[AZ-Observing] Re: NGC206 Enhanced Hydrogen Comparison
- From: "Jimmy Ray" <jimmy_ray@xxxxxxx>
- To: <az-observing@xxxxxxxxxxxxx>
- Date: Tue, 12 Dec 2006 13:41:58 -0700
Never mind Brian, I cheated and ran to the back of the book....
"Chronology of Landmark Achievements"
Pg 271
1988 - Lockwood and Skiff
Measurements of Micro-brightness fluctuations in stars similar to our Sun..
(I won't spoil the story by quoting it all here. So for those of you who
want to know how the story ends, go buy the book.)
Jimmy Ray
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx]On Behalf Of Jimmy Ray
Sent: Tuesday, December 12, 2006 1:19 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: NGC206 Enhanced Hydrogen Comparison
Aw, there's probably one sitting in the "Clark's" eyepiece case right now.
Maybe they'll let you borrow it. BTW- Brian I'm reading (and about 3/4 of
the way through) "The Explorers of Mars Hill". Are you going to make a cameo
appearance some where in there before I reach the end???
Jimmy Ray
-----Original Message-----
From: az-observing-bounce@xxxxxxxxxxxxx
[mailto:az-observing-bounce@xxxxxxxxxxxxx]On Behalf Of Chris Schur
Sent: Tuesday, December 12, 2006 1:03 PM
To: az-observing@xxxxxxxxxxxxx
Subject: [AZ-Observing] Re: NGC206 Enhanced Hydrogen Comparison
Brian, to do that, I would need of course a red filter
that excludes hydrogen alpha. My current R filter
lets it all in. Custom Scientific makes such a
filter, they call a "continuum" filter. Alls it takes
is money... ;)
Chris
--- Brian Skiff <bas@xxxxxxxxxx> wrote:
> Have you tried getting a 'pure' H-alpha image?
> That is,
> make a composite that consists of the H-alpha image
> _minus_ the R image
> to take out the red continuum from stars.
>
> \Brian
> --
> See message header for info on list archives or
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> send personal replies to the author, not the list.
>
>
Take Care,
Chris
Astro: http://www.schursastrophotography.com
Robotics: http://www.schursastrophotography.com/roboticsmain.html
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