We have a blue moon tonight, and we have a total lunar eclipse at the same time.
Taken at 9:26pm (GMT+8)
And another one at 9:34pm (GMT+8)
Cloud moving around, we hardly got some small gaps for imaging.
I only got a simple tripod:
It was really cold and windy, and the feeling was great. If I had more time, I will probably be using a tracking mount plus a higher power setup. And also my Canon 18x50 IS, too! Anyway, it's good enough to have some fun.
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.
Wednesday, January 31, 2018
Thursday, January 18, 2018
20180118 Sun, tweaking parameters of ASI 120mm
Seeing rather bad at 3/10, transparency very low with pollutant at 3/10.
Got some more time to tweak the settings of the ASI 120mm camera. I never really studied enough for this little camera, today I switched on the high speed mode, and adjusted Turbo USB to 100 and I finally got more than 30 fps! Silly me.
I should have adjusted the gain but I forgot what values did I set.
The first one was taken with my usual setting, at slower frame rate, taken at 0703 (UT).
After tweaking, taken at 0710 (UT) at more than 30 fps (around 32-34 fps), and gain lowered.
I found the contrast slightly better, less noise, etc. The higher frame rate should freeze the seeing better.
Sharpcap kept the record rather well, gain was reduced from 50 to 40... I believe it could be driven down a bit further.
Got some more time to tweak the settings of the ASI 120mm camera. I never really studied enough for this little camera, today I switched on the high speed mode, and adjusted Turbo USB to 100 and I finally got more than 30 fps! Silly me.
I should have adjusted the gain but I forgot what values did I set.
The first one was taken with my usual setting, at slower frame rate, taken at 0703 (UT).
After tweaking, taken at 0710 (UT) at more than 30 fps (around 32-34 fps), and gain lowered.
I found the contrast slightly better, less noise, etc. The higher frame rate should freeze the seeing better.
Sharpcap kept the record rather well, gain was reduced from 50 to 40... I believe it could be driven down a bit further.
Thursday, January 11, 2018
20180111 Sun
Day off today and the cold front is still passing, and it turns sunny today.
Poor seeing is expected and thus no fine detail could be resolved, taken at 0639 UT.
There are a few dim filaments around, with an interesting on on top right hand corner, which extends a bit into the dark space as a small hedgerow.
Too lazy to add false color to this relatively featureless one, just a record.
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