Welcome to my astronomy blog, I dedicate myself to the simplest form of amateur astronomy which requires only portable equipment. I have two small refractors, two small binoculars, one small GOTO mount and another small equatorial mount, and a small H-alpha solar filter.
Originally from a city where the people were proud of their light pollution, that is Hong Kong where I loved. Relocated to the UK since 2021.
Saturday, July 22, 2006
20060722 Home@Walnut M4 again
Transparency is quite good again, so tried to capture M4 again with longer exposure at 18.1s each frame, low gain at 300 at first and then ~350.
Total 110 frames captured lasted for 33.12 minutes.
Redo using registax with its derotation function:-
Both the M4 and NGC 6144 is more resolved and well defined.
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