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Posts Made By: Tapio Lahtinen

March 21, 2005 09:19 AM Forum: Celestron

Celestron repair times

Posted By Tapio Lahtinen
I have now owned The Advanced Series C8-SGT scope for little over 1,5 years
It has been repaired twice. First it took 3 months (luckily it was summer time, when it's almost impossible to do any reasonable observing here in Finland) and now it's been almost 3 months again.
Is this normal or is it just that we live in 'peripheria' ?
It is very hard to tolerate these kind of repair times.

April 18, 2005 01:41 PM Forum: Celestron

Celestron - RIP

Posted By Tapio Lahtinen
What do you think ?
http://www.celestron.com/news/

May 8, 2003 01:52 AM Forum: CCD Imaging and Processing/Solar System

First Webcam attempt Jupiter Qs?

Posted By Tapio Lahtinen
Very nice first picture!

You could use a barlow to increase the image scale,
or you could move the webcam out from the eyepiece like I did.
Philips webcams particularly TouCam Pro and Vesta are good for astroimaging (if you can find them).

Registax is a good program and I use it regularly (it's help files might be useful reading).
I get much better results with it compared to K3CCDTools which I used before.
You could try K3CCDTools which might be easier to use.
Hint - use K3CCDTools's Planetary Wizard.

Some images (and maybe some hints as well) in my webpages:
http://members.surfeu.fi/tapiol/astro/

Greetings
Tapio

August 14, 2003 01:25 PM Forum: CCD Imaging and Processing/Solar System

New Mars with CP5000

Posted By Tapio Lahtinen
200 frames ?
Did you take them by hand or are you using some sort of remote control ?

Tapio

August 21, 2003 03:09 PM Forum: Equipment Talk

Celestron New Advanced Series CG-5--Improved?

Posted By Tapio Lahtinen
I have one of these mounts and must say that it feels very solid. The goto feature however is not so good - I had to open the box and attach few wires and still the motors sometimes fail to run.
And in my mind the motors are very noisy especially when slewing to object at full speed. Something has to be done or else we're going to lose our neigbours respect.
Is this noise normal ? What can be done ?

Tapio

January 7, 2004 01:02 PM Forum: CCD Imaging and Processing/Solar System

Nikon 990 noise issue?

Posted By Tapio Lahtinen
It looks normal noise to me, at least my Casio produces same amount of hot pixels with similar exposure time.
You can subtract this kind of 'dark image' from the original in Paintshop Pro, Photoshop or whatever graphics program you are using.
Newer digital cameras can do this process automatically.

April 28, 2004 12:54 PM Forum: CCD Imaging and Processing/Solar System

JUPITER PROCCESSING assistance

Posted By Tapio Lahtinen
Someone told me that more gain would help reducing the ringing effect.

Einari

May 11, 2004 07:26 PM Forum: CCD Imaging and Processing/Solar System

My best of 2004 Toucam

Posted By Tapio Lahtinen
Great photos!
Improvement too-
Thanks for this galleria.

Tapio

June 8, 2004 12:05 PM Forum: CCD Imaging and Processing/Solar System

tear drop effect?

Posted By Tapio Lahtinen
I didn't notice it either. Strange.
Even looked at several webcams and images.
Among the best were Swedish solar observatory images at:

http://vt-2004.solarphysics.kva.se/

Tapio

June 8, 2004 04:32 PM Forum: Solar System Observing

Hi-res H-Alpha of Venus transit

Posted By Tapio Lahtinen
Really good!

Tapio

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