Re: [APML] 10x20 minutes of the Rosette Nebula from apartmentbalcony.

[Sean Walker <vze2c3z8@mail.verizon.net>]

Oops! sorry, thought that was a private message.

Sean Walker

> From: Sean Walker <vze2c3z8@mail.verizon.net>
> Reply-To: astro-photo@seds.org
> Date: Mon, 22 Apr 2002 11:13:31 -0500
> To: <astro-photo@seds.org>
> Subject: Re: [APML] 10x20 minutes of the Rosette Nebula from apartment
> balcony.
> 
> Sweet picture, Arne!
> BTW- my email address is going offline, but you can reach me at:
> swalker@skyandtelescope.com
> 
> Sean Walker
> 
>> From: "Arne Danielsen" <arnedani@online.no>
>> Reply-To: astro-photo@seds.org
>> Date: Fri, 19 Apr 2002 23:43:16 +0200
>> To: "APML" <astro-photo@seds.org>
>> Subject: [APML] 10x20 minutes of the Rosette Nebula from apartment balcony.
>> 
>> Dear friends,
>> 
>> After I took delivery of an SBIG STV autoguider late last year I've been very
>> eager to see what I could achieve from my apartment balcony using film
>> through
>> my Vixen R200SS (8" f/4). My first attempts where carried out in November
>> last
>> year, but it became obvious that my sky conditions didn't allow for very long
>> exposures at f/4!!
>> 
>> I then started thinking about getting a LPS filter, but unfortunately the
>> limited focus travel of my scope didn't allow for a filter holder. I had
>> almost
>> given up on the idea when I saw that Herm Perez had been able to use an IDAS
>> LPS
>> filter on his R200SS. I contacted Herm and asked how he had solved the
>> problem.
>> It turned out that the coma-corrector he was using had threading on both
>> sides
>> and that he was able to attach the filter using this threading. Unfortunately
>> my
>> coma-corrector where threaded on one side only (even though it's the same
>> type
>> of coma-corrector)!! Then Herm came up with the great idea of gluing a
>> standard
>> stepper ring to the coma-corrector, allowing me to use any filter with the
>> setup. Problem solved!
>> 
>> After some test images to identify the correct exposure length using Kodak
>> Elitechrome 200 with and IDAS LPS filter attached to my R200SS I decided to
>> try
>> the Rosette Nebula as my first real target. I made 10 images each with an
>> exposure of 20 minutes each. After averaging them together using RegiStar
>> 1.0.3
>> I sent them to Matt BenDaniel who helped me with the image processing. The
>> final
>> result can be viewed using this link:
>> 
>> http://home.online.no/~arnedani/astronomy/astrophoto/ngc/79-06to79-15.htm
>> 
>> I would like to take the opportunity to publicly express my thanks to both
>> Herm
>> and Matt for taking the time and being so helpful!!
>> 
>> Best regards,
>> Arne
>> --
>> Arne Danielsen
>> Langhussenter 15, 1405 Langhus, Norway
>> mailto:arne.danielsen@oslo.online.no
>> http://arnedani.home.online.no/
>> N59°45'14"  E10°50'38" A115m
>> 
>> 
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> 
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