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

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

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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