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APOs, ACHROs & DSO Imaging...

Started by IGastaldo, 09/15/2004 05:16PM
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Posted 09/15/2004 05:16PM Opening Post
Ivan Gastaldo
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Join Date: Dec 2001

Location: Coconut Creek FL, US

Posts: 4423

OK, here we go... an easy one for the Astro-Imaging gurus...

We all know that Achromats introduce false color on very bright objects, but we also know that for most part DSOs should NOT be affected by this...

As far as Imaging goes, has anybody seen a difference between imaging DSOs with an ACHRO and an APO? is it really noticeable?


Thank you for your attention,


Ivan
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Ivan Gastaldo 8)
Coconut Creek, FL

Ivan's Observatory
Lat 26N 16' 48" Long 80W 10' 48"
[COLOR="Red"]Personal Website:[/COLOR] http://www.ivangastaldo.com

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Posted 09/15/2004 06:03PM #1
Larry Citro
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Location: Robesonia PA, US

Posts: 341

hi,

The answer is yes there is a difference. Because the red and blues do not come to focus at the same point you will get bloated stars an if you try rgb imaging you will blue halos.

An Achro will work for H-alpha narrow band imaging.

clear skies,

Larry Citro
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