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

[Herm <hermperez@worldnet.att.net>]

Arne, if you can take 10 perfect shots then you have a reliable setup.. good
work!. BTW, you need to refine the collimation on your scope, thats why you are
getting that coma. I use a laser collimator every session, usually the secondary
needs a bit of tweaking.. never the primary. I modified my laser by reducing the
aperture to a pinprick, this makes the laser do much smaller.

"Arne Danielsen" <arnedani@online.no>  wrote:

>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

Herm
Astropics http://home.att.net/~hermperez

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