebulosity
and gives the following aliases for the cluster: Cr 26, LBN 654, Lund 81,
Sh2-190, OCL-352. Does that help?
Richard Harshaw
Cave Creek, AZ
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx] On Behalf Of Spencer, Darrell
Sent: Sunday, October 19, 2008 5:27 PM
To: az-observing@xxxxxxxxxxxxx; az-observing@xxxxxxxxxxxxx
Cc: EVAC ONLINE
Subject: [AZ-Observing] Re: IC 1805
Wow! Incredible depth, Jon. Nice work. I see a number of clusters in the
field. For example, what's the catalog number of the dim, tight cluster just
to the right of the brightest portion of the nebula. This is just one of
those images that keeps the eye busy for while.
Thanks for sharing!
Darrell Spencer
________________________________
From: az-observing-bounce@xxxxxxxxxxxxx on behalf of Jon Christensen
Sent: Sun 10/19/2008 4:56 PM
To: az-observing@xxxxxxxxxxxxx
Cc: EVAC ONLINE
Subject: [AZ-Observing] IC 1805
Hi Everyone,
This is the photo I took while at Vekol the last weekend of September. This
object is also commonly referred to as the Heart Nebula. The photo shows an
area of the sky approximately 3 degrees wide.
http://www.christensenastroimages.com/nebula/ic1805.htm
Regards,
Jon Christensen
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