Azimuth alignment was off so there was (a bit) of star trailing. The Deconvolve filter in FITSWork4 (an excellent free software) got rid of most of the trailing.
M27
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orly_andico
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M27
This is 4x 4 minutes through an IDAS LPS-V4 filter (and lots of clouds, ha ha..) from the balcony.
Azimuth alignment was off so there was (a bit) of star trailing. The Deconvolve filter in FITSWork4 (an excellent free software) got rid of most of the trailing.
Azimuth alignment was off so there was (a bit) of star trailing. The Deconvolve filter in FITSWork4 (an excellent free software) got rid of most of the trailing.
Re: M27
Good try in such challenging weather! Thanks for sharing.
http://www.astro.sg
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
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orly_andico
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- Joined: Sun Aug 09, 2009 11:14 pm
- Location: Braddell Heights
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Re: M27
Yes I had to mute the PC because the constant beeping from "star faded" was really getting on my nerves... hahaha.
Re: M27
LOL! They should change it to "the beeping star beeping faded!".orly_andico wrote:Yes I had to mute the PC because the constant beeping from "star faded" was really getting on my nerves... hahaha.
http://www.astro.sg
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
email: gary[at]astro.sg
twitter: @astrosg
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
-
orly_andico
- Posts: 1616
- Joined: Sun Aug 09, 2009 11:14 pm
- Location: Braddell Heights
- Contact:
Re: M27
Kelvin,
All I can say is: MaximDL anti-stiction checkbox for the win![[smilie=admire.gif]](./images/smilies/admire.gif "admire")
Unlike PhD, it can figure out what direction the DEC drift is going, and disable guide commands in that direction. The guiding behavior is also quite tunable.
I was using MaximDL for the above image but it turned out my polar alignment was several degrees off and Maxim couldn't compensate fast enough in DEC. Refined the alignment a bit later and I was able to get much better guiding graphs, too bad the clouds rolled in and I got nothing. But the stars were much rounder even though I was losing guider lock >50% of the time.
All I can say is: MaximDL anti-stiction checkbox for the win
Unlike PhD, it can figure out what direction the DEC drift is going, and disable guide commands in that direction. The guiding behavior is also quite tunable.
I was using MaximDL for the above image but it turned out my polar alignment was several degrees off and Maxim couldn't compensate fast enough in DEC. Refined the alignment a bit later and I was able to get much better guiding graphs, too bad the clouds rolled in and I got nothing. But the stars were much rounder even though I was losing guider lock >50% of the time.