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

["Arne Danielsen" <arnedani@online.no>]

Thanks Herm! The Vixen-GP mount is working quite good after I re-greased it.
Nevertheless, the total weight of the R200SS, camera and autoguider is really
pushing the capacity of the GP mount and I'm considering to upgrade to a beefier
mount!

I have a Lasermax TLC-202N, which I use for collimating the scope, but I haven't
checked the collimation since I set the scope up in my semi-permanent
"observatory" last autumn. The scope usually hold collimation quite well, but I
will definitely check it. Thanks for bringing this to my attention!!

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

----- Original Message -----
From: "Herm" <hermperez@worldnet.att.net>
To: <astro-photo@seds.org>
Sent: Saturday, April 20, 2002 11:59 PM
Subject: Re: [APML] 10x20 minutes of the Rosette Nebula from apartment balcony.


> 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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