Re: (IAAC) Markarian 205 - 8inch F/10

• To: Internet Amateur Astronomers Catalog - Discussion <netastrocatalog-announce@latrade.com>
• Subject: Re: (IAAC) Markarian 205 - 8inch F/10
• From: Lew Gramer <dedalus>
• Date: Mon, 08 Jun 98 14:33:35 -0400
• Cc: Lew Gramer (me) <dedalus>
• In-Reply-To: Your message of "Mon, 08 Jun 98 14:26:57 EDT." <9806081826.AA13292@trillian.dev.latrade.com>
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>In fact, generally the only NEGATIVE effect of using narrow-band
>filters (aside from false color distractions) is image darkening!

The only caveat to this would be a case where any object had a significantly bright emission feature which was excluded by a particular filter's bandpass. Are there any common examples of this folks know of - maybe certain types of emission features being darkened relative to the background by an H-beta, or by some of the "custom bandpass" filters? Just curious...

Lew

• Re: (IAAC) Markarian 205 - 8inch F/10
• From: Yann Pothier <ypothier@closun.snv.jussieu.fr>

• Re: (IAAC) Markarian 205 - 8inch F/10
• From: Lew Gramer <dedalus>

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