Re: [APML] Orion Short Tube 80

[Steve.Holak@bcitpa.com]

I have an OM-1; what would be the eqivelant quality lens for that body?  Or
are there lens-mounting adapters that are reasonably-priced?


Steve Holak
Senior Software Architect

Brokerage Concepts IS Dept.
610-491-4879

email:  steve.holak@bcitpa.com


                                                                                                                         
                    "Frank Barrett"                                                                                      
                    <frankb@celestialwo        To:     "Discussion of Film Astrophotography" <astro-photo@seds.org>      
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                    Sent by:                   Subject:     Re: [APML] Orion Short Tube 80                               
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                    10/22/2003 10:40 AM                                                                                  
                    Please respond to                                                                                    
                    Discussion of Film                                                                                   
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Herm,

Hmm, and interesting alternative I hadn't considered.  Thanks for the
links,
I'm tempted. <g>

Yes, I've seen some pretty impressive work done with these lenses by other
folks too, like John Gleason and Steve Mandel.   But for film I would also
need a Nikon body, how much would one of those set me back?

Frank
http://celestialwonders.com
----- Original Message -----
From: "Herm" <hermperez@worldnet.att.net>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Tuesday, October 21, 2003 2:11 PM
Subject: Re: [APML] Orion Short Tube 80


> Stay away from the STR 80 for photography (its great for visual, day or
> night)..
>
> I you will definitely get a flatter field, no vignetting, no blue flaring
> and pinpoint stars edge to edge with a Nikon 300mm EDIF (ED: ed glass,
IF:
> internal focus) telephoto lens. I have seen them in Ebay for around $150.
> Pretty fast at f4.5 too. There are several astrophotography web pages
that
> showcase this lens. These lenses outperform many telescopes doing
> photography, yet I don't see too many people using them.
>
>
http://cgi.aol.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2958144400&category=4

8556
>
> here is a 400mm EDIF f5.6 :
>
http://cgi.aol.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2958398556&category=3

343
>
>
> I beleive Dr. Gendler uses the f2.8 version of the 300mm for spectacular
> ccd photography.
>
>
> "Frank Barrett" <frankb@celestialwonders.com>  wrote:
>
> >Does anyone on the list use the Orion Short Tube 80 for AP?  Any
problems
with vignetting on a 35mm frame?  As an achromat would I need a minus
violet
filter for film?
> >
> >TIA,  Frank
>
> Herm
> Astropics http://home.att.net/~hermperez
>
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