Cold front coming, seeing exceptionally poor from 0-2/10 at best... cannot properly focus.
0604 (UT) with a reducer, some nice filaments around but cannot go any higher power.
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.
Tuesday, December 27, 2016
Monday, December 19, 2016
20161219 Sun
We finally have a small active region (AR2619) today!
Here is a 5x shot with a reducer (forgot to remove), note the dust on the CMOS, 0701 (UT):-
And now the full disc, 0655 (UT):-
Here is a 5x shot with a reducer (forgot to remove), note the dust on the CMOS, 0701 (UT):-
And now the full disc, 0655 (UT):-
Friday, December 16, 2016
Tuesday, December 13, 2016
Sun 20161212
Another imaging session, but the sun was not very active so I only took the following full disc shot with my Ranger + reducer lens.
Gain was set to zero this time, 1338 (GMT+8):-
Gain was set to zero this time, 1338 (GMT+8):-
Saturday, December 10, 2016
20161128 Sun
I don't know if this is the first time for me to use the ASI120mm, I had one before but sold shortly, this one was newly acquired.
First one taken with my Ranger with a reducer lens, 1245 (GMT+8):-
Second one with a 3x barlows, 2 frames mosaic... uneven illumination, long time no practice, taken at 1253 and 1255 (GMT+8).:-
After taking the images, I found that I didn't set the gain to zero and it was set at 50% which is very high. No wonder why the result image is rather noisy.
I found no more Newton's ring even at 3x?
First one taken with my Ranger with a reducer lens, 1245 (GMT+8):-
Second one with a 3x barlows, 2 frames mosaic... uneven illumination, long time no practice, taken at 1253 and 1255 (GMT+8).:-
After taking the images, I found that I didn't set the gain to zero and it was set at 50% which is very high. No wonder why the result image is rather noisy.
I found no more Newton's ring even at 3x?
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